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[Powered by Google Translate] [Semina] [Android Apps (Sasa na Jelly Maharage!)]

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[Jordan Jozwiak] [Chuo Kikuu cha Harvard]

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[Hii ni CS50.] [CS50.TV]

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>> Hello kila mtu, na kuwakaribisha kwa Programu Android (Sasa na Jelly Maharage!) Semina.

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Ni wito Sasa na maharagwe jelly, bila shaka, kwa sababu

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toleo la karibuni la OS inaitwa Jelly Bean.

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Wakati mimi aliongea kuhusu Android mwaka jana na walifanya semina hii kimsingi sawa

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Mimi nilikuwa kuwasilisha mwelekeo wa kubuni na uchaguzi Stylistic kwa Gingerbread,

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hata kama Ice cream Sandwich alikuwa ametoka kwa wakati,

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na hii ni kitu tutaweza kuzungumzia kwenda mbele kidogo.

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Admin, bila shaka, ina baadhi ya masuala na kugawanyika,

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hivyo karibuni Google mfumo wa uendeshaji ni kawaida

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si kweli kwenda kuwa ya kawaida kati ya watumiaji kwa uwezekano hadi mwaka, kwa bahati mbaya.

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>> Lakini kutokuzingatia kwamba, tutaweza kuzungumzia mengi ya sababu kwa nini

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Admin ni bora zaidi kuliko iOS.

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Sawa, tutaweza kuzungumzia Android dhidi ya iOS,

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mitizamo ya kubuni baadhi, jinsi utasikia kupata kuanzisha katika tu slide moja,

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na tofauti kubwa kati ya hii na mwaka jana ni mimi nataka tu

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zoom kupitia baadhi ya mambo ya dhana kufanya kazi na

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mfumo wa uendeshaji na kisha kwenda katika mfano kweli ya msingi.

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Kwa kweli, mfano tu kwamba Google inaeleza kwa ajili ya kujenga programu yako ya kwanza,

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na tutaweza kwenda kwa njia hiyo pamoja na tu kuelezea.

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>> Najua wengi wenu tu coded katika C, hivyo Java ni tayari kwenda kuwa

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mtazamo tofauti, na kwa njia hii utasikia kupata miguu yako mvua

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na kujisikia kidogo vizuri zaidi na hivyo hopefully.

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muhtasari wa haraka, free dhidi ya iOS.

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Katika Android kuna hii moja wakati developer ada ya $ 25,

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hakuna wa hii kitu $ 100 kwa mwaka.

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Hakuna vikwazo, ambayo ina maana kwamba kama nataka kuwasilisha programu,

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Mimi tu kuwasilisha, na hakuna idhini ya mchakato kama kuna kwa iOS.

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Kupata na kuendeleza na kutumia Java Eclipse,

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ambayo ni msalaba jukwaa, hivyo haijalishi kama una Mac,

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Madirisha, au baadhi ya mashine ya Linux.

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Bila shaka, na iOS una kutumia XCode ya Mac,

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na Android hutumiwa na watu wengi zaidi,

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hivyo kama unataka programu yako ya kuwa na aina fulani ya kujulikana au labda

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pesa kidogo kutoka kwa matangazo

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wewe pengine zaidi uwezekano wa kunufaika na free.

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>> Na jambo moja kwamba daima imekuwa inajulikana kuhusu Android

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ni kiasi uliokithiri wa customization, ambapo iOS sana fasta katika njia zao

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ili waweze kudumisha usalama na udhibiti juu ya kila kipengele kidogo

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ya kubuni ndani ya OS yao na programu ya mtu binafsi.

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Admin ni fomu bure, na kuna wengi zaidi uwezekano.

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Sawa, mitizamo ya kubuni baadhi.

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Taarifa hapa tu kama iOS ina vidonge iphone na kumgusa na iPod

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wana wa kusaidia, kusema, kama vifaa kadhaa kama unataka kusaidia

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kihistoria mambo kama vile.

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Na Android una kusaidia mamia ya vifaa,

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hivyo kuna baadhi ya mambo ambayo Google imekuwa kujaribu kutekeleza

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kufanya mtumiaji uzoefu zaidi kidogo thabiti,

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lakini tutaweza pia majadiliano kuhusu jinsi hii ina maana kwamba kuna masuala ya kugawanyika

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kwamba wewe daima kuwa na ufahamu wa kusaidia.

