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>> RHED Shi: Merħba għall-
tara seminar CS50 -

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Introduzzjoni għall IOS.

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Nirringrazzjakom ilkoll għall ġejjin.

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Nispera int biss bħala eċċitati
kif I am madwar IOS.

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Sena li għaddiet, I ħa CS50 bħala sophomore,
u I bażikament tgħallimt IOS għall tiegħi

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proġett finali.

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U kien pretty -

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ukoll, ma kienx faċli, iżda hemm
lottijiet ta 'appoġġ tutorials online.

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And I really hope li ma 'dan
seminar, I ser jagħtuk guys ras

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tibda fuq l-iżvilupp IOS

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>> Għalhekk, f'termini ta 'żvilupp IOS,
hemm żewġ affarijiet ewlenin li għandna

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trid tkopri llum.

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L-ewwel, il-lingwa -

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il-lingwa se tkun fil-
Għan-C. Aħna ser attwalment tisma

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xi ħaġa verament eċċitanti.

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Allura, inti tista 'tingħaqad mal-Apple kollu
komunità ta 'żviluppaturi u jibnu xi

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apps verament tal-biża.

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>> Ukoll, IOS 7 hija sabiħa, wieħed jittama,
li xi wħud minnkom.

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Imma hija kontroversjali, I know.

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U prinċipalment, dak I trid tagħmel huwa gwida
inti permezz Għan-C, u wkoll

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Xcode, li hija l integrat
iżvilupp ambjent li inti ser ikunu

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taħdem għall-IOS.

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>> U għalhekk, biss kelma fuq Għan-C.
Bażikament, huwa l-istess eżatt bħal C,

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iżda ma 'ħafna affarijiet oħra.

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U għalhekk, aktar strett, huwa attwalment
super-sett ta 'C. Allura xi ħaġa li inti

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tista 'tagħmel C dritt issa, li hu
bażikament simili pset 0 sa 6, int

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tista 'tagħmel Għan-C.

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>> Allura, ma jħossux jibżgħu dwar dan ġdida
lingwa li int ser jitgħallmu.

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You ħadthom diġà koperti ħafna ta 'dan,
għaliex inti ħadthom kollha isir C f'dan passat

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semestru, ħlief issa int ser
li jkollhom ħafna aktar li jaħdmu magħhom.

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U jien biss se inti twassal permezz ta '
ftit eżempji li tenfasizza xi

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tad-differenzi ewlenin li sibt kienu
meta verament importanti tgħallimt

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Għan-C aħħar sena.

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>> Ukoll fil-fatt, hekk, il-punt ieħor
huwa, Għan-C huwa, ovvjament,

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oġġett orjentati lejn.

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U aħna ser jiddiskutu ftit
dwar dak li tfisser aktar tard.

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Bażikament, huwa simili kif inti ħadem ma '
structs f'dan pset passat, ma '

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nodes u oħrajn simili
affarijiet bħal dik.

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Ħlief, għall-Objettiv-C, kollox huwa
oġġett, u int se tkun

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tgħaddi madwar pointers għal oġġetti
aktar milli l-valuri nfushom.

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Għalhekk, huwa biss xi ħaġa importanti
li wieħed iżomm f'moħħu.

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>> Allura, għaliex ma we tibda bi ftit
differenzi fil-sintassi bejn C u

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Għan-C?

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I trid tenfasizza l-# jinkludu, inti
taf, io.h standard fis-C u C + +, bl-

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il-verżjoni Għan-C ta ​​'dak li
huwa # importazzjoni, u mbagħad xi tip ta '

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fajl tal-header.

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F'dan il-każ, ikun UIKit,
tafu, mmejla UIKit.h.

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Jista 'jkun ukoll, inti taf, MKMapview
lilek mmejla MKMapview.h jekk inti tixtieq

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li tagħmel, bħal, mappa ġewwa ta 'app tiegħek.

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Affarijiet simili bħal dik.

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>> Għalhekk, il-ħaġa importanti hija jinkludu
issa nbidlet għall-importazzjoni.

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Imma l-idea għadu.

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Int se jkunu qed jimportaw xi tip
tal-fajl header fil-programm tiegħek.

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>> Nixtieq ukoll li tenfasizza d-differenza
bejn printf u NSLog.

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Madankollu, kif għidna qabel, Għan-C
hija stretta super-sett ta '

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C, li jfisser li teżisti printf
fl Għan-C, wisq.

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Iżda, ħafna nies ma jużawx din.

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Ħafna nies jużaw dan NSLog għaliex
jagħtik ħin timbru, u Ser naraw

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li fl-azzjoni wara.

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Iżda, huwa ġeneralment aktar utli
mod li jistampa varjabbli.

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>> U Nixtieq ukoll li jiġi enfasizzat li
NSLog jieħu fil biss l-istess

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Valuri placeholder bħala printf ma -

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hekk% d hija għal int,
% F hija għal float.

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Madankollu, I do jridu jenfasizzaw
dan ħafna aħħar wieħed -

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NSLog% fuq sinjal -

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li huwa placeholder għal oġġett.

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U kif għidt qabel, jittratta Għan-C
pretty ħafna aktar fl-oġġetti,

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u għalhekk dan se jidħlu fl-użu meta inti
tixtieq li jistampa, forsi, forsi

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NSArray, jew NSDictionary,
jew NSString.

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>> Għalhekk, ukoll, avviż li, fil NSLog tagħna
dikjarazzjoni, għandna fuq sinjal quddiem

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tal-kwotazzjoni -

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li huwa li turi li kordi, issa,
fl Għan-C huma oġġetti.

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Huma ma jibqgħux istilel sempliċiment char.

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Huma qed oġġetti u huma
trattata bħala tali.

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>> Għalhekk, huwa verament importanti li meta
tuża NSLog li tieħu fi NS

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spag, li jfisser li inti ser ikollok
biex jinkludi fil quddiem tal tiegħek

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virgoletti.

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U hu għalhekk li inti tara, hawn, fil kollha ta '
funzjoni tiegħi sejħiet għal dan NSLog, I

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jkollhom fuq quddiem tal-kwotazzjonijiet, anke
għalkemm il-% d u l-% f huma

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kollha l-istess minn C.

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>> Kwalunkwe mistoqsijiet s'issa?

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I ser jippruvaw jgħaddu dan malajr sabiex
li jista 'jkollna aktar ħin biex jaħdmu

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ma Xcode u Għan-C, sabiex
li inti guys tista 'tikseb aktar

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familjari magħha.

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>> Next, I trid tenfasizza xi ħaġa
kunċettwalment importanti.

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Għalhekk, C, ħafna affarijiet huma funzjonijiet.

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Nagħmlu sejħa funzjoni.

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Aħna niddikjaraw funzjonijiet b'dan il-mod, mal-
ir-ritorn tip ewwel, allura l-

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Isem funzjoni, parentesi, u mbagħad
kwalunkwe argumenti u t-tip ta '

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dawn l-argumenti li rridu jgħaddu pulzieri

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U Għan-C, għaliex kollox
huwa oġġett jew klassi -

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hekk klassi u oġġett huma żewġ termini li
huma l-aktar sinonimu ma 'xulxin,

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so I jistgħu jużaw kelma flok
matul il-seminar.

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>> Iżda, tkun taf tara li għandna metodi
Għan-C minflok funzjonijiet.

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U metodi jappartjenu għal oġġetti.

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Hekk biss kif, forsi tieħu
per eżempju, node -

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tip tagħna [inaudible]

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node mill pset 6 jew 5 -

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aħna għandna l-kelma, il-proprjetà,
jew il-pointer node jmiss.

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Metodi huma sempliċiment funzjonijiet ġewwa
ta 'xi tip ta' struttura.

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>> Għalhekk, f'dan il-każ, l-istruttura tkun
l-oġġett, u mbagħad il-metodu huwa

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xi ħaġa li tappartjeni għal oġġett.

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U dan huwa kif inti tiddikjara,
tip ta ', metodu.

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Inti tibda bil, għal darb'oħra, ir-ritorn
tip - so, I ippruvaw kulur

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kodiċi l-kliem ewlieni hawnhekk sabiex inti guys
tista 'tara l-inqas, l-ifformattjar

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similaritajiet bejn il-funzjoni
dikjarazzjonijiet u dikjarazzjonijiet metodu.

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Allura, inti tibda, inti taf, ritorn
tip - f'dan il-każ, huwa firxa, jew

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pointer NSArray -

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u imbagħad inti għandek dan il-metodu.

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U mbagħad, x'hemm interessanti hawnhekk huwa
li minflok parentesi, aħna

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jkollhom dawn colons.

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U mbagħad, quddiem argumenti tagħna, aħna
tpoġġi, għal darb'oħra, fil-parentesi tat-tip

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argument tagħna.

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>> Allura, issa dritt jien tipprova tagħmel l-
paragun bejn, tafu, nu

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numru, għaliex qed
kemm ints simili.

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U mbagħad, l-ieħor
huwa tip NSUInteger.

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U mbagħad, bil Għan-C, meta inti
jridu li jkollhom argumenti multipli

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klawsola tiegħek metodu, inti, tip ta ',
jisseparahom tip ta 'bħal dan -

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Jien ma pjuttost ċert kif din tiġi deskritta,
iżda dan huwa eżempju tajjeb ta 'kif inti

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jista 'jkollhom argumenti multipli fil hemmhekk.

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>> Inti tista ', naturalment, biss totalment
jinjora l-kolon andArray NSArray

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array jekk int riedu biss metodu
li jieħu fil argument wieħed.

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Iva, kwistjoni.

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>> UDJENZA: huma kemm NSUInteger u
Argumenti NSArray li jistgħu jittieħdu fil-

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fil-NSArray?

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>> RHED Shi: Iva.

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Allura, let me jispjegaw.

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Allura, iva.

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Għalhekk, il-kwistjoni kienet huma NSUInteger u
NSArray * tipi ta 'l-argumenti,

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u li l-korretta.

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Allura, inti dejjem trid tispeċifika liema
it-tip ta 'argument tiegħek.

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U hawn, jien jippruvaw li jintroduċu inti
li xi wħud mill-sintassi u vocab ta '

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Għan-C, sabiex dawk tipi attwali
li inti ser tkun jittrattaw.

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>> U kif inti ser avviż, arrays
m'għadhomx, tip ta ',

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affarijiet sempliċi parentesi.

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Huma qed l-oġġetti.

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Għalkemm, jekk immorru għal dak li jmiss
slide, nistgħu naraw li nistgħu

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hard-kodiċi li NSArray fl Objettiv-C ma '
sempliċiment simbolu fuq quddiem

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il-parentesi.

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Jien ma, fil-fatt, pjuttost ċert jekk
I sintattikament hard-kodifikati firxa

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korrett għall-verżjoni C, iżda li
mistennija li jkunu fil-firxa C.

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>> Għalhekk, dan huwa kif inti, inti taf,
forsi jużaw il-funzjonijiet jew il-

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metodi li aħna maħluqa qabel.

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Dritt?

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Għalhekk, din hija fejn aħna niddikjaraw tagħna
funzjoni u l-metodu tagħna.

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U issa irridu li jużawhom
programm tagħna, u dan huwa

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kif aħna se tagħmel dan.

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Għalhekk, C, inti jkollok, inti taf,
forsi, bool b, u inti sett li

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daqs il-funzjoni, u mbagħad
inti tgħaddi fil-argumenti.

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>> Fil Għan-C, huwa pjuttost
ħafna l-istess ħaġa.

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Inti għandek NSArray * my_array, u huwa
ser ugwali - issa, l-uniku

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differenza hawnhekk hija din ħaġa oġġett,
li stajt enfasizzat bl-isfar, u

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kif tistgħu taraw, fil-C, hemm
ebda kelma isfar oħra.

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U huwa minħabba metodi jappartjenu
ma 'ċerti oġġett.

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Allura hu għalhekk li I jeħtieġ li jkollhom oġġett
li, tip ta ', jitlob dan il-metodu fuq

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in-numru żero, u mbagħad
l NSArray a, b, c, d.

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Kwalunkwe mistoqsijiet dwar dan?

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>> Ser naraw dawn il-kunċetti fl-azzjoni
pretty hekk meta aħna jmorru fi demo.

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OK.

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Issa, nixtieq li nitkellmu ftit fil-qosor
dwar Xcode 5, li hija l-

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ambjent żvilupp integrat
li inti ser tkun ħidma mal.

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Naf ħafna minnkom, jew xi wħud minnkom,
ma jkollhom MACs, li hija problema

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għaliex Xcode mhix disponibbli
għall-Windows u PC.

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M'għandekx jistaqsu lili għaliex, iżda probabbilment -

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yeah, korporattiva.

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Tkun xi tkun.

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Iżda xorta waħda, so, I ruhna jekk xi wħud
inti għandek tniżżel xi tip ta '

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00:09:39,360 --> 00:09:43,000
magna virtwali għall Mac fl
Sabiex jimxu Xcode 5.

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Iżda huwa nifty pretty
software għall-użu.

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>> U għalhekk, qabel we adsa fi kwalunkwe tip
tal demo, I biss trid nuruk

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00:09:51,280 --> 00:09:55,700
stampa ta 'dak Xcode Dehra tiegħek
tieqa, u allura wkoll jitkellmu dwar

173
00:09:55,700 --> 00:09:57,670
dak li dan l-ispazju kollu huwa.

174
00:09:57,670 --> 00:10:01,600
Għalhekk, huwa tip simili tagħlim kif
jużaw Microsoft Word, ħlief inti tixtieq li

175
00:10:01,600 --> 00:10:04,675
tikseb jiffamiljarizzaw ruħhom ma 'l-
affarijiet differenti li

176
00:10:04,675 --> 00:10:06,250
huma għaddejjin hawn.

177
00:10:06,250 --> 00:10:11,160
>> Allura l-ewwel, nixtieq li punt inti
il-toolbar fil-quċċata.

178
00:10:11,160 --> 00:10:14,450
Tkun taf tara li, fil-quċċata,
inti ser ikollok l-isem fajl -

179
00:10:14,450 --> 00:10:18,100
jew, fil-fatt, l-isem tal-proġett tiegħek
u mbagħad l-isem fajl tiegħek.

180
00:10:18,100 --> 00:10:20,940
Ħu nota tal-logħob u
il-buttuni ta 'waqfien.

181
00:10:20,940 --> 00:10:24,210
Dawk huma dawk li inti ser tkun
jużaw jiddekorri app tiegħek fuq il-

182
00:10:24,210 --> 00:10:25,600
simulatur -

183
00:10:25,600 --> 00:10:26,550
-simulatur IOS.