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Kugawanyika ina maana kwamba kuna tofauti ya mifumo ya uendeshaji,

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nyingi tofauti za pamoja na vifaa mbalimbali mbio Android wote kwa wakati mmoja,

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hivyo graph hii hapa inakwenda nyuma kwa miezi 6.

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Yeah, miezi 6, na unaweza kuona jinsi bendi ya giza

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juu ya chini ni Jelly Bean, ambayo akatoka juu ya jua,

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na unaweza kuona sasa hivi pengine juu ya 2% ya simu za kuwa nayo.

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>> Ice cream Sandwich akatoka zaidi ya mwaka mmoja uliopita,

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na robo ya simu za kuwa nayo.

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Bado kuna mengi ya simu za kwamba ni kwa kutumia OS version kutoka miaka iliyopita.

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Jambo moja kwamba Google amejaribu kufanya ili kufanya uzoefu wa mtumiaji

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mengi zaidi thabiti katika programu ni kwa kuanzia na asali,

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ambayo ni toleo kibao, kisha Ice cream Sandwich na Jelly Bean,

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wao ni kweli kujaribu kusisitiza matumizi ya bar hatua hii,

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ambayo ni nini unaweza kuona kwa juu hapa,

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haki ya kila kitu hapa, ikiwa ni pamoja na kifungo hiki kidogo mazingira.

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Ni uchaguzi design.

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Sasa, wakati wowote unaweza kuona dots 3 maana bonyeza hii,

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na kutakuwa na drop-down menu, ambayo ina baadhi ya aina ya vipimo.

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Hii inaonyesha tu juu kwa sababu mimi clicked juu ya kifungo hiki.

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Hii ni kitu ambacho wao ni kujaribu kutumia kufanya programu zaidi kidogo thabiti

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katika bodi na hivyo mtumiaji ina hali nzuri zaidi ya uzoefu wa sare.

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>> Sawa, hivyo katika kesi hujafanya hili tayari au kama wewe ni kuangalia nyumbani

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basi unaweza kufuata hatua hizi kuanzisha mazingira yako coding.

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Itakuwa kuhusisha kwenda tovuti hapa.

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Unaweza kufunga Google Android SDK

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na kufuata maelezo ya baadhi ya huko.

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Wao kukuambia kila kitu.

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Wana wa kufunga SDK, Shusha Eclipse Classic toleo,

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hata ingawa, bila shaka, sisi ni coding katika Java.

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Wao kupendekeza hii moja, na kisha hii ADT, Maendeleo ya Android Tools,

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ni Plugin kwamba kufunga katika Eclipse ambayo inaruhusu

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kuwa na uzoefu zaidi harmoniserad na Android ndani Eclipse.

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Ni nitakupa baadhi interfaces user grafiki

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kwa kubuni maoni, na itakuwa kukupa zaidi sana msaada

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na uwezo wa uzinduzi na emulator na kwamba kila aina ya kitu.

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Maombi ya mfumo.

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>> Nataka kuzungumza kuhusu jinsi miradi ya ndani ya Android ni muundo,

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na kisha tutaweza kwenda katika mfano wa haraka, na hopefully

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unaweza kuuliza maswali katika hatua yoyote na kujisikia vizuri na mwisho wa hayo.

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Tuna baadhi ya jargon ya kwanza.

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shughuli ni kama screen unaweza kuona wakati kuzindua programu.

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uzoefu nzima ni shughuli yenyewe,

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hivyo unaweza kufikiria kama screen au maoni,

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lakini ni kweli kanuni chanzo upande wa hayo.

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Sisi bado wito halisi interface sehemu yake maoni.

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Ni aina ya kama jinsi katika pset 7 tulikuwa na mtawala na kisha maoni.

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shughuli ni zaidi au chini ya mtawala,

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na maoni ni nini sisi ni kufanya katika suala la XML

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kwamba ni kuhusishwa na shughuli hiyo.

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Vipande ni kitu ambacho kutekelezwa katika Ice cream Sandwich kwenda mbele.

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Ni wazo tu ya kuchukua sehemu ya maoni au shughuli

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na kugawa yao katika maeneo tofauti ili tuweze

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kufanya kanuni zetu zaidi inatumika kwa ajili ya vifaa hizi nyingi tofauti

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kwamba tuna kusaidia, na ni njia tu ya kujaribu

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pia sababu nje zaidi ya kanuni.