184
00:10:26,550 --> 00:10:29,940
Dan awtomatikament jiġi ma Xcode 5,
sabiex inti ma għandekx għalfejn tinkwieta dwar

185
00:10:29,940 --> 00:10:32,070
tniżżil xi tip ta 'simulatur.

186
00:10:32,070 --> 00:10:34,700
Inti biss għall-istampa play u
allura din tmur app tiegħek.

187
00:10:34,700 --> 00:10:39,230
U inti tista 'tilgħab madwar miegħek, u
tkun taf tara kif taħdem aktar tard.

188
00:10:39,230 --> 00:10:42,690
>> U mbagħad, fiċ-ċentru, naturalment, huwa
fejn kollha ta 'kodiċi beautiful tiegħek

189
00:10:42,690 --> 00:10:44,240
se jmorru.

190
00:10:44,240 --> 00:10:48,340
U mbagħad, fuq in-naħa tax-xellug, inti ser
jkollhom din, tip ta ', folder -

191
00:10:48,340 --> 00:10:50,340
navigazzjoni -

192
00:10:50,340 --> 00:10:53,970
u mbagħad, inti ser tara wkoll li, flimkien
mal-folder icon, hemm

193
00:10:53,970 --> 00:10:57,680
mazz ta 'ikoni oħra hemmhekk li
se jkun utli aktar tard.

194
00:10:57,680 --> 00:11:04,710
>> U mbagħad, fuq il-lemin huwa utilità
żona fejn inti tista 'taħdem ma

195
00:11:04,710 --> 00:11:09,620
xi wħud mill-oġġetti u tispeċifika, inti
jaf, dak li l-kulur għandu jkun, liema

196
00:11:09,620 --> 00:11:12,040
il-font test għandu jkun, eċċetera.

197
00:11:12,040 --> 00:11:15,890
Għalkemm, dak kollu li għandek tagħmel
fil-qasam utilità, inti tista '

198
00:11:15,890 --> 00:11:17,480
jagħmlu fil-kodiċi kif ukoll.

199
00:11:17,480 --> 00:11:21,630
U hekk, jien ser jkunu għaddejjin minn tnejn
eżempji ta 'użu, sempliċiment, l-ebda kodiċi fuq

200
00:11:21,630 --> 00:11:23,730
kollha - jew kodiċi minimu ħafna -

201
00:11:23,730 --> 00:11:28,290
versi kodiċi kollha, biss sabiex inti guys
taf x'tista 'u ma tistax tagħmel fil-

202
00:11:28,290 --> 00:11:29,260
Xcode u Għan-C.

203
00:11:29,260 --> 00:11:32,770
>> U mbagħad, finalment, stabbiliti fil-qiegħ,
inti għandek il-qasam debug.

204
00:11:32,770 --> 00:11:37,270
Għalhekk, m'għadx għandek jiddekorri GDB,
eċċetera, fuq programmi tiegħek.

205
00:11:37,270 --> 00:11:39,180
Awtomatikament ma għalik.

206
00:11:39,180 --> 00:11:42,880
U inti tista 'jistampa wkoll
Jittieħed f'dan il-qasam.

207
00:11:42,880 --> 00:11:46,790
Allura fil-fatt, aktar tard, aħna ser jgħaddu
mario.c, jekk inti guys għadhom jiftakru

208
00:11:46,790 --> 00:11:49,000
li, fil Xcode.

209
00:11:49,000 --> 00:11:50,360
Allura li għandhom ikunu gost.

210
00:11:50,360 --> 00:11:55,870
>> U mbagħad, biss biex iġibu lura
Għan-C, nixtieq li tenfasizza dak

211
00:11:55,870 --> 00:11:57,440
inti tista 'tagħmel ma jekk dikjarazzjonijiet.

212
00:11:57,440 --> 00:12:03,160
Allura, inti taf, għaliex Għan-C huwa
superset ta 'C, dak kollu li għandek tagħmel hu,

213
00:12:03,160 --> 00:12:06,890
litteralment, l-istess bħal C. Inti biss
jkollhom differenzi żgħar.

214
00:12:06,890 --> 00:12:10,810
Għalhekk, inti ser ikollok avviż-formola għal jekk
dikjarazzjoni għadu l-istess - għandek

215
00:12:10,810 --> 00:12:14,280
jekk, u imbagħad inti għandek parentesi ma
kundizzjoni ġewwa ta ', u mbagħad

216
00:12:14,280 --> 00:12:17,150
braces kaboċċi għall kulma
trid tagħmel ġewwa ta 'hemmhekk.

217
00:12:17,150 --> 00:12:21,680
>> Madankollu, jien ridt li tpoġġi din slide up
hawn, sempliċiment biex juru li,

218
00:12:21,680 --> 00:12:25,680
għaliex aħna qed jittrattaw ma 'oġġetti issa,
aħna se jkollhom jużaw dawn l-affarijiet

219
00:12:25,680 --> 00:12:31,240
imsejħa simili, hija ugwali għal string, li
huwa, inzerta, metodu ta '

220
00:12:31,240 --> 00:12:33,710
string jew oġġett NSString.

221
00:12:33,710 --> 00:12:38,600
Għalhekk, kelma, f'dan il-każ, huwa NSString
toġġezzjona, u għandu metodu msejjaħ hija

222
00:12:38,600 --> 00:12:44,150
ugwali għal string, u allura aħna qed tgħaddi
fil string hard-kodifikati biex tara

223
00:12:44,150 --> 00:12:48,110
jekk dawn huma ugwali
ma 'xulxin.

224
00:12:48,110 --> 00:12:51,580
>> Kwalunkwe mistoqsijiet s'issa?

225
00:12:51,580 --> 00:12:52,440
OK.

226
00:12:52,440 --> 00:12:56,190
U, nixtieq li jmorru fuq
a għal dikjarazzjoni wkoll.

227
00:12:56,190 --> 00:13:01,420
>> Għalhekk, per eżempju, jekk ridna li loop
fuq it-tul ta 'sekwenza fis-C, dan

228
00:13:01,420 --> 00:13:03,710
għandu jkun familjari għalik.

229
00:13:03,710 --> 00:13:07,840
U, Għan-C, I do jridu
biex jenfasizzaw din, tip ta ',

230
00:13:07,840 --> 00:13:09,235
metodu msejjaħ għadd.

231
00:13:09,235 --> 00:13:13,260

232
00:13:13,260 --> 00:13:15,550
Well, attwalment, let me
biss jieħdu dik lura.

233
00:13:15,550 --> 00:13:17,200
Għadd huwa metodu ta 'firxa.

234
00:13:17,200 --> 00:13:21,070
Madankollu, huwa aktar speċifikament
proprjetà ta 'firxa, li hija għaliex inti

235
00:13:21,070 --> 00:13:22,380
jistgħu jużaw l-dot notazzjoni.

236
00:13:22,380 --> 00:13:25,870
Imma jien ma rridu nġibu fis wisq ta '
dan il-għalf kunċettwali, I biss trid

237
00:13:25,870 --> 00:13:30,140
nuruk kif l-affarijiet se tfittex
bħal fil Għan-C versus C.

238
00:13:30,140 --> 00:13:35,400
>> U wkoll, I do jridu li jiġi rrilevat li
anki jekk I kont qed tuża NSUInteger

239
00:13:35,400 --> 00:13:39,860
quddiem kollha tiegħi i Objettiv-C,
tista 'wkoll tuża int, għaliex int huwa

240
00:13:39,860 --> 00:13:42,290
totalment validu Għan-C, ukoll.

241
00:13:42,290 --> 00:13:42,475
Iva?

242
00:13:42,475 --> 00:13:44,350
>> UDJENZA: Huwa biss
stilistika, jew -

243
00:13:44,350 --> 00:13:44,760
>> RHED Shi: Yeah.

244
00:13:44,760 --> 00:13:46,060
Allura, kif tkun taf tara -

245
00:13:46,060 --> 00:13:49,390
hekk, il-kwistjoni kienet hija li
biss kwistjoni stilistika.

246
00:13:49,390 --> 00:13:54,820
Kif tkun taf tara, I jkollhom, tip ta ', star
Ħaġa asterisk stabbiliti fil-qiegħ, u

247
00:13:54,820 --> 00:13:59,870
li link tieħdok għal munzell overflow
jiffurmaw, fejn xi ħadd jispjega

248
00:13:59,870 --> 00:14:03,640
id-differenza bejn int fil-
NSInteger u NSUInteger.

249
00:14:03,640 --> 00:14:05,540
U għalhekk, inti tista 'taqra dwar dan aktar tard.

250
00:14:05,540 --> 00:14:07,640
Dawn slides se jkunu, naturalment,
disponibbli lilek.

251
00:14:07,640 --> 00:14:10,300

252
00:14:10,300 --> 00:14:11,280
>> Ejja ara.

253
00:14:11,280 --> 00:14:12,150
OK, biża '.

254
00:14:12,150 --> 00:14:15,410
Għalhekk, din hija inkluża wkoll fil-slide
għaliex ħsibt li dan kien kbir

255
00:14:15,410 --> 00:14:19,370
websajt li tintroduċi inti
li sintassi Għan-C.

256
00:14:19,370 --> 00:14:24,410
Allura, fil-fatt, għaliex ma we jimxu lejn
Chrome u check out dan is-sit?

257
00:14:24,410 --> 00:14:30,650

258
00:14:30,650 --> 00:14:31,300
>> Dritt.

259
00:14:31,300 --> 00:14:36,670
Allura, dak li nixtieq nuruk
guys hawn hija din id-dehra.

260
00:14:36,670 --> 00:14:41,630
Għalhekk, dan huwa, tip ta ', se jkun dak
int ser tara ġewwa ta 'kull

261
00:14:41,630 --> 00:14:42,890
Fajl Xcode.

262
00:14:42,890 --> 00:14:47,400

263
00:14:47,400 --> 00:14:51,430
Attwalment, għaliex ma aħna biss jieħdu
mument biex, tip ta ', jieħdu din pulzieri

264
00:14:51,430 --> 00:14:53,470
>> Għalhekk, dan il-ktieb -

265
00:14:53,470 --> 00:14:55,880
dak l-oġġett li
aħna qed jittrattaw.

266
00:14:55,880 --> 00:14:59,680
U mbagħad, huwa ovvjament se jkun
ntirtu minn xi oġġett ieħor, iżda

267
00:14:59,680 --> 00:15:01,810
inti ma għandekx għalfejn tinkwieta dwar dan.

268
00:15:01,810 --> 00:15:04,430
U mbagħad, hija, forsi, għandha
xi varjabbli membri.

269
00:15:04,430 --> 00:15:09,160
>> Il-ħaġa importanti I nuruk
hija l-metodi eżempju, hawn.

270
00:15:09,160 --> 00:15:12,670
Għalhekk, metodi eżempju huma miktuba
minn dan is-sinjal minus.

271
00:15:12,670 --> 00:15:15,550
U mbagħad, kif inti ser ikollok avviż, aħna qed
diġà jibdew biex tara d-paradigma

272
00:15:15,550 --> 00:15:17,670
għal dikjarazzjoni metodu, id-dritt?

273
00:15:17,670 --> 00:15:22,670
It-tip ta 'ritorn, l-isem metodu, u
imbagħad it-tip ta 'l-argument, u

274
00:15:22,670 --> 00:15:24,660
allura l-isem tal-argument.

275
00:15:24,660 --> 00:15:29,090
U dan is-sinjal minus ifisser li huwa ta '
metodu eżempju, li jfisser li

276
00:15:29,090 --> 00:15:32,270
dawn il-metodi huma disponibbli biss għall-
oġġetti li ġew instantiated.

277
00:15:32,270 --> 00:15:35,050

278
00:15:35,050 --> 00:15:39,100
>> Kuntrast li, metodi bil plus
sinjal quddiem minnhom huma klassi

279
00:15:39,100 --> 00:15:43,640
metodi, li jfisser li inti tista 'sejħa
dawn il-metodi, anki jekk inti ma għandekx

280
00:15:43,640 --> 00:15:45,970
oġġett maħluqa s'issa.

281
00:15:45,970 --> 00:15:51,600
Għalhekk, per eżempju ċar,
NSString huwa klassi.

282
00:15:51,600 --> 00:15:55,850
U inti tista 'sejħa, per eżempju,
metodi klassi fuq NSString -

283
00:15:55,850 --> 00:15:58,660
l-attwali, bħal, kelma NSString.

284
00:15:58,660 --> 00:16:02,050
>> Madankollu, sabiex jużaw dawn
metodi, inti fil-fatt

285
00:16:02,050 --> 00:16:03,460
bżonn li jinħoloq string.

286
00:16:03,460 --> 00:16:08,980
Per eżempju, NSString string star ugwali
fil-marka kwotazzjoni, bonjour dinja.

287
00:16:08,980 --> 00:16:10,910
U mbagħad, inti tista 'tuża dawn il-metodi -

288
00:16:10,910 --> 00:16:11,990
pereżempju metodi -

289
00:16:11,990 --> 00:16:14,790
fuq dak string dinja bonjour.

290
00:16:14,790 --> 00:16:17,825
Allura, dak l-differenza bejn
metodi istanza u metodi klassi.

291
00:16:17,825 --> 00:16:20,390

292
00:16:20,390 --> 00:16:21,930
>> U, aħna biss koperti f'din il-parti.

293
00:16:21,930 --> 00:16:25,300

294
00:16:25,300 --> 00:16:33,750
Proprjetajiet huma ħaġa oħra li huma
ġewwa ta 'oġġetti, bażikament.

295
00:16:33,750 --> 00:16:37,530
U inti tiddikjara bl
il fuq keyword proprjetà.

296
00:16:37,530 --> 00:16:39,940
Inti għandek dawn l-għażliet, hawn,
li jien ser jispjegaw aktar tard meta

297
00:16:39,940 --> 00:16:43,110
immorru ġo demo.

298
00:16:43,110 --> 00:16:43,660
Iva?

299
00:16:43,660 --> 00:16:43,950
Hi.

300
00:16:43,950 --> 00:16:45,440
>> UDJENZA: Tista zoom fi, jekk jogħġbok?

301
00:16:45,440 --> 00:16:46,130
>> RHED Shi: Oh yes.

302
00:16:46,130 --> 00:16:46,560
Jiddispjacini.

303
00:16:46,560 --> 00:16:49,140
>> UDJENZA: Grazzi.

304
00:16:49,140 --> 00:16:50,005
>> RHED Shi: Li għandhom ikunu ħafna aħjar.

305
00:16:50,005 --> 00:16:51,240
>> UDJENZA: Yeah.

306
00:16:51,240 --> 00:16:53,940
Grazzi.

307
00:16:53,940 --> 00:16:56,815
>> RHED Shi: Yeah, jekk jogħġbok ifakkru lili jekk
I tinsa li zoom jew zoom out.

308
00:16:56,815 --> 00:17:00,590

309
00:17:00,590 --> 00:17:03,570
Għalhekk, din hija kollha jien ridt
biex turi li inti għall -

310
00:17:03,570 --> 00:17:05,970
Whoa, li l-lott -

311
00:17:05,970 --> 00:17:06,790
għal din il-websajt.

312
00:17:06,790 --> 00:17:12,210
Allura, ejja mur lura għall-pjastri tagħna.

313
00:17:12,210 --> 00:17:17,819
>> Attwalment, issa ejja tieħu mument
adsa fis demo.

314
00:17:17,819 --> 00:17:25,490
Allura, aħna ser tibda bil-
proġett ġdid Xcode.

315
00:17:25,490 --> 00:17:33,040
Għalhekk, jekk inti ser tiftaħ Xcode fuq kollha ta '
magni tiegħek, hija għandha tieħu inti ftit

316
00:17:33,040 --> 00:17:36,720
paġna fejn jgħid, bħal, jew miftuħa
up proġett eżistenti jew ġdida

317
00:17:36,720 --> 00:17:39,230
proġett, u għandek
ikklikkja proġett ġdid.

318
00:17:39,230 --> 00:17:41,477
U allura, għandha tieħu
inti dan l-iskrin.

319
00:17:41,477 --> 00:17:41,593
Iva?

320
00:17:41,593 --> 00:17:44,279
>> UDJENZA: Jekk aħna ma jkollhom Mac,
nistgħu biss tip ta 'chill?

321
00:17:44,279 --> 00:17:46,870
>> RHED Shi: Or ħarsa fuq
ma 'xi ħadd, yeah.

322
00:17:46,870 --> 00:17:47,740
Yeah.

323
00:17:47,740 --> 00:17:50,660
Tista 'chill, wisq.

324
00:17:50,660 --> 00:17:51,570
OK.

325
00:17:51,570 --> 00:17:55,410
>> Allura, dak li aħna qed tmur biex tagħmel l-ewwel, issa,
huwa, fil-fatt, aħna qed tmur biex tagħmel

326
00:17:55,410 --> 00:17:56,600
applikazzjoni fehma waħda.

327
00:17:56,600 --> 00:18:01,340
Għalhekk, jekk inti taf Avviż, x'hemm kbir
dwar Xcode u appoġġ Apple għall-

328
00:18:01,340 --> 00:18:05,690
iżviluppaturi huwa li inti għandek ħafna ta '
templates li jaħdmu magħhom diġà.

329
00:18:05,690 --> 00:18:09,210
Inti tista ', per eżempju, jagħmel
master-dettall applikazzjoni.

330
00:18:09,210 --> 00:18:10,920
Inti tista 'tagħmel logħba -

331
00:18:10,920 --> 00:18:13,860
u fil-fatt, I mhux se tidħol fis-logħob,
għaliex logħob huma storja differenti

332
00:18:13,860 --> 00:18:15,320
għall-iżvilupp IOS.

333
00:18:15,320 --> 00:18:18,930
U dawn qed tip ta 'separati,
so I mhux se tidħol fis dan.

334
00:18:18,930 --> 00:18:22,580
>> Imbagħad, inti għandek bbażati fuq paġna
applikazzjonijiet.

335
00:18:22,580 --> 00:18:24,010
Għandek applikazzjoni tab -

336
00:18:24,010 --> 00:18:29,350
hekk tixtieq, per eżempju, Bank of America
probabbilment ikun, bħal, app tabbed.

337
00:18:29,350 --> 00:18:32,140
Huwa dawk fejn inti għandek
il-buttuni fil-qiegħ.

338
00:18:32,140 --> 00:18:34,750
U mbagħad, inti għandek logħba Kit Sprite.

339
00:18:34,750 --> 00:18:38,670
>> Jew inti tista 'taħdem mill-bidu, li
huwa dak li aħna ser nagħmlu aktar tard.

340
00:18:38,670 --> 00:18:42,470
Imma ejja, minn naħa, tibda bil
applikazzjoni fehma waħda.

341
00:18:42,470 --> 00:18:48,590
Imbagħad, dan ser jitlob għal isem tal-prodott,
u nistgħu biss tagħmel test.

342
00:18:48,590 --> 00:18:50,190
Isem l-organizzazzjoni -

343
00:18:50,190 --> 00:18:54,140
hekk, l-isem l-organizzazzjoni,
identifikatur kumpanija -

344
00:18:54,140 --> 00:18:58,100
dawn huma importanti jekk int ser
jitqiegħdu app tiegħek fuq il-maħżen app.

345
00:18:58,100 --> 00:19:01,110

346
00:19:01,110 --> 00:19:05,116
Għajr li, kodiċi tiegħek se
jimxu assolutament multa mingħajr dan.

347
00:19:05,116 --> 00:19:09,940
>> Dan se jkun importanti jekk inti
trid - hekk, per se, bħal, tpoġġi app tiegħek

348
00:19:09,940 --> 00:19:14,080
fuq il-mobile jew xi ħaġa tiegħek, u test
it out, inti taf, fil-ħajja reali -

349
00:19:14,080 --> 00:19:15,360
dan se jkun importanti.

350
00:19:15,360 --> 00:19:20,110
Dan x'aktarx li normalment ikunu assoċjati ma '
xi tip ta 'kont iżviluppatur

351
00:19:20,110 --> 00:19:20,970
ma 'Apple.

352
00:19:20,970 --> 00:19:24,740
>> U għalhekk, I know, probabbilment, ħafna minnkom
mhux se jkollhom xi kontijiet iżviluppatur.

353
00:19:24,740 --> 00:19:26,460
Naf li l-università għandha wieħed.

354
00:19:26,460 --> 00:19:27,630
Naħseb CS għandha wieħed.

355
00:19:27,630 --> 00:19:32,770
Iżda, inti tista 'email me u jien ser jippruvaw
figura li out għalik.

356
00:19:32,770 --> 00:19:38,210
Imma issa dritt, stajt biss jitqiegħed fil-
xi affarijiet placeholder hawn.

357
00:19:38,210 --> 00:19:41,250
>> U inti tista ', naturalment, hawnhekk, jagħżlu
jekk inti tixtieq li jkun biss

358
00:19:41,250 --> 00:19:44,410
iPhone, iPad, jew it-tnejn -

359
00:19:44,410 --> 00:19:46,630
applikazzjoni universali.

360
00:19:46,630 --> 00:19:56,170
Għalhekk, għal issa, ejja tagħmel universali, just
biex tara żewġ naħat tal-pjattaforma.

361
00:19:56,170 --> 00:19:57,120
>> Ejja ara.

362
00:19:57,120 --> 00:20:01,510
Allura, id-dritt issa, jien ser jiffrankaw
fil xi tip ta 'folder.

363
00:20:01,510 --> 00:20:04,500
Ma jimpurtax fejn - inti
tista 'dejjem jġorrhom aktar tard.

364
00:20:04,500 --> 00:20:09,380
U, issa, aħna miġjuba
għall-proġett Xcode tagħna.

365
00:20:09,380 --> 00:20:12,890
Jien ma joqogħdu jinkwetaw dwar dan kollu.

366
00:20:12,890 --> 00:20:17,510
Nissuġġerixxi ma jmissu xi wieħed
dan, sakemm inti taf eżattament liema

367
00:20:17,510 --> 00:20:18,260
li qed isir.

368
00:20:18,260 --> 00:20:21,750
Għalhekk, dan kollu, biss jinjora
għall-parti l-kbira.

369
00:20:21,750 --> 00:20:26,940
Ma jkollokx bżonn li tmiss, u jekk inti
do inti mess up xi affarijiet hawn, dan

370
00:20:26,940 --> 00:20:28,600
gets ftit delikata.

371
00:20:28,600 --> 00:20:32,480
>> Allura, għaliex ma we tħares lejn
il-fajls dwar il-

372
00:20:32,480 --> 00:20:34,700
naħa tax-xellug fil navigator tagħna.

373
00:20:34,700 --> 00:20:37,060
Hawnhekk, aħna għandna AppDelegate.h.

374
00:20:37,060 --> 00:20:43,430
Għandna AppDelegate.m Allura, kif tkun taf
avviż, għandna header files, li

375
00:20:43,430 --> 00:20:45,720
tintemm fl dot h, u għandna
implimentazzjoni -

376
00:20:45,720 --> 00:20:46,970
attwalment, let me zoom pulzieri

377
00:20:46,970 --> 00:20:56,270

378
00:20:56,270 --> 00:20:57,060
OK.

379
00:20:57,060 --> 00:20:59,940
Let me zoom pulzieri

380
00:20:59,940 --> 00:21:05,810
>> Dritt, hekk ikollok header files u
għandek fajls implimentazzjoni.

381
00:21:05,810 --> 00:21:07,060
Attwalment -

382
00:21:07,060 --> 00:21:08,680

383
00:21:08,680 --> 00:21:09,240
OK.

384
00:21:09,240 --> 00:21:11,800
Dan huwa ftit stramb,
imma għandhom miegħi.

385
00:21:11,800 --> 00:21:16,140
Imbagħad, għaliex aħna għażilt ħsieb wieħed
applikazzjoni, aħna qed tmur biex tkun

386
00:21:16,140 --> 00:21:17,340
jaħdmu ma storyboard.

387
00:21:17,340 --> 00:21:22,140
>> Għalhekk, storyboard hija xi ħaġa li Apple
għandha toħroġ bi biex verament tgħin

388
00:21:22,140 --> 00:21:26,550
iżviluppaturi prototip malajr
applikazzjonijiet tagħhom.

389
00:21:26,550 --> 00:21:29,410
Għalhekk, dan huwa fejn inti tista 'toħloq
app mingħajr kitba ta '

390
00:21:29,410 --> 00:21:31,710
linja waħda tal-kodiċi.

391
00:21:31,710 --> 00:21:35,390
Madankollu, fl-applikazzjoni tagħna fehma waħda,
aħna ma, naturalment, għandhom

392
00:21:35,390 --> 00:21:41,270
fajl għall-fehma tagħna, li
huwa kontrollur ħsieb.

393
00:21:41,270 --> 00:21:45,150
Allura, aħna għandna l-header u l-
fajl implimentazzjoni, here.

394
00:21:45,150 --> 00:21:52,350
>> U, jien ser zoom out issa għaliex
aħna ser bżonn biex taħdem fil-storyboard.

395
00:21:52,350 --> 00:21:55,190
Allura, hawn fehma tagħna.

396
00:21:55,190 --> 00:22:00,120
Jekk aħna, sempliċiment, imexxu l-app dritt issa,
hemm Ma tantx eċċitanti għaddej.

397
00:22:00,120 --> 00:22:03,270

398
00:22:03,270 --> 00:22:05,040
Allura, int ser tara dan screen abjad.

399
00:22:05,040 --> 00:22:06,110
OK?

400
00:22:06,110 --> 00:22:14,010
>> U, utilitajiet qasam tagħna, nistgħu żid
mazz ta 'affarijiet differenti biex dan.

401
00:22:14,010 --> 00:22:19,290
Allura, meta inti qed jittrattaw ma 'skrins
fil IOS, kontrolluri ħsieb huma l-

402
00:22:19,290 --> 00:22:23,150
oġġetti li jiġbru fihom,
tip ta ', l-opinjonijiet tiegħek.

403
00:22:23,150 --> 00:22:26,980
Allura, kontrollur ħsieb dejjem
tkun proprjetà msejħa ħsieb.

404
00:22:26,980 --> 00:22:29,610
U dik il-fehma, tipikament, fih,
inti taf, dak li

405
00:22:29,610 --> 00:22:30,810
trid tara fuq l-iskrin.

406
00:22:30,810 --> 00:22:39,210
>> Għalhekk, ukoll, ejja biss tibda billi,
forsi, forsi tikketta.

407
00:22:39,210 --> 00:22:41,450
Allura, ejja tpoġġi tikketta fuq hemmhekk -

408
00:22:41,450 --> 00:22:44,080
stick fil-nofs.

409
00:22:44,080 --> 00:22:49,560
Allura, issa li stajt għafast fuq it-tikketta, I
tista 'tmur fil-ispettur proprjetajiet

410
00:22:49,560 --> 00:22:51,510
u jibdew ibiddlu l-valur tagħha.

411
00:22:51,510 --> 00:22:55,040
Ejja sejħa hija CS50 Kuluri.

412
00:22:55,040 --> 00:22:58,220
>> U, I tista 'wkoll tbiddel il-font.

413
00:22:58,220 --> 00:23:02,630
Għalhekk, minflok sistema, tagħmel li hija
default, nistgħu nagħmlu waħda custom.

414
00:23:02,630 --> 00:23:03,770
Nistgħu bidla -

415
00:23:03,770 --> 00:23:06,453
tafu, ajruplani ultra-light, jagħmilha 32.

416
00:23:06,453 --> 00:23:09,000

417
00:23:09,000 --> 00:23:11,370
U allura, nistgħu nagħmlu kaxxa tagħna akbar.

418
00:23:11,370 --> 00:23:14,410
>> UDJENZA: Taħseb inti tista zoom
fil biss ftit aktar, forsi?

419
00:23:14,410 --> 00:23:14,810
>> RHED Shi: Yeah?

420
00:23:14,810 --> 00:23:16,196
OK.

421
00:23:16,196 --> 00:23:17,450
>> UDJENZA: Just vit dan?

422
00:23:17,450 --> 00:23:19,020
>> RHED Shi: Ejja naraw.

423
00:23:19,020 --> 00:23:20,382
Taħdem din?

424
00:23:20,382 --> 00:23:22,270
>> UDJENZA: Just jgħaddu l-Xcode?

425
00:23:22,270 --> 00:23:23,520
>> RHED Shi: Sure.

426
00:23:23,520 --> 00:23:25,620

427
00:23:25,620 --> 00:23:25,940
OK.

428
00:23:25,940 --> 00:23:26,275
Tal-biża '.

429
00:23:26,275 --> 00:23:27,072
>> UDJENZA: It-tikketta taħt?

430
00:23:27,072 --> 00:23:28,920
It-tikketta?

431
00:23:28,920 --> 00:23:29,480
>> RHED Shi: X'hemm li?

432
00:23:29,480 --> 00:23:32,050
>> UDJENZA: What drop-down
kien it-tikketta taħt?