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Huduma ni mambo ya historia kama kucheza muziki au maelekezo urambazaji uwezekano.

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Watoa bidhaa, haya ni API ndani ya mfumo wa uendeshaji

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kwamba kuruhusu kupata data ya pamoja kama vile mawasiliano ya habari,

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na kisha dhamira ni kitu tutaweza kutumia wakati tunataka kuzindua

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shughuli mpya kutoka shughuli yetu ya sasa.

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>> Hujambo Android, hii ni kwenda kuwa mradi kwamba tutaweza kuzungumzia.

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Mimi itabidi kweli kufanya hivyo kwa ajili yenu, na kisha tutaweza kufanya kitu ambapo sisi bonyeza kifungo

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pamoja na baadhi ya maandishi na kuzindua shughuli mpya.

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Rahisi sana, lakini nataka kwenda kwa njia ya

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nini kwenda katika mradi kama huu.

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Wakati wa kufanya mradi mpya utaona ndani ya kupatwa

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kuna mradi huu iitwayo Jambo free.

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Kisha kuna rundo zima la folders hapa.

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ndio wewe ni kweli wasiwasi na ni folda chanzo,

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folder rasilimali, res, na kwa kiasi fulani folder libs kwa ajili ya maktaba.

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Na hivyo tu sisi ni juu ya ukurasa huo na kwamba

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kama ungekuwa na kujenga mradi mpya,

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unaweza kufanya hivyo hapa hapa, hivyo kama nataka kuiita HelloAndroid,

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na kisha ni moja kwa moja anafanya rundo zima la habari kwa ajili yetu.

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jina mfuko zinatakiwa kuwa kitambulisho kipekee

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kwamba ingekuwa kawaida kuhusishwa na tovuti, kama wewe alikuwa mmoja.

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>> Kwa mfano, mimi wito huu net.cs50.helloandroid.

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Na mimi tayari wamefanya mradi huu mara moja.

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Sawa, pole. Hebu simu yake HelloCS50.

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Na kisha itakuwa kuuliza mambo kama aina gani ya icon nini tunataka kufanya.

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Hii yote ni kwa sababu ya interface Android Developer Tools,

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Plugin kwamba sisi aliongeza kwa Eclipse, hivyo tunaweza kuchagua mambo kama

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nini icon tunataka, na kwamba ingekuwa kwenda katika kina kwamba kama tunataka.

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Lakini mwisho, tu kufanya mradi,

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na kila kitu inaonyesha juu hapa hapa.

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Kama mimi ilionyesha juu ya screen nyingine,

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tuna chanzo folder, na mimi itabidi kuzungumza kuhusu nini hii yote ina maana hivi karibuni,

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lakini unaweza kuona kwamba mara moja inachukua sisi screen HelloCS50.

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Kuna baadhi ya kifungo zaidi ya hapa kwa ajili ya kuongeza Layouts shamba maandishi na maandishi.

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Ni aina ya kama XCode lakini kwa bahati mbaya kabisa kama harmoniserad.

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Lakini video utakuwa rafiki yako na ADT hasa kwa kufanya hivyo.

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>> Sawa, folder chanzo ni wapi

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Files Java ni uliofanyika, na hii ni kweli uzinduzi wa programu yako.

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Ni kimsingi kama controllers.

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folder rasilimali au res ni ambapo tutaweza kuweka Layouts screen,

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picha, sauti, maandishi, uhuishaji na kila kitu kingine, libs, ni wazi, maktaba.

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Na Dhihirisha, ni njia kwamba mfumo Android anajua

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jinsi ya kushirikiana na programu yako.

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Ni anasema ni kuhusu ruhusa na nini shughuli kweli kuwa na kukimbia.

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Ni taarifa zote muhimu kwamba ni muhimu katika kuendesha programu yako.

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folder chanzo ni-kama sisi kupanua kama unaweza kuona hapa hapa.

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Na mfano kwamba kanuni bila kuangalia-hii ni kanuni ya msingi.

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Kama sisi kuitwa hivyo, MainActivity.

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By default, sisi kupata onCreate, ambayo ni kazi hiyo inaitwa wakati shughuli hii mizigo,

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hivyo unataka simu onCreate (savedInstanceState).