433
00:23:32,050 --> 00:23:35,170
>> RHED Shi: Għalhekk, il-kwistjoni kienet, liema
drop-down kienet it-tikketta taħt?

434
00:23:35,170 --> 00:23:37,260
Għandu, sempliċiment, tkun taħt hawn.

435
00:23:37,260 --> 00:23:39,330
I raden hija ħaġa kubu.

436
00:23:39,330 --> 00:23:40,910
Iżda ġeneralment, dan huwa l-default -

437
00:23:40,910 --> 00:23:43,250
Jien biss se stabbiliti hawn
sakemm nsib tikketta.

438
00:23:43,250 --> 00:23:45,800

439
00:23:45,800 --> 00:23:47,730
Yeah.

440
00:23:47,730 --> 00:23:48,950
>> Allura issa, aħna għandna tikketta tagħna.

441
00:23:48,950 --> 00:23:51,040
Ejja IT ċentru.

442
00:23:51,040 --> 00:23:56,410
U Xcode jagħtina linji gwida
għall centering oġġetti.

443
00:23:56,410 --> 00:23:59,510

444
00:23:59,510 --> 00:24:01,480
Allura, issa ejja jimxu kodiċi tagħna għal darb'oħra.

445
00:24:01,480 --> 00:24:08,110

446
00:24:08,110 --> 00:24:08,800
>> Hemm immorru.

447
00:24:08,800 --> 00:24:10,310
Allura, aħna għandna CS50 Kuluri.

448
00:24:10,310 --> 00:24:13,720

449
00:24:13,720 --> 00:24:15,420
U issa, ejja tpoġġi buttuna
fuq hemmhekk, id-dritt?

450
00:24:15,420 --> 00:24:17,480
Għaliex aħna rridu li jagħmlu
dan interattiv.

451
00:24:17,480 --> 00:24:19,410
Allura, ejja tpoġġi buttuna hawn.

452
00:24:19,410 --> 00:24:39,020
U aħna ser sejħa din il-buttuna "vit hawn
biex tkompli. "Aħna ser IT ċentru, wkoll

453
00:24:39,020 --> 00:24:39,990
Attwalment, huwa diġà ċċentrat.

454
00:24:39,990 --> 00:24:40,630
Yeah.

455
00:24:40,630 --> 00:24:43,130
>> Allura, issa għandna buttuna.

456
00:24:43,130 --> 00:24:53,000
U jekk aħna run dan darb'oħra, aħna qed tmur
li jkollhom buttuna ftit sbieħ hawn.

457
00:24:53,000 --> 00:24:56,520
U nista 'ikklikkja, iżda ma tagħmel
xejn, għaliex aħna ma jsir

458
00:24:56,520 --> 00:24:58,500
xejn bil-buttuna għadu.

459
00:24:58,500 --> 00:25:01,740
>> Allura, ejja joħolqu ieħor għan, id-dritt?

460
00:25:01,740 --> 00:25:04,160
Allura, ejja ngħidu li nixtieq vit
li buttuna u nixtieq li

461
00:25:04,160 --> 00:25:05,730
jmorru għal paġna oħra -

462
00:25:05,730 --> 00:25:06,820
ieħor għan.

463
00:25:06,820 --> 00:25:14,440
Dak li jien ser tagħmel hu li, I tista 'toħloq
kontrollur ħsieb, right?

464
00:25:14,440 --> 00:25:19,690
Issa jien ser ikklikkja fuq buttuna tiegħi, u mbagħad,
l-importanti hu, jien ser

465
00:25:19,690 --> 00:25:20,910
click - jew -

466
00:25:20,910 --> 00:25:23,660
iva, kontroll istampa fuq it-tastiera tiegħi.

467
00:25:23,660 --> 00:25:24,880
Kontroll.

468
00:25:24,880 --> 00:25:27,005
Ikklikkja fuq il-buttuna, u mbagħad drag.

469
00:25:27,005 --> 00:25:29,960

470
00:25:29,960 --> 00:25:33,550
>> Allura, ftakar biex iżommu l-kontroll ewlieni.

471
00:25:33,550 --> 00:25:35,160
Ejja nagħmlu dan mill-ġdid.

472
00:25:35,160 --> 00:25:40,930
Allura, iżommu kontroll, ikklikkja, u drag
għal dak li inti trid tagħmel.

473
00:25:40,930 --> 00:25:41,520
OK.

474
00:25:41,520 --> 00:25:43,610
>> U issa, I għandek diversi għażliet hawn.

475
00:25:43,610 --> 00:25:47,900
I tista 'jew timbotta, jew I tista' tagħmel
modal, jew I tista 'tagħmel custom.

476
00:25:47,900 --> 00:25:50,900
Push huwa biss jekk għandek
kontrollur navigazzjoni.

477
00:25:50,900 --> 00:25:54,270
Dritt issa, ħafna ewwel ħsieb tagħna
kontrollur ma jkunx ġewwa ta 'kull

478
00:25:54,270 --> 00:25:55,610
kontrollur navigazzjoni.

479
00:25:55,610 --> 00:25:59,500
Għalhekk, il-kontrollur navigazzjoni hija dik
li jagħtik il-buttuna back fuq

480
00:25:59,500 --> 00:26:03,910
l-app IOS fejn inti għandek, inti taf,
li top, tip ta ', bar oħxon -

481
00:26:03,910 --> 00:26:06,480
fejn inti tista 'tmur lura, jew
quddiem, eċċetera.

482
00:26:06,480 --> 00:26:07,740
Dritt issa, I ma jkollhomx dan.

483
00:26:07,740 --> 00:26:11,050
U għalhekk, hu għalhekk li I ma tistax tagħmel push.

484
00:26:11,050 --> 00:26:12,480
>> So, I għafast fuq push
aċċidentalment, here.

485
00:26:12,480 --> 00:26:16,480
U fil-fatt, ejja jimxu l-kodiċi,
u għandu jikkraxxja fuq lili.

486
00:26:16,480 --> 00:26:19,770

487
00:26:19,770 --> 00:26:22,960
Biss jekk I agħfas il-buttuna
għalkemm, hekk -

488
00:26:22,960 --> 00:26:23,420
dritt.

489
00:26:23,420 --> 00:26:26,480
Għalhekk, dan huwa ħażin.

490
00:26:26,480 --> 00:26:31,330
>> U, kif tistgħu taraw, hawnhekk, aħna
jkollhom il-messaġġ ta 'żball.

491
00:26:31,330 --> 00:26:35,460
Allura, "segues Imbotta jista 'jintuża biss meta
kontrollur sors jitmexxa minn

492
00:26:35,460 --> 00:26:40,700
eżempju ta 'kontrollur navigazzjoni UI. "
Allura, għaliex dan ma kienx ġewwa ta '

493
00:26:40,700 --> 00:26:44,030
kontrollur navigazzjoni,
I ma setgħux jagħmlu dan.

494
00:26:44,030 --> 00:26:48,782
>> Allura, id-dritt issa, jien ser lura għall-
folder, li tmur lura għall-storyboard.

495
00:26:48,782 --> 00:26:51,680
>> UDJENZA: X'hemm-navigazzjoni
kontrollur, għal darb'oħra?

496
00:26:51,680 --> 00:26:55,260
>> RHED Shi: Allura, issa dritt jien ser nuruk.

497
00:26:55,260 --> 00:26:56,200
Ejja ara.

498
00:26:56,200 --> 00:27:00,510
Allura, jien ser ikklikkja fuq din il-fehma
kontrollur, u mbagħad jien se jmorru

499
00:27:00,510 --> 00:27:03,920
sa prodott -

500
00:27:03,920 --> 00:27:06,240
fil-fatt, no, sorry - editur.

501
00:27:06,240 --> 00:27:08,360
U jien se jmorru fil -

502
00:27:08,360 --> 00:27:09,350
attwalment, ma I ikklikkja fuqha?

503
00:27:09,350 --> 00:27:10,070
Nru.

504
00:27:10,070 --> 00:27:11,080
Hemm immorru.

505
00:27:11,080 --> 00:27:16,270
Jien se jmorru up fis editur, jinżlu
ssodata fi, u mbagħad navigazzjoni

506
00:27:16,270 --> 00:27:17,520
kontrollur.

507
00:27:17,520 --> 00:27:20,130

508
00:27:20,130 --> 00:27:20,720
>> OK.

509
00:27:20,720 --> 00:27:27,750
U, workspace tiegħi jistenna verament messy,
hekk ejja tnaddaf dan up.

510
00:27:27,750 --> 00:27:29,000
Għalhekk, dan kollu huwa storyboard.

511
00:27:29,000 --> 00:27:32,510

512
00:27:32,510 --> 00:27:33,760
U b'dan il-mod -

513
00:27:33,760 --> 00:27:37,030

514
00:27:37,030 --> 00:27:38,280
OK, stop -

515
00:27:38,280 --> 00:27:49,320

516
00:27:49,320 --> 00:27:50,860
I jistgħu malajr jibnu xi ħaġa
bħal dan.

517
00:27:50,860 --> 00:27:53,020
U mbagħad, issa I tista 'tmur lura, inti taf?

518
00:27:53,020 --> 00:27:55,730
>> Iżda din hija tip ta 'boring, right?

519
00:27:55,730 --> 00:28:03,020
Allura, dak li nixtieq tagħmel hu, ma rridx
tagħmel, biss sempliċement, ħsieb

520
00:28:03,020 --> 00:28:03,870
kontrollur.

521
00:28:03,870 --> 00:28:07,720
Ejja ngħidu jien ridt li attwalment jagħmel
kontrollur fehma tabella, so I tista 'tpoġġi fil-

522
00:28:07,720 --> 00:28:12,110
xi kuluri sbieħ, fit-tabella.

523
00:28:12,110 --> 00:28:16,210
>> Allura, issa li stajt jitqiegħdu fil-fehma mejda tiegħi
kontrollur, I bżonn jgħaqqdu lura

524
00:28:16,210 --> 00:28:18,560
minn din il-buttuna għall-
kontrollur fehma.

525
00:28:18,560 --> 00:28:21,780
So I bżonn tagħmel kontroll tiegħi,
click, ħaġa drag darb'oħra.

526
00:28:21,780 --> 00:28:27,318
U issa I jistgħu jagħmlu push, minħabba I ssodata
ġewwa ta 'kontrollur navigazzjoni.

527
00:28:27,318 --> 00:28:32,210
>> UDJENZA: Navigazzjoni kontrollur biss
jippermettilek li jmorru minn post għall-post?

528
00:28:32,210 --> 00:28:33,540
>> RHED Shi: Iva.

529
00:28:33,540 --> 00:28:38,670
Allura, aktar teknikament, huwa
oġġett fejn -

530
00:28:38,670 --> 00:28:43,150
hekk, ġewwa tal-navigazzjoni
kontrollur oġġett, huwa

531
00:28:43,150 --> 00:28:44,780
jżomm track tal-firxa.

532
00:28:44,780 --> 00:28:48,300
U li array jkollha l-sussegwenti
ħsieb kontrolluri.

533
00:28:48,300 --> 00:28:51,560
C'est pourquoi meta tagħfas lura, huwa
tmur lura għall-paġna preċedenti.

534
00:28:51,560 --> 00:28:55,260
Minħabba li l-kontrollur navigazzjoni
oġġett, jew il-kodiċi li jieħu ħsieb ta '

535
00:28:55,260 --> 00:28:58,890
dan l-oġġett, għandha firxa li jżomm
track ta 'dawn il-kontrolluri View, u

536
00:28:58,890 --> 00:29:01,870
jista 'mbagħad, inti taf, DQ l-opinjoni
kontrollur u jagħtuk lura l-

537
00:29:01,870 --> 00:29:02,750
qabilha.

538
00:29:02,750 --> 00:29:05,200
>> Għalhekk, dan huwa għalf tekniċi, iżda -

539
00:29:05,200 --> 00:29:07,505
u jien ser nuruk aktar tard fil-
kodiċi, jekk ikollna ħin.

540
00:29:07,505 --> 00:29:10,270
Jien tip ta 'tmexxija fil-ħin, iżda -

541
00:29:10,270 --> 00:29:15,610
>> Allura, ma 'l-opinjoni tal-mejda,
dak li nistgħu nagħmlu hu -

542
00:29:15,610 --> 00:29:18,440
Huwa normalment stabbiliti awtomatikament
għal Dynamic Prototype -

543
00:29:18,440 --> 00:29:20,640
aħna qed tmur biex jagħmilha Ċelloli statiċi,
inkella aħna qed tmur biex

544
00:29:20,640 --> 00:29:22,920
run fis xi problemi.

545
00:29:22,920 --> 00:29:28,470
>> U mbagħad, ejja ngħidu jien ser
li jkollhom sezzjoni waħda.

546
00:29:28,470 --> 00:29:31,000
Għalhekk, it-taqsimiet huwa simili -

547
00:29:31,000 --> 00:29:35,160
jekk inti stajt qatt dehru l-app mużika, meta
għandek artisti, sezzjonijiet kieku

548
00:29:35,160 --> 00:29:37,830
tkun il-li A permezz Z's -

549
00:29:37,830 --> 00:29:38,780
l-ittri -

550
00:29:38,780 --> 00:29:42,600
u mbagħad, inti taf, l-individwu
ringieli tkun l-ismijiet artist.

551
00:29:42,600 --> 00:29:47,460
U għalhekk, x'hemm jibred hawnhekk, huwa li nista '
aċċess għas kollha l-oġġetti ġewwa

552
00:29:47,460 --> 00:29:50,430
tal storyboard tiegħi permezz ta 'dan
drop-down menu, wisq.

553
00:29:50,430 --> 00:29:56,600
>> Allura, jien ser ikklikkja fuq taqsima tiegħi,
u nixtieq, inti taf, forsi ħames ringieli.

554
00:29:56,600 --> 00:30:00,770
U mbagħad, ġewwa ta 'kull ringiela,
I tixtieq li jitqiegħed tikketta.

555
00:30:00,770 --> 00:30:04,080

556
00:30:04,080 --> 00:30:06,340
U jien ser sejħa dan Blue.

557
00:30:06,340 --> 00:30:09,530

558
00:30:09,530 --> 00:30:15,630
U mbagħad, I tixtieq li jitqiegħed ħsieb UI, inti
jaf, forsi għal, bħal, kaxxa ftit.

559
00:30:15,630 --> 00:30:23,840

560
00:30:23,840 --> 00:30:28,710
>> B'tali mod li nista juru nies
preview tal-kulur.

561
00:30:28,710 --> 00:30:34,150
U jien ser imorru lura lejn il-proprjetà u
bidla li kulur li, oh, I ma

562
00:30:34,150 --> 00:30:35,510
jafu, dan wieħed.

563
00:30:35,510 --> 00:30:38,630

564
00:30:38,630 --> 00:30:43,150
>> U mbagħad, tinnota wkoll, hawn, meta I jkollhom
l-aċċessorji, I jista 'jkollhom lottijiet

565
00:30:43,150 --> 00:30:46,160
mill-aċċessorji differenti
li inti tipikament tara.

566
00:30:46,160 --> 00:30:55,250
L-indikatur iżvelar, l-dettall, jew
check mark, jew sempliċiment biss dettall.

567
00:30:55,250 --> 00:30:59,080
Allura, forsi nistgħu nagħmlu, bħal, żvelar
indikatur, per eżempju.

568
00:30:59,080 --> 00:31:03,540
>> U mbagħad, għaliex ma nieħdu dawn, kopja
waħħalhom, u tpoġġihom fil-

569
00:31:03,540 --> 00:31:06,740
ringiela tabella li jmiss.

570
00:31:06,740 --> 00:31:08,115
Allura, nistgħu sejħa dan Yellow.

571
00:31:08,115 --> 00:31:10,620

572
00:31:10,620 --> 00:31:12,155
And I jista 'jkollhom biex testendi dan.

573
00:31:12,155 --> 00:31:15,730

574
00:31:15,730 --> 00:31:17,290
Ejjew nagħmluha isfar.

575
00:31:17,290 --> 00:31:20,610
U b'dan il-mod, nistgħu kopja
pejst mod tagħna isfel.

576
00:31:20,610 --> 00:31:24,910

577
00:31:24,910 --> 00:31:25,370
Liema kienet?

578
00:31:25,370 --> 00:31:26,620
Purple.

579
00:31:26,620 --> 00:31:30,020

580
00:31:30,020 --> 00:31:34,740
>> Għalhekk, dawn huma kollha l-CS50 tipiku
kuluri li inti stajt tidher fil-klassi -

581
00:31:34,740 --> 00:31:37,160
fil-fatt, sorry -

582
00:31:37,160 --> 00:31:38,410
jew fuq il-websajt.

583
00:31:38,410 --> 00:31:49,700

584
00:31:49,700 --> 00:31:51,260
Nisperaw li inti guys tista 'tara
dak li qed nagħmel hawn.

585
00:31:51,260 --> 00:31:57,270

586
00:31:57,270 --> 00:31:57,890
OK.

587
00:31:57,890 --> 00:31:58,490
Aħħar wieħed.

588
00:31:58,490 --> 00:32:02,040
>> UDJENZA: Kif ma inti żid
il-filliera inizjalment?

589
00:32:02,040 --> 00:32:04,740
>> RHED Shi: Għalhekk, il-kwistjoni kienet, kif
ma I żid il-filliera inizjalment?

590
00:32:04,740 --> 00:32:07,500
I marru fis dan taqsima tabella -
jew madankollu nista '

591
00:32:07,500 --> 00:32:09,200
tagħżel l-sezzjoni tabella -

592
00:32:09,200 --> 00:32:11,250
u mbagħad, here, I aġġornata
l-għadd ta 'ringieli.

593
00:32:11,250 --> 00:32:19,920

594
00:32:19,920 --> 00:32:22,505
>> U, let me tama li dan jaħdem.

595
00:32:22,505 --> 00:32:30,620

596
00:32:30,620 --> 00:32:31,480
OK.

597
00:32:31,480 --> 00:32:32,870
Ejja naraw jekk dan jaħdem.

598
00:32:32,870 --> 00:32:34,000
Oh, perfetta, tal-biża '.

599
00:32:34,000 --> 00:32:35,300
OK.

600
00:32:35,300 --> 00:32:40,330
Filwaqt I kien bini up demo tiegħi, xi
affarijiet ma kinux allinjati, hekk, grazzi għall-

601
00:32:40,330 --> 00:32:42,510
l-applause.

602
00:32:42,510 --> 00:32:42,920
>> Yeah.

603
00:32:42,920 --> 00:32:44,770
Allura, ejja ara.

604
00:32:44,770 --> 00:32:47,550
Aħna ser tagħmel dan disa biss biex jagħmlu
kollox - jew fil-fatt, ejja biss

605
00:32:47,550 --> 00:32:51,420
dawran kollha ta 'dawn in-iżvelar
indikaturi.

606
00:32:51,420 --> 00:32:55,790
U mbagħad, dak li nixtieq biex turi li inti, wisq,
kien kif I tista 'tieħu kull wieħed minn dawk

607
00:32:55,790 --> 00:32:59,230
ringieli mejda u jkollhom magħhom jinteraġixxu -

608
00:32:59,230 --> 00:33:00,150
oh.

609
00:33:00,150 --> 00:33:01,400
Nru.

610
00:33:01,400 --> 00:33:05,700

611
00:33:05,700 --> 00:33:06,030
>> Oh.

612
00:33:06,030 --> 00:33:07,230
Ukoll, I nuruk -

613
00:33:07,230 --> 00:33:13,080
hawn, I tista 'tpoġġi t-titolu ta tiegħi
kontrollur navigazzjoni, right?

614
00:33:13,080 --> 00:33:17,090
Allura fil-fatt, inti ser ikollok avviż, malli I
inkorporat dan il-kontrollur fehma ġewwa

615
00:33:17,090 --> 00:33:22,010
tal-kontrollur tan-navigazzjoni, naraw
dan il-bar ta 'navigazzjoni fil-quċċata ta' tagħna

616
00:33:22,010 --> 00:33:25,340
rappreżentazzjoni storyboard
ta 'kontrollur opinjoni.

617
00:33:25,340 --> 00:33:29,270
U għalhekk, dan jagħtina, bħal, viżwali,
tip ta ', gwida għall-iskrin viżibbli tagħna.

618
00:33:29,270 --> 00:33:34,360
Dan ovvjament se
jkun il-bar tan-navigazzjoni.

619
00:33:34,360 --> 00:33:40,950
>> U dak I trid tagħmel malajr,
issa, jiddaħħal fis ieħor -

620
00:33:40,950 --> 00:33:45,880
sabiex dan il-kontrollur fehma tabella għamilt minn
tieħu waħda minn dawn u jittrattienu

621
00:33:45,880 --> 00:33:49,800
hawn, u dan huwa dak li permessi me
malajr, tassew, joħolqu ħsieb tabella

622
00:33:49,800 --> 00:33:50,850
kontrollur.

623
00:33:50,850 --> 00:33:54,100
Jekk għandna l-ħin għalkemm, inti ser
tara li, programmatically, huwa

624
00:33:54,100 --> 00:33:57,660
ftit aktar delikata biex tinħoloq tabella
fehma kontrollur, minħabba li hemm

625
00:33:57,660 --> 00:34:02,520
huma koppja ta 'metodi li huma
meħtieġa biex inti, tip ta ', jiktbu

626
00:34:02,520 --> 00:34:07,130
out sabiex il-fehma tabella
kontrollur li jintwerew b'mod korrett.

627
00:34:07,130 --> 00:34:15,340
>> Madankollu, I biss irrid biex turi li inti, issa,
eżempju ta 'fejn, jekk nieħu din,

628
00:34:15,340 --> 00:34:15,920
per eżempju -

629
00:34:15,920 --> 00:34:18,290
Stajt jitqiegħdu kontrollur ieħor għan.

630
00:34:18,290 --> 00:34:27,320
U issa, ejja ngħidu I jridu jikkontrollaw
alt ewwel blu tiegħi

631
00:34:27,320 --> 00:34:28,980
ringiela tabella hawn.

632
00:34:28,980 --> 00:34:31,070
U nixtieq li sejħa dan Blue.

633
00:34:31,070 --> 00:34:32,570
U mbagħad -

634
00:34:32,570 --> 00:34:34,159
ejja ara.

635
00:34:34,159 --> 00:34:41,050
Jien fil-fehma issa, u I jistgħu jibdlu
l-isfond għal ikħal.

636
00:34:41,050 --> 00:34:45,945
>> U għalhekk, avviż, hawnhekk, dan drop-down
menu wkoll jagħtik ġerarkija ta 'kull

637
00:34:45,945 --> 00:34:47,040
ta 'dawn l-oġġetti.

638
00:34:47,040 --> 00:34:50,530
Allura ħaġa importanti li wieħed jinnota, hawn,
hija li kollha ta 'dawn l-affarijiet, hawn -

639
00:34:50,530 --> 00:34:54,330
dan il-kontrollur fehma tabella, it-tabella
fehma, sezzjoni fehma mejda, il-fehma tal-mejda

640
00:34:54,330 --> 00:34:57,169
ċelluli - dawn kollha huma
oġġetti, fil-kodiċi.

641
00:34:57,169 --> 00:35:03,752
Allura, inti taf, tikketta dritt issa huwa taħt
l-opinjoni kontenut, eċċetera.

642
00:35:03,752 --> 00:35:05,020
Hekk u ibqa 'sejjer hekk.

643
00:35:05,020 --> 00:35:08,765
>> Għalhekk, jekk aħna run dan il-kodiċi, aħna
għandha tara xi ħaġa -

644
00:35:08,765 --> 00:35:15,816

645
00:35:15,816 --> 00:35:17,870
ejja ara jekk dan - yeah.

646
00:35:17,870 --> 00:35:18,670
Għalhekk, hemm we go.

647
00:35:18,670 --> 00:35:22,120
Iżda, jekk aħna ma tagħmel dan, l-ebda
ta 'dawn l-affarijiet oħra jaħdmu.

648
00:35:22,120 --> 00:35:22,500
Dritt?

649
00:35:22,500 --> 00:35:23,800
Allura biss dan wieħed jaħdem.

650
00:35:23,800 --> 00:35:29,100
U, għall-fini ta 'żmien, jien mhux ser
tmur fis, tafu, it-tqegħid

651
00:35:29,100 --> 00:35:29,770
l-oħrajn.

652
00:35:29,770 --> 00:35:32,020
U dan huwa t-tmiem ta ',
tip ta ', storyboard -

653
00:35:32,020 --> 00:35:33,400
dak li ridt li juru
inti għall-storyboard.

654
00:35:33,400 --> 00:35:36,330

655
00:35:36,330 --> 00:35:43,490
>> U, I do jkollhom eżempju maħduma barra,
attwalment, dritt hawn.

656
00:35:43,490 --> 00:35:48,090
Għalhekk, din hija l-storyboard
li għamilt qabel.

657
00:35:48,090 --> 00:35:52,740
Allura, kif tistgħu taraw, dan kien
kontrollur navigazzjoni tiegħi.

658
00:35:52,740 --> 00:35:57,040
Imbagħad kelli kontrollur tiegħi fehma ewwel,
imbagħad I kellha kontrollur fehma mejda tiegħi,

659
00:35:57,040 --> 00:35:58,980
u mbagħad kelli kollha ta 'dawn -

660
00:35:58,980 --> 00:36:01,180
hekk qabel, I kienet tagħmel
xi ħaġa differenti ħafna.

661
00:36:01,180 --> 00:36:04,450
Għalhekk, skuża dawk l-affarijiet.

662
00:36:04,450 --> 00:36:07,930
I ser probabbilment inaddfu up aktar tard qabel
I ibgħatha għall-produzzjoni.

663
00:36:07,930 --> 00:36:12,800
>> Iżda, jekk aħna run dan, aħna ser tara
li l-għażliet huma

664
00:36:12,800 --> 00:36:14,050
disponibbli lilna.

665
00:36:14,050 --> 00:36:18,540

666
00:36:18,540 --> 00:36:21,320
Ħlief I ma jagħmlu l-isfondi
dawk il-kuluri.

667
00:36:21,320 --> 00:36:26,510
Għalhekk, l-applikazzjoni sempliċi sbieħ.

668
00:36:26,510 --> 00:36:28,340
>> Issa, ejja jippruvaw jindirizzaw
dan programmatically.

669
00:36:28,340 --> 00:36:31,270

670
00:36:31,270 --> 00:36:32,130
OK.

671
00:36:32,130 --> 00:36:37,570
Allura, biex tagħmel dan, aħna qed biss jmorru
li tibda proġett ġdid Xcode.

672
00:36:37,570 --> 00:36:41,920
Aħna ser jagħmilha applikazzjoni vojta issa,
għaliex aħna ma rridux li jkollhom l-

673
00:36:41,920 --> 00:36:42,380
storyboard.

674
00:36:42,380 --> 00:36:46,590
Allura, jien sempliċiment jirrestrinġu ruħi ma
tuża kwalunkwe ta 'l-storyboard, u

675
00:36:46,590 --> 00:36:49,170
applikazzjoni vojta mhux se
tagħti me a storyboard.

676
00:36:49,170 --> 00:36:52,256
Dan huwa biss biex tipprevjeni
myself minn qerq.

677
00:36:52,256 --> 00:36:54,428
Ejja ara.

678
00:36:54,428 --> 00:36:55,360
Stenna.

679
00:36:55,360 --> 00:36:55,960
Did I -

680
00:36:55,960 --> 00:36:56,448
iva.

681
00:36:56,448 --> 00:36:57,698
OK.

682
00:36:57,698 --> 00:37:08,650

683
00:37:08,650 --> 00:37:09,180
>> Dritt.

684
00:37:09,180 --> 00:37:16,790
Allura, hawn, aħna xellug ma
xejn imma kodiċi.

685
00:37:16,790 --> 00:37:19,460
Allura, let me jimxu il-tieqa
ftit aktar.

686
00:37:19,460 --> 00:37:22,020

687
00:37:22,020 --> 00:37:22,260
Dritt.

688
00:37:22,260 --> 00:37:28,160
Kif tistgħu taraw hawn, l-uniċi fajls
aħna qed jingħataw huma AppDelegate.h u dot

689
00:37:28,160 --> 00:37:30,500
m, u aħna ma jkollhomx
storyboard aktar.

690
00:37:30,500 --> 00:37:39,580
>> Allura jekk aħna run dan, aħna għadhom għaddejjin li
jiksbu l-iskrin abjad, nirringrazzjaw 'l Alla.

691
00:37:39,580 --> 00:37:42,280
OK - screen abjad, iżda xejn.

692
00:37:42,280 --> 00:37:45,260
U, hawnhekk huwa l-parti importanti.

693
00:37:45,260 --> 00:37:47,810
Dan huwa fejn jiġri l-azzjoni.