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Hii itakuwa kurejesha bits yoyote ya habari

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katika kesi programu ulisitishwa.

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>> Kuna shughuli nzima ya duru ya maisha chati ambayo unaweza kuangalia

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wakati kupata zaidi kidogo kwa kina ndani yake,

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lakini line muhimu ya maadili kuna kazi huu setContentView

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ambayo itakuwa mzigo faili rasilimali kwa ajili ya mpangilio.

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Kisha nini onCreate hapa ni kimsingi ni kufanya ni kusema

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wakati mimi kuunda shughuli hii nataka kupakia hii layout.

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Na tutaweza majadiliano juu ya kile layout kuwa ni katika pili.

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Kama tulikuwa na uzinduzi kwamba hapa inaonekana hasa kama hii,

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na kwa default kwa sababu tuna kupatwa kufanya hili na ADT kufanya hivyo kwa ajili yetu

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hii yote ni kanuni boilerplate kwamba ni umba kwa ajili yetu,

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na tunaweza kuendelea na kubadili mambo kama sisi kama.

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folder rasilimali, kama nilivyosema, hii ni mahali ambapo sisi kushikilia Layouts wote,

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drawables katika suala la aina yoyote ya picha-

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wao ni kuitwa drawables-na kisha sauti files, menus.

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Ni njia ya rundo zima la XML katika mtindo mzuri Iliyopangwa.

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Kama unaweza kuona, kuna hdpi, ldpi, MDPI na folders xhdpi kwa drawables..

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Hizi ni tofauti screen msongamano, hivyo high wiani pixel kwa kila inchi,

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Asili wiani, kati wiani, ziada high wiani.

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>> Hii ni mara ya pili, ili tuweze kusaidia haya vifaa mbalimbali,

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na walau, utakuwa na picha tofauti kwa azimio kila tofauti.

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Layouts ni ambapo sisi ni pamoja na Layouts yote tofauti ambazo zitatumika katika shughuli mbalimbali.

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Wangeweza pia ni pamoja na Layouts kwa nguvu,

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ambayo ina maana ya shughuli za sehemu ya kimsingi.

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Kama unataka kufanya kitu baridi kama wakati wowote mzunguko simu

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unataka kuwa na mpangilio tofauti unaweza kufanya layout-mazingira kama folda tofauti,

185
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na Android moja kwa moja ina rundo zima la sheria hizi ndani ya folda rasilimali,

186
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hivyo itakuwa kujua kuangalia folders tofauti ya msingi ya kuanzisha ya sasa ya simu,

187
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aina gani ya vifaa wewe ni kutumia.

188
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Vile vile, hii maadili-v11 hapa na maadili-v14

189
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na maadili default folder hii ni kwa ajili ya-

190
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vizuri, maadili na yenyewe, hii itakuwa maadili default katika matoleo yote ya mfumo wa uendeshaji.

191
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Kwa upande mwingine, na v11 v14 yanahusiana na asali

192
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na Ice cream Sandwich, kwa mtiririko huo.

193
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Tena, hizi ni njia ambazo-ndani ya hizi folders ni tofauti masharti

194
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na mitindo, hivyo unaweza Customize ya kuonekana ya programu yako

195
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au uwezekano hata utendaji wake, ingawa pengine ingekuwa wazo mbaya,

196
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msingi toleo la mfumo wa uendeshaji.

197
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>> Na mimi aliyesema kuhusu yote hii hapa.

198
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Tena, drawable, mbichi, kwa mpangilio, maadili.

199
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defaults, tukienda kwenye Wapendwa Android au Wapendwa CS50 sasa hivi

200
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itakuwa kuangalia tu kama hii.

201
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Itakuwa kusema hello dunia.

202
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Kama unaweza kuona hapa hapa na maandishi Android

203
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Nakala kwa mtazamo huu wa maandishi, ambayo kimsingi ni tu studio,

204
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ni nini tunataka kuwaita kuwa ni katika iOS.

205
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Ina nukuu hii funny @ kamba / hello_world.

206
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Hii ni ili tuweze-sisi kujaribu dondoo zote za masharti,

207
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yote ya masharti ngumu-coded katika Android katika folder tofauti,

208
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ambayo hutokea kwa kuwa katika values.strings.