694
00:37:47,810 --> 00:37:51,410
Fil-verżjonijiet preċedenti, hemm
normalment ebda kodiċi hawn, iżda l-

695
00:37:51,410 --> 00:37:55,600
storyboard essenzjalment jipprovdi
il-kodiċi għall din il-parti.

696
00:37:55,600 --> 00:37:57,470
I mhux se tidħol fis-dettalji dwar kif.

697
00:37:57,470 --> 00:38:02,890
>> U dak li rridu nagħmlu issa hu, irridu
biex tmur fil hawn, u dan l-ispazju ftit

698
00:38:02,890 --> 00:38:05,050
jibda jinħoloq app tagħna għal darb'oħra.

699
00:38:05,050 --> 00:38:06,092
So -

700
00:38:06,092 --> 00:38:06,318
iva?

701
00:38:06,318 --> 00:38:07,450
>> UDJENZA: Zoom?

702
00:38:07,450 --> 00:38:07,770
>> RHED Shi: Zoom.

703
00:38:07,770 --> 00:38:09,020
Yeah, żgur.

704
00:38:09,020 --> 00:38:13,940

705
00:38:13,940 --> 00:38:14,520
OK.

706
00:38:14,520 --> 00:38:17,380
I ser tkun ittajpjar, għalhekk dan m'għandux
kwistjoni wisq.

707
00:38:17,380 --> 00:38:17,940
OK.

708
00:38:17,940 --> 00:38:22,720
>> Għalhekk, l-ewwel, ftakar aħna riedu joħolqu
kontrollur navigazzjoni, right?

709
00:38:22,720 --> 00:38:27,090
U wkoll, kif tistgħu taraw hawn, Xcode
tagħmel biċċa xogħol tassew kbira ta '

710
00:38:27,090 --> 00:38:28,070
awto-mili.

711
00:38:28,070 --> 00:38:31,650
Allura, kif inti ser avviż, l-ismijiet ta '
kollox huma ħafna itwal minn

712
00:38:31,650 --> 00:38:33,910
soltu, iżda Xcode timla fil għalik.

713
00:38:33,910 --> 00:38:35,710
So I tista 'biss għall-istampa Ikteb.

714
00:38:35,710 --> 00:38:40,180
>> So, I jixtiequ joħolqu navigazzjoni UI
kontrollur pointer, u I tista 'sejħa hija

715
00:38:40,180 --> 00:38:41,430
navigationController.

716
00:38:41,430 --> 00:38:43,040

717
00:38:43,040 --> 00:38:44,470
Issa, x'għandi nagħmel issa?

718
00:38:44,470 --> 00:38:49,510
Wara dan is-sinjal ugwali, I bżonn li, minn naħa,
joħolqu ġewwa ta 'memorja.

719
00:38:49,510 --> 00:38:53,790
Allura, jien ser tagħmel NavigationController
alloc -

720
00:38:53,790 --> 00:38:56,640
hekk, dan huwa simili għall malloc,
li inti guys użati C -

721
00:38:56,640 --> 00:38:58,400
u mbagħad, jien ser Iniz dan.

722
00:38:58,400 --> 00:39:03,670
>> Għalhekk, huwa verament importanti li kwalunkwe
oġġett li inti toħloq, inti tixtieq li

723
00:39:03,670 --> 00:39:04,940
alloc u Iniz dan.

724
00:39:04,940 --> 00:39:08,600
Li għaddej biex joħolqu dan u
instantialize ġewwa tal-memorja, u

725
00:39:08,600 --> 00:39:10,480
issa inti tista 'tagħmel użu minnha.

726
00:39:10,480 --> 00:39:10,780
Kull dritt?

727
00:39:10,780 --> 00:39:14,360
Jekk inti ma tagħmel dan, l-għan tiegħek ma
ma jeżistux, u tkun taf run fis mazz

728
00:39:14,360 --> 00:39:17,290
ta 'problemi.

729
00:39:17,290 --> 00:39:20,250
>> U mbagħad, I tixtieq toħloq
kontrollur ħsieb, right?

730
00:39:20,250 --> 00:39:25,580
So, I jixtiequ joħolqu UIViewController
star -

731
00:39:25,580 --> 00:39:29,620
hekk, kollox huwa pointer fil-
Għan-C, u jien ser tagħmel

732
00:39:29,620 --> 00:39:31,600
xi ħaġa simili, hawn -

733
00:39:31,600 --> 00:39:32,850
alloc, Iniz.

734
00:39:32,850 --> 00:39:38,680

735
00:39:38,680 --> 00:39:40,150
OK.

736
00:39:40,150 --> 00:39:43,450
>> U allura dak li jien ser tagħmel hu, jien
tmur - hekk, tiftakar meta għamilna

737
00:39:43,450 --> 00:39:45,360
il jintegraw fil-kontrollur navigazzjoni?

738
00:39:45,360 --> 00:39:46,920
Din hija kif inti tagħmel dan fil-kodiċi.

739
00:39:46,920 --> 00:39:54,550
Int ser tagħmel navigationController

740
00:39:54,550 --> 00:39:55,780
pushViewController -

741
00:39:55,780 --> 00:39:57,636
>> UDJENZA: [inaudible].

742
00:39:57,636 --> 00:39:59,030
Se dan jiġri għalina, jew -?

743
00:39:59,030 --> 00:40:00,080
>> RHED Shi: Oh, yeah.

744
00:40:00,080 --> 00:40:00,550
Nru.

745
00:40:00,550 --> 00:40:02,740
Hija jħobb me aħjar.

746
00:40:02,740 --> 00:40:04,670
Le, dan ser jaħdmu għalik, wisq.

747
00:40:04,670 --> 00:40:06,700
Għalhekk, dawn huma kollha metodi.

748
00:40:06,700 --> 00:40:10,400
Allura pushViewController huwa metodu, u
wkoll, b'mod aktar speċifiku, huwa ta '

749
00:40:10,400 --> 00:40:13,590
eżempju metodu ta 'l-UI
kontrollur navigazzjoni.

750
00:40:13,590 --> 00:40:20,030
Minħabba I kellhom joħolqu navigazzjoni UI tiegħi
kontrollur star, u mbagħad I

751
00:40:20,030 --> 00:40:24,510
tista 'sejħa dan pushViewController fuq tiegħi
eżempju speċifiku ta 'navigazzjoni UI

752
00:40:24,510 --> 00:40:25,010
kontrollur.

753
00:40:25,010 --> 00:40:29,490
>> UDJENZA: Do għandna nagħmlu l-eżatta
kelma, jew ma diġà jeżistu għal dan?

754
00:40:29,490 --> 00:40:31,380
>> RHED Shi: Iva, għaliex dan huwa metodu.

755
00:40:31,380 --> 00:40:32,200
Huwa simili funzjoni.

756
00:40:32,200 --> 00:40:33,330
Huwa simili printf.

757
00:40:33,330 --> 00:40:34,390
Huwa simili scanf.

758
00:40:34,390 --> 00:40:36,250
Huwa simili strcompare.

759
00:40:36,250 --> 00:40:40,310
Ħlief dan jaf dak li inti tista 'tixtieq li
tip, u tinnota li inneħħu dejjem

760
00:40:40,310 --> 00:40:42,740
toħroġ bi affarijiet li huma
legalment permessi għalik.

761
00:40:42,740 --> 00:40:47,620
Għalhekk, jekk xejn turi up hawn,
allura xi ħaġa ħażina.

762
00:40:47,620 --> 00:40:50,550
>> Allura, pushViewController.

763
00:40:50,550 --> 00:40:52,580
Allura, issa, nixtieq li timbotta
tiegħi maħluqa ġodda

764
00:40:52,580 --> 00:40:56,850
UIViewController, u mbagħad, animati -

765
00:40:56,850 --> 00:40:57,470
forsi le.

766
00:40:57,470 --> 00:41:00,110
Minħabba dan se jkun
l-ewwel kontrollur fehma.

767
00:41:00,110 --> 00:41:03,210
I mean, anki jekk I ma tagħmel animati,
hija probabbilment mhux se juru up, għaliex

768
00:41:03,210 --> 00:41:05,050
huwa l-ewwel iskrin.

769
00:41:05,050 --> 00:41:06,540
>> U ftakar-parentesi.

770
00:41:06,540 --> 00:41:08,850
Allura, tiftakar kif użajna-parentesi?

771
00:41:08,850 --> 00:41:11,870
U ġewwa l-parentesi, l-
oġġett jistieden metodu -

772
00:41:11,870 --> 00:41:15,910
hekk oġġett tagħna huwa l-navigazzjoni
kontrollur, u l-metodu huwa push

773
00:41:15,910 --> 00:41:17,210
kontrollur fehma animati.

774
00:41:17,210 --> 00:41:21,920
U tara kif jieħu fir żewġ argumenti,
u dawn qed separati mill-, tip ta ',

775
00:41:21,920 --> 00:41:24,390
kliem, u kolon.

776
00:41:24,390 --> 00:41:28,300
Allura, Għan-C jipprova jagħmel sbieħ
u faċli għalik biex taqra out loud -

777
00:41:28,300 --> 00:41:33,020
kodiċi tiegħek - u li hija semi,
tip ta ', jagħmel sens.

778
00:41:33,020 --> 00:41:37,150
>> Madankollu, qed jagħmlu dan
mhuwiex biżżejjed.

779
00:41:37,150 --> 00:41:39,780
Let me zoom out issa.

780
00:41:39,780 --> 00:41:44,210
Tagħmel biss dan mhux biżżejjed biex
tikseb dak li aħna ltqajna biex qabel.

781
00:41:44,210 --> 00:41:48,580
Allura hawn, inti ser ikollok avviż li hemm
fil-fatt mhux se tkun xi tip ta '

782
00:41:48,580 --> 00:41:50,190
bar, hawn, id-dritt?

783
00:41:50,190 --> 00:41:54,680
M'hemm l-ebda bar navigazzjoni, b'liema mezzi
li għadna ma gotten dan.

784
00:41:54,680 --> 00:41:58,850
>> U aħna tista 'test li out, ukoll, minn,
forsi, jinbidlu l-isfond ta '

785
00:41:58,850 --> 00:42:00,460
ViewController, right?

786
00:42:00,460 --> 00:42:01,710
ViewController.background--

787
00:42:01,710 --> 00:42:03,155

788
00:42:03,155 --> 00:42:03,640
ah.

789
00:42:03,640 --> 00:42:07,690
Allura, tara kif ViewController ma kellux
kulur l-isfond, anki jekk I

790
00:42:07,690 --> 00:42:08,780
riedu li jkollhom aċċess għaliha?

791
00:42:08,780 --> 00:42:14,080
U dan għaliex ViewController
huwa kontenitur għall-opinjoni.

792
00:42:14,080 --> 00:42:19,490
Għalhekk, hija għandha proprjetà ħsieb li
imbagħad għandha kulur fl-isfond.

793
00:42:19,490 --> 00:42:25,510
>> U, I tista 'tistabbilixxi, tip ta tediously,
billi ċċempel l-kulur

794
00:42:25,510 --> 00:42:28,130
fuq l-oġġett UIColor.

795
00:42:28,130 --> 00:42:33,210
Allura, avviż hawn, redColor huwa metodu.

796
00:42:33,210 --> 00:42:36,750
Huwa metodu klassi ta UIcolor.

797
00:42:36,750 --> 00:42:40,820
Minħabba I ma jridu joħolqu
f'każ konkret ta 'UIColor sabiex

798
00:42:40,820 --> 00:42:42,020
li jsejħu l-metodu fuqha.

799
00:42:42,020 --> 00:42:45,050
I biss, sempliċement, hija imsejħa
fuq l-isem bħall-tip.

800
00:42:45,050 --> 00:42:49,620
I, bħal, imsejħa fuq int, jekk int kellhom,
simili, metodu lilha, per eżempju.

801
00:42:49,620 --> 00:42:52,380
>> U hekk, jekk aħna run dan il-kodiċi, aħna ser
avviż li l-isfond huwa

802
00:42:52,380 --> 00:42:53,540
attwalment mhux aħmar.

803
00:42:53,540 --> 00:42:54,790
Huwa għadu abjad.

804
00:42:54,790 --> 00:42:57,720

805
00:42:57,720 --> 00:43:04,550
U kif nistgħu tikseb madwar jiġifieri,
avviż kif hemm il-self.window.

806
00:43:04,550 --> 00:43:08,260
Dan huwa, simili, il-kontenitur finali
għall-applikazzjoni tiegħek.

807
00:43:08,260 --> 00:43:11,630
Huwa l-ħaġa aħħari li fih
kollox fuq l-iskrin, għal

808
00:43:11,630 --> 00:43:13,650
iPhone jew l-applikazzjoni iPad.

809
00:43:13,650 --> 00:43:20,970
>> U, konvenjenti, self.window
għandha din il-proprjetà msejħa

810
00:43:20,970 --> 00:43:22,650
rootViewController.

811
00:43:22,650 --> 00:43:26,480
U li se tkun l-pointer li
l-ewwel kontrollur fehma ġewwa

812
00:43:26,480 --> 00:43:27,270
ta 'app tiegħek.

813
00:43:27,270 --> 00:43:32,000
Allura, dak li rridu nagħmlu hawnhekk, issa, hija
biex ikun stabbilit li ugwali għal navigazzjoni tagħna

814
00:43:32,000 --> 00:43:32,710
kontrollur.

815
00:43:32,710 --> 00:43:33,760
Dritt?

816
00:43:33,760 --> 00:43:37,490
Minħabba li, teknikament, navigazzjoni
kontrollur huwa ħafna ewwel ħsieb tagħna

817
00:43:37,490 --> 00:43:38,770
kontrollur.

818
00:43:38,770 --> 00:43:46,160
Hija żżomm kont ta 'firxa tal-vista oħra
kontrolluri, u aħna imbuttat dan

819
00:43:46,160 --> 00:43:49,810
kontrollur fehma f'dak array
fil-kontrollur tan-navigazzjoni.

820
00:43:49,810 --> 00:43:52,640
>> Allura, inti ma tridx tagħmel dan.

821
00:43:52,640 --> 00:43:54,225
Dan ma jkunx verament tgħinek.

822
00:43:54,225 --> 00:43:58,040
Inti tixtieq li tagħmel dan, jekk inti riedu jagħmlu
kontrollur navigazzjoni, li aktar

823
00:43:58,040 --> 00:44:01,100
inti probabilment se għaliex inti taf jridu
għal, tip ta ', għandhom xi tip ta',

824
00:44:01,100 --> 00:44:04,840
simili, menu li jmorru lura għal jew xi
homepage li jmorru lura għall, aktar milli

825
00:44:04,840 --> 00:44:05,470
iskrin vojta.

826
00:44:05,470 --> 00:44:05,920
Iva?

827
00:44:05,920 --> 00:44:11,460
>> UDJENZA: Huwa skomda
għal li inti zoom fl fuq il -

828
00:44:11,460 --> 00:44:12,710
>> RHED Shi: Yeah.

829
00:44:12,710 --> 00:44:15,310

830
00:44:15,310 --> 00:44:15,720
Allura, yeah.

831
00:44:15,720 --> 00:44:22,370
Dan huwa l-kodiċi, u issa
ejja tittestja out.

832
00:44:22,370 --> 00:44:27,920
>> Għalhekk, hemm we go.

833
00:44:27,920 --> 00:44:29,170
Magic.

834
00:44:29,170 --> 00:44:30,960

835
00:44:30,960 --> 00:44:32,690
Allura, OK.

836
00:44:32,690 --> 00:44:34,420
Grazzi.

837
00:44:34,420 --> 00:44:35,000
OK.

838
00:44:35,000 --> 00:44:38,690
Allura issa, dak li rridu nagħmlu huwa - iva,
aħna qed tip ta limitati, hawn, id-dritt?

839
00:44:38,690 --> 00:44:45,130
Nistgħu potenzjalment tikteb kollox
ġewwa ta 'din il-funzjoni waħda.

840
00:44:45,130 --> 00:44:48,470
Iżda, li mhux kif l-iżvilupp IOS
normalment taħdem.

841
00:44:48,470 --> 00:44:53,030
>> Allura, dak li aħna qed tmur biex tagħmel hu, aħna qed
se toħloq xi fajls ġodda.

842
00:44:53,030 --> 00:44:57,110
Iżda, b'mod aktar speċifiku, aħna qed tmur biex
joħolqu klassi oħra Għan-C, jew

843
00:44:57,110 --> 00:44:58,010
oġġett ieħor -

844
00:44:58,010 --> 00:45:00,700
klassi u l-oġġetti huma interkambjabbli
hawnhekk.

845
00:45:00,700 --> 00:45:06,460
U, hawnhekk kif I jistgħu, potenzjalment,
joħolqu klassi oħra ta 'kontrolluri U.

846
00:45:06,460 --> 00:45:12,030
>> Għalhekk, huwa sub-klassi, kif inti ser ikollok avviż,
hawn, huwa sub-klassi tal-

847
00:45:12,030 --> 00:45:15,910
Kontrollur fehma UI, iżda nista '
sejħa hija xi isem ieħor hawnhekk.

848
00:45:15,910 --> 00:45:19,400
I tista 'sejħa dan CS50, I tista' sejħa
dan il-kontrollur fehma, I tista 'sejħa

849
00:45:19,400 --> 00:45:21,640
dan blah fehma kontrollur -

850
00:45:21,640 --> 00:45:22,400
xejn irrid.

851
00:45:22,400 --> 00:45:24,140
Dan huwa biss l-isem għall-klassi.

852
00:45:24,140 --> 00:45:27,020
Madankollu, li għaddej biex tkun importanti
għaliex, essenzjalment, dak li qed nagħmel

853
00:45:27,020 --> 00:45:29,720
hawnhekk hija, jien ħolqien
isem ieħor klassi.

854
00:45:29,720 --> 00:45:34,140
Allura, li għaddej biex tkun, bħal, xi
tip ta 'tip jew ta' oġġett.

855
00:45:34,140 --> 00:45:35,910
Għalhekk, għandu jkun ftit ġenerika.

856
00:45:35,910 --> 00:45:37,225
Huwa mhux se tkun speċifika ħafna.

857
00:45:37,225 --> 00:45:40,410

858
00:45:40,410 --> 00:45:44,480
>> U wkoll, I do jridu punt
out dawn iż-żewġ għażliet.

859
00:45:44,480 --> 00:45:48,430
Minħabba li aħna qed tagħmel kollox ġewwa tal
kodiċi, xi kultant huwa ħafna aktar faċli

860
00:45:48,430 --> 00:45:53,540
li jdaħħlu fajl interface, b'tali mod li
I jistgħu litteralment drag u qatra, kif

861
00:45:53,540 --> 00:45:54,960
għamilna qabel ma storyboard -

862
00:45:54,960 --> 00:45:57,810
tafu, tikketta, jew buttuna,
jew kwalunkwe ħaġa oħra.

863
00:45:57,810 --> 00:46:01,950
U għalhekk, xibs huma fajls li jippermettu li inti
do li, u inti għandek ganċ it up

864
00:46:01,950 --> 00:46:04,310
għal dan il-fajl kontrollur fehma.

865
00:46:04,310 --> 00:46:06,540
>> Allura, jien ser deliberatament
ma tivverifika dan.

866
00:46:06,540 --> 00:46:12,510
Normalment I se tivverifika dan, u jekk I
biss għamlet dan għal iPhone jew iPad, I

867
00:46:12,510 --> 00:46:16,340
se tivverifika din u sempliċiment wieħed
, inti taf, l-iPhone jew iPad.

868
00:46:16,340 --> 00:46:19,750
Iżda peress li qed nagħmel universali, jien ser
biex joħolqu tnejn minn dawk aktar tard.

869
00:46:19,750 --> 00:46:22,220
Allura, jien ser deliberatament
uncheck dan.

870
00:46:22,220 --> 00:46:23,940
>> Dan huwa wkoll tassew importanti.

871
00:46:23,940 --> 00:46:27,490
Ħafna drabi, I kellna bugs
fejn dan ma kien ġie spezzjonat.

872
00:46:27,490 --> 00:46:31,930
U għalhekk, ovvjament, dan il-fajl mhuwiex,
tip ta ', bħal, inklużi jew importati

873
00:46:31,930 --> 00:46:33,740
ġewwa ta 'dan folder test.

874
00:46:33,740 --> 00:46:38,180
U għalhekk, il-kodiċi tiegħi għandha assolutament ebda idea
l-eżistenza ta 'dan il-fajl, u

875
00:46:38,180 --> 00:46:41,080
li tikkawża ħafna ta 'uġigħ
u s-sigħat ta 'debugging.

876
00:46:41,080 --> 00:46:44,360
Iżda, biss tagħmel ċert li din tkun eżaminata sabiex
li, tafu, il-mira ta 'din

877
00:46:44,360 --> 00:46:47,510
fajl huwa għal din l-applikazzjoni.

878
00:46:47,510 --> 00:46:48,310
>> OK.

879
00:46:48,310 --> 00:46:51,680
Allura, issa ħloqna żewġ fajls ġodda.

880
00:46:51,680 --> 00:46:54,050
U dawn il-fajls ħarsa pretty vojta.

881
00:46:54,050 --> 00:46:59,550
U, fil-fatt, ejja tkompli wkoll
mill-ħolqien tal-fajls XIb.

882
00:46:59,550 --> 00:47:03,690
Għalhekk, qabel, I kien fil-
Touch Kawkaw drop-down.

883
00:47:03,690 --> 00:47:06,880
Issa, jien ser jmorru fil-User
Interface touch, u kif tistgħu taraw, I

884
00:47:06,880 --> 00:47:08,120
tista 'toħloq storyboard.

885
00:47:08,120 --> 00:47:11,710
>> Għalhekk, anki I beda bil vojta
applikazzjoni, I xorta tista 'tuża

886
00:47:11,710 --> 00:47:12,340
storyboard.

887
00:47:12,340 --> 00:47:15,480
Għalkemm, jiġrilha delikata f'termini
ta 'kif inti tixtieq li jgħaqqdu

888
00:47:15,480 --> 00:47:16,820
li għall-kodiċi tiegħek.

889
00:47:16,820 --> 00:47:18,230
So, I mhux se jmorru hemm.

890
00:47:18,230 --> 00:47:22,160
>> Iżda, dak li rridu nagħmlu
issa hu li toħloq għan.

891
00:47:22,160 --> 00:47:25,720
U inti tista 'tagħżel għal
iPhone jew iPad.

892
00:47:25,720 --> 00:47:30,180
U tipikament, biex juri l-
differenza - jekk int tagħmel

893
00:47:30,180 --> 00:47:31,950
applikazzjoni universali -

894
00:47:31,950 --> 00:47:35,980
inti jew tpoġġi iPhone underscore,
jew inti tista 'tagħmel Twiddly.

895
00:47:35,980 --> 00:47:36,980
Hija ma verament kwistjoni.

896
00:47:36,980 --> 00:47:40,890
Huwa sempliċiment għalik biex jiddifferenzjaw
li għan huwa li għalih mezz.

897
00:47:40,890 --> 00:47:43,470

898
00:47:43,470 --> 00:47:44,430
>> U għalhekk, issa tfittex.

899
00:47:44,430 --> 00:47:47,550
I jkollhom skrin li I jistgħu jaħdmu ma '.

900
00:47:47,550 --> 00:47:53,530
U għalhekk, per eżempju, I tista 'tpoġġi tikketta
hawn fuq, inti taf, u nista 'wkoll ipoġġi

901
00:47:53,530 --> 00:47:54,820
ieħor buttuna hawn.

902
00:47:54,820 --> 00:47:58,730
I mhux se jolqot jinbidlu
il-valuri hawn.

903
00:47:58,730 --> 00:48:09,050
>> Iżda, x'inhu importanti hawnhekk huwa
dak is-sid tal-fajl -

904
00:48:09,050 --> 00:48:13,660
hekk, jien ġewwa tal-iPhone
fehma, file XIb iPhone.

905
00:48:13,660 --> 00:48:18,050
U 'l isfel f'dan il-qasam tan-navigazzjoni jew
drop-down menu, Irrid immur għall-

906
00:48:18,050 --> 00:48:19,090
sid fajl.

907
00:48:19,090 --> 00:48:22,630
U dan huwa l-verament
pass importanti hawnhekk.

908
00:48:22,630 --> 00:48:27,780
Irrid nagħmel l-opinjoni tal-klassi
kontrollur, b'tali mod li dan il-fajl XIb huwa

909
00:48:27,780 --> 00:48:30,030
ser tkun assoċjata ma '
kontrollur fehma tiegħi.

910
00:48:30,030 --> 00:48:33,590

911
00:48:33,590 --> 00:48:39,360
U dak kollu li nagħmel ġewwa tal-fehma tiegħi
kontrollur programmatically huwa

912
00:48:39,360 --> 00:48:42,800
ser jiġu riflessi hawn fuq.

913
00:48:42,800 --> 00:48:46,270
>> Allura, madankollu, tinnota li -

914
00:48:46,270 --> 00:48:55,995
attwalment, ejja jagħmlu din il-fehma
sfond blu, per eżempju.

915
00:48:55,995 --> 00:49:00,280

916
00:49:00,280 --> 00:49:01,530
Jew aħdar.

917
00:49:01,530 --> 00:49:03,870

918
00:49:03,870 --> 00:49:07,950
U mbagħad, hekk jekk inti taf Avviż, lura fl-
dan il-kodiċi, dan huwa fejn aħna ltqajna biex tagħna

919
00:49:07,950 --> 00:49:09,200
kontrollur navigazzjoni.

920
00:49:09,200 --> 00:49:12,650

921
00:49:12,650 --> 00:49:18,310
>> Anki jekk aħna ma dan il-pass, huwa
xorta se jkun aħmar, mhux aħdar.

922
00:49:18,310 --> 00:49:20,350
U hemm raġuni għaliex.

923
00:49:20,350 --> 00:49:28,090
Huwa minħabba, li meta aħna inited
kontrollur fehma tagħna, hawn -

924
00:49:28,090 --> 00:49:30,010
sorry, huwa ftit crazy -

925
00:49:30,010 --> 00:49:34,520
meta aħna inited kontrollur fehma tagħna hawn,
aħna inited it-tip ġenerali

926
00:49:34,520 --> 00:49:35,990
UIViewController.

927
00:49:35,990 --> 00:49:36,560
OK?

928
00:49:36,560 --> 00:49:40,560
Allura aħna lanqas biss tagħmel
ma 'din il-klassi.

929
00:49:40,560 --> 00:49:42,030
>> Mela ftakar, dan huwa simili klassi issa.

930
00:49:42,030 --> 00:49:47,160
Dan jista 'jitqies bħala tip, just
bħala UIViewController huwa tip.

931
00:49:47,160 --> 00:49:51,080
U sabiex jużaw dan, dak
għandna bżonn tagħmel hu li jimportah -

932
00:49:51,080 --> 00:49:52,520
importazzjoni ViewController -

933
00:49:52,520 --> 00:49:55,750
u, kif tistgħu taraw, hija
autofills għalija.

934
00:49:55,750 --> 00:49:56,570
Allura, ViewController -

935
00:49:56,570 --> 00:50:02,070
u issa, hawn, I jistgħu jbiddlu dan
UIViewController li ViewController.

936
00:50:02,070 --> 00:50:05,050
U issa, hawn, I jistgħu jibdlu
dan ViewController.

937
00:50:05,050 --> 00:50:07,790

938
00:50:07,790 --> 00:50:09,250
>> Ejja run dan jerġa.

939
00:50:09,250 --> 00:50:16,970

940
00:50:16,970 --> 00:50:19,690
Huwa għadu aħmar.

941
00:50:19,690 --> 00:50:23,370
U r-raġuni għaliex huwa
xorta aħmar huwa għaliex -

942
00:50:23,370 --> 00:50:26,230
Woah, x'ġara hemmhekk?

943
00:50:26,230 --> 00:50:31,500
Ridna li jassoċjaw din XIb
jippreżenta ma l-kontrollur fehma.

944
00:50:31,500 --> 00:50:37,540
Madankollu, sabiex fil-fatt jagħmlu
li, għandna bżonn li jmorru fis dan.

945
00:50:37,540 --> 00:50:42,980
U meta nagħmlu l Iniz, li rridu nagħmlu
initWithNibName, u mbagħad irridu

946
00:50:42,980 --> 00:50:48,910
jagħmlu l-fuq View_iPhone string,
per eżempju.

947
00:50:48,910 --> 00:50:51,700
Inti tista 'tinjora l-gozz hawn.

948
00:50:51,700 --> 00:50:54,965
>> U dan se jippermetti
ahna, fil-fatt -

949
00:50:54,965 --> 00:51:00,620

950
00:51:00,620 --> 00:51:02,160
UH oh, hemm problema.

951
00:51:02,160 --> 00:51:09,300

952
00:51:09,300 --> 00:51:09,980
Dritt.

953
00:51:09,980 --> 00:51:17,670
>> U hekk, hemm problema minħabba li, fil
tagħna file fehma XIb, għandna tikketta u

954
00:51:17,670 --> 00:51:18,720
għandna buttuna.

955
00:51:18,720 --> 00:51:23,660
Madankollu, anke jekk aħna stajt konnessi
dawn iż-żewġ, hemm xejn ġewwa ta '

956
00:51:23,660 --> 00:51:27,440
ViewController.h jew ViewController.m
li jirriflettu dawk

957
00:51:27,440 --> 00:51:29,160
buttuni jew dawk it-tikketti.

958
00:51:29,160 --> 00:51:32,425
Għalhekk, għandna bżonn li tikteb dawk bħala
proprjetajiet tal-kontrollur fehma.

959
00:51:32,425 --> 00:51:35,290

960
00:51:35,290 --> 00:51:39,490
>> Għalhekk, dan huwa kif inti tiddikjara
proprjetà.

961
00:51:39,490 --> 00:51:43,422
Huwa jieħu fil, normalment,
dawn iż-żewġ għażliet.

962
00:51:43,422 --> 00:51:48,690
Għall-finijiet ta 'magħna u dan is-seminar,
Jien ngħid li, b'mod ġenerali,

963
00:51:48,690 --> 00:51:52,250
aktar karatteristiċi huma nonatomic
u jżommu.

964
00:51:52,250 --> 00:51:55,420
Inti tista 'taqra minn Google tiftix,
tafu, id-differenza bejn

965
00:51:55,420 --> 00:51:58,620
nonatomic u jżommu, inti
taf, Google jew xi ħaġa.

966
00:51:58,620 --> 00:52:01,090
U jien ser tieħu inti, simili, munzell
Overflow, fejn in-nies se jkollhom

967
00:52:01,090 --> 00:52:03,605
tweġibiet għad-differenzi
bejn dawk.

968
00:52:03,605 --> 00:52:07,000
Iżda għal issa, dan huwa dak aħna
jridu ikunu konċernati bl.

969
00:52:07,000 --> 00:52:12,790
>> U rridu li jagħmlu tikketta UI, star,
u nistgħu sejħa hija xi rridu.

970
00:52:12,790 --> 00:52:15,710
Nistgħu sejħa dan, inti taf, tikketta.

971
00:52:15,710 --> 00:52:18,270

972
00:52:18,270 --> 00:52:20,110
U, aħna ser joħolqu ieħor
wieħed għall-buttuna.

973
00:52:20,110 --> 00:52:24,380

974
00:52:24,380 --> 00:52:29,910
U ftakar li jinkludu l-asterisk,
għaliex aħna qed jittrattaw ma 'pointers

975
00:52:29,910 --> 00:52:36,740
pretty ħafna kullimkien ġewwa
tal-Objettiv-C.

976
00:52:36,740 --> 00:52:42,110
>> Madankollu, dan xorta mhux se ssolvi
l-problema, kif tistgħu taraw hawn.

977
00:52:42,110 --> 00:52:50,540
U r-raġuni għaliex, kull meta aħna
tixtieq li jgħaqqdu tikketta fajl XIb jew

978
00:52:50,540 --> 00:52:55,690
buttuna għall-programm, jew il-header
u l-fajl implimentazzjoni, irridu

979
00:52:55,690 --> 00:52:58,255
żid din il-biċċa tal-kodiċi -

980
00:52:58,255 --> 00:53:00,610
outlet.

981
00:53:00,610 --> 00:53:03,600
Avviż li huwa kelma prinċipali.

982
00:53:03,600 --> 00:53:07,970
>> U, malli I finish ittajpjar
li minn, għandu jkollhom dawn

983
00:53:07,970 --> 00:53:09,100
żewġ ċrieki, hawn.

984
00:53:09,100 --> 00:53:11,200
Normalment, dawn mhux qed mimlija pulzieri

985
00:53:11,200 --> 00:53:12,920
M'inix ċert għaliex huma.

986
00:53:12,920 --> 00:53:21,370
Iżda ġeneralment, inti ser ikollok manwalment
qabbad lilhom billi tmur din in-naħa tal-

987
00:53:21,370 --> 00:53:23,530
iż-żona utilitajiet.

988
00:53:23,530 --> 00:53:28,430
>> U għalhekk, id-dritt issa, stajt ltqajna tikketta tiegħi
magħżula, u nixtieq li jkaxkru dan ġdida

989
00:53:28,430 --> 00:53:33,910
referenzar outlet lis-sid file tiegħi,
u mbagħad ikklikkja fuq Label.

990
00:53:33,910 --> 00:53:40,230
Allura issa, finalment, din it-tikketta hija
konness ma din it-tikketta.

991
00:53:40,230 --> 00:53:44,950
U din it-tikketta huwa dak li aħna qed tmur biex
jużaw programmatically għall-bidla tagħha

992
00:53:44,950 --> 00:53:49,250
test, font tagħha, l-isfond tagħha
kulur, eċċetera.

993
00:53:49,250 --> 00:53:52,430
>> Allura, għaliex ma nagħmlu l-
istess għall-buttuna?

994
00:53:52,430 --> 00:53:54,770
U kif tkun taf Avviż, għall-buttuna,
huwa ftit aktar kumplikata.

995
00:53:54,770 --> 00:53:59,060
Minħabba, I mean, int suppost
istampa fuq buttuna, għalhekk huwa ltqajna lott

996
00:53:59,060 --> 00:54:02,950
ta 'għażliet għal kif l-utenti
tista 'tagħfas fuq buttuna.

997
00:54:02,950 --> 00:54:06,570
U mbagħad, aħna ser tara aktar tard li
nistgħu jgħaqqdu dan tagħna

998
00:54:06,570 --> 00:54:09,140
kodiċi jagħmluha taħdem.

999
00:54:09,140 --> 00:54:12,770
>> Għalhekk, għal issa għalkemm, aħna tixtieq li jgħaqqdu
lill-buttuna attwali

1000
00:54:12,770 --> 00:54:13,570
ġewwa tal-kodiċi tagħna.

1001
00:54:13,570 --> 00:54:19,640
Allura aħna mur l-iżbokk referenzar ġdid,
u mbagħad jagħmlu l-buttuna.

1002
00:54:19,640 --> 00:54:22,068
Issa, ejja run dan jerġa.

1003
00:54:22,068 --> 00:54:23,040
Uh oh.

1004
00:54:23,040 --> 00:54:23,890
OK.

1005
00:54:23,890 --> 00:54:25,140
I do not know x'inhu għaddej hawn issa.

1006
00:54:25,140 --> 00:54:48,450

1007
00:54:48,450 --> 00:54:49,700
Whoa.

1008
00:54:49,700 --> 00:54:57,380

1009
00:54:57,380 --> 00:54:58,960
Just wieħed mument, hawnhekk.

1010
00:54:58,960 --> 00:55:02,490
>> Attwalment, għaliex ma nieħdu
ħarsa lejn eżempju ieħor

1011
00:55:02,490 --> 00:55:05,800
l-interess ta 'żmien.

1012
00:55:05,800 --> 00:55:06,200
OK.

1013
00:55:06,200 --> 00:55:10,610
Allura, hawn l-preparati aktar faċilment
eżempju għal ViewController.

1014
00:55:10,610 --> 00:55:13,230

1015
00:55:13,230 --> 00:55:17,110
Kif tistgħu taraw hawn, stajt inklużi
il-proprjetajiet għall-

1016
00:55:17,110 --> 00:55:18,460
tikketta u l-buttuna.

1017
00:55:18,460 --> 00:55:20,370
U mbagħad, din il-biċċa tal-kodiċi hawn -

1018
00:55:20,370 --> 00:55:21,830
dan IBaction -

1019
00:55:21,830 --> 00:55:27,740
kien konnessjoni għal din il-buttuna hawn.

1020
00:55:27,740 --> 00:55:33,940
Allura kif tista 'tara hawn, Touch Up Ġewwa
huwa konness mal-selettur

1021
00:55:33,940 --> 00:55:37,390
imsejħa Button ippressat.

1022
00:55:37,390 --> 00:55:41,700
>> Allura, nistgħu ngħidu jgħaddu mill-
mozzjoni għal darb'oħra, hawnhekk, billi Touch Up

1023
00:55:41,700 --> 00:55:48,750
Ġewwa u jittrattienu biex
Sid File, u mbagħad

1024
00:55:48,750 --> 00:55:51,570
ikklikkja fuq Button ippressat.

1025
00:55:51,570 --> 00:55:52,820
Issa, ejja jimxu kodiċi tagħna.

1026
00:55:52,820 --> 00:55:55,710

1027
00:55:55,710 --> 00:56:02,020
Allura issa, din il-buttuna issa xogħlijiet u
se tieħu magħna biex il-paġna li jmiss.

1028
00:56:02,020 --> 00:56:08,430
>> U, f'termini ta 'kontrollur fehma tagħna,
dan huwa l-biċċa tal-kodiċi li jkun ħa

1029
00:56:08,430 --> 00:56:10,000
kura tal-Button ippressat.

1030
00:56:10,000 --> 00:56:14,260
U huwa importanti li wieħed jinnota hawnhekk, li
Stajt maħluqa tip ieħor ta 'opinjoni

1031
00:56:14,260 --> 00:56:16,330
kontrollur imsejħa tabella
kontrollur fehma.

1032
00:56:16,330 --> 00:56:19,900
Għalhekk, dan kien simili għal lura fil-
storyboard, meta I mkaxkra wieħed ta '

1033
00:56:19,900 --> 00:56:23,450
dawn il-kontrolluri view tabella
fil-storyboard.

1034
00:56:23,450 --> 00:56:24,470
Jien ħolqien ieħor

1035
00:56:24,470 --> 00:56:30,000
>> Pointer lill-kontrollur fehma mejda,
alloc u Iniz-Ing, u mbagħad tagħmel

1036
00:56:30,000 --> 00:56:34,490
kontrollur navigazzjoni awto dot,
timbotta ViewController, dan ġdida

1037
00:56:34,490 --> 00:56:35,350
viewController.

1038
00:56:35,350 --> 00:56:39,750
U stajt stabbiliti l-animazzjoni li iva,
għaliex issa ġewwa ta 'app tiegħi, u jien

1039
00:56:39,750 --> 00:56:45,670
trid attwalment ara l-animazzjoni għaddej
mill-home page għall-mejda

1040
00:56:45,670 --> 00:56:46,920
kontrollur fehma.

1041
00:56:46,920 --> 00:56:48,830

1042
00:56:48,830 --> 00:56:51,110
>> UDJENZA: Inti xorta ninkwetaw
dwar ġbir taż-żibel?

1043
00:56:51,110 --> 00:56:51,840
>> RHED Shi: X'hemm li?

1044
00:56:51,840 --> 00:56:54,740
Nru.

1045
00:56:54,740 --> 00:56:58,970
Għalhekk, il-kwistjoni kienet, għandek
biex jaħdmu mal-ġbir taż-żibel?

1046
00:56:58,970 --> 00:57:03,470
Allura, Xcode 4 kellha bħal ARC, li hija
għadd referenza awtomatiku.

1047
00:57:03,470 --> 00:57:06,120
U għalhekk, normalment meta tibda ġdida
proġett, inti tiċċekkja li, minħabba

1048
00:57:06,120 --> 00:57:09,440
ebda waħda verament jixtieq li jittrattaw
ħelsien memorja u l-għalf.

1049
00:57:09,440 --> 00:57:13,720
Imma naħseb fil Xcode 5, lanqas biss hemm
din l-għażla fuq il-proġett il-ġdid.

1050
00:57:13,720 --> 00:57:16,750
Għalhekk, awtomatikament
ma dan għalik.

1051
00:57:16,750 --> 00:57:16,920
Iva?

1052
00:57:16,920 --> 00:57:20,970
>> UDJENZA: Tista esportazzjoni
PDF fil storyboard tiegħek?

1053
00:57:20,970 --> 00:57:22,020
>> RHED Shi: Yeah, definittivament.

1054
00:57:22,020 --> 00:57:28,180
Għalhekk, dawn kollha se jkunu inklużi fil-
kodiċi tas-sors, sabiex inti guys tista 'check out

1055
00:57:28,180 --> 00:57:30,730
il-proġett Xcode attwali għal dan.

1056
00:57:30,730 --> 00:57:31,105
Yeah?

1057
00:57:31,105 --> 00:57:35,944
>> UDJENZA: Iżda, I mean, bħal, nista '
tipprintja PDF ma storyboard tiegħi?

1058
00:57:35,944 --> 00:57:38,920
Jekk I biss jixtiequ li jesporta l-
immaġini biex juru xi ħadd.

1059
00:57:38,920 --> 00:57:39,160
>> RHED Shi: Oh yeah.

1060
00:57:39,160 --> 00:57:41,980
I think, forsi, inti tista 'sempliċement
tieħu screen shot.

1061
00:57:41,980 --> 00:57:44,350
Yeah, u jibgħathom skrin
shot jew xi ħaġa.

1062
00:57:44,350 --> 00:57:45,600
Yeah.

1063
00:57:45,600 --> 00:57:49,170

1064
00:57:49,170 --> 00:57:50,570
>> Allura, ejja ara.

1065
00:57:50,570 --> 00:57:56,470
Fl-interess ta 'żmien, I think
li kollox l jistgħux ikopru illum.

1066
00:57:56,470 --> 00:57:59,600
Imma, naf li, fil-fatt, biss
bilkemm tmiss il-wiċċ ta 'IOS

1067
00:57:59,600 --> 00:58:00,370
iżvilupp.

1068
00:58:00,370 --> 00:58:05,630
Allura, jekk jogħġbok tħossok liberu li tikkuntattjani jekk
għandek xi mistoqsijiet dwar IOS

1069
00:58:05,630 --> 00:58:07,000
iżvilupp.

1070
00:58:07,000 --> 00:58:12,840
U, forsi, I ser tkun kapaċi li jitnaddfu
up xi wħud mill-kodiċi għall-sors

1071
00:58:12,840 --> 00:58:16,830
fajls kodiċi, sabiex inti ser ikollok xi
eżempji tassew sbieħ li jaħdmu magħhom.

1072
00:58:16,830 --> 00:58:21,020
>> Għajr li, jekk inti guys huma ser
għall-Hackathon CS50, I jista 'jew jista'

1073
00:58:21,020 --> 00:58:25,730
ma jkun hemm, u I jistgħu jgħinu out
ma 'xi żvilupp IOS, wisq.

1074
00:58:25,730 --> 00:58:26,980
Allura, grazzi ħafna, guys.

1075
00:58:26,980 --> 00:58:31,168