209
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Kama sisi kuangalia hapa, tunaweza kuona kwamba tuna kamba ngumu-coded kuokolewa hapa

210
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kwa ajili ya dunia hello, na ni kuitwa hujambo dunia, na hii ni aina ya

211
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kawaida kubuni uamuzi katika majukwaa wengi kwamba unataka-

212
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masharti ni aina ya mambo ya kwamba tunataka uwezekano wa kuwa na uwezo wa kubadilika.

213
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Hatutaki kudhibiti F katika faili chanzo chetu kanuni katika XML yetu.

214
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Tunataka kuwa na uwezo wa kubadili hali hii wakati sisi kupata nafasi.

215
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>> Hii faili XML, strings.xml, ni njia ya kuchimba

216
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ngumu-coded masharti ambayo vinginevyo kuwa katika rasilimali zetu mpangilio

217
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au katika chanzo kanuni zetu.

218
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Dhihirisha ni mahali ambapo sisi kuweka hii taarifa muhimu kuhusu maombi.

219
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Ni pamoja na jina mfuko. Kwamba ina kuwa kitambulisho kipekee.

220
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Tofauti na Hifadhi App kwa iOS majina ya maombi

221
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hawana kwa kuwa ya kipekee, na unaweza kwa kweli mabadiliko ya jina la maombi yako

222
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baada ya kuwasilisha yake, hivyo kama mimi kuanza nje na ndege hasira,

223
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na kisha mimi kufanya update, na sitaki kutolewa toleo jipya

224
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Mimi nadhani kuuita Angry Ndege 2 wakati mimi niko kwenye mzunguko huo kutolewa.

225
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Ingekuwa tu show up kama update.

226
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Kitu tu kwamba ina kuwa ya kipekee ni jina hili mfuko,

227
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ambayo si watu wengi kuona.

228
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Naam, utaweza kuona tu kama wewe walikuwa kuangalia chanzo kanuni au kama kuna baadhi ya aina ya makosa.

229
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vipengele ni pamoja na shughuli, hivyo tuna kutangaza

230
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aina yoyote ya shughuli sisi kutumia.

231
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Hii ni aina ruhusa ya kitu.

232
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>> Sababu Android hana hii ukali mchakato wa maombi ya

233
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kwa ajili ya kuwasilisha programu badala yake tu wala kila kitu msingi mbali ya ruhusa

234
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na kutangaza mambo katika Wazi.

235
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Toleo SDK ni muhimu pia.

236
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Tunaweza kuweka matumizi kama kitu SDK kima cha chini cha version.

237
00:16:10,330 --> 00:16:16,010
Ni wazi, unataka kujenga kanuni

238
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na kubuni kwa mifumo ya karibu zaidi uendeshaji.

239
00:16:18,570 --> 00:16:20,840
Pengine si newest, labda si Jelly Bean.

240
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Labda unataka kubuni hasa kwa ajili ya Ice Cream Sandwich,

241
00:16:23,610 --> 00:16:27,120
ingawa ni pretty kiasi sawa katika suala la maamuzi ya kubuni

242
00:16:27,120 --> 00:16:30,550
na maktaba halisi na APIs.

243
00:16:30,550 --> 00:16:36,250
Lakini badala ya kuwa na watu

244
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ya awali Android toleo-kama donut nyuma njia wakati-

245
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ambao bado kutokea kwa kutumia kwamba kujaribu kushusha maombi yako na kisha kusema

246
00:16:43,420 --> 00:16:46,160
haifanyi kazi kwenye simu yangu unaweza kuweka toleo kima cha chini cha

247
00:16:46,160 --> 00:16:48,620
na kuwa ni kuwa Gingerbread au Ice cream Sandwich

248
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au chochote kujisikia kuwasilisha starehe.

249
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Na hii ni mfano wa Wazi. Tunaweza kuangalia moja halisi katika kidogo.

250
00:16:57,170 --> 00:17:00,900
>> Sawa, tutaweza tu kwenda mbele na demo sasa.

251
00:17:00,900 --> 00:17:08,900
Hii ni demo kama wewe Google Android kujenga programu yako ya kwanza au kitu kama hicho.

252
00:17:08,900 --> 00:17:12,089
Tutaweza kwenda kupitia kila kitu kinaendelea huko,

253
00:17:12,089 --> 00:17:17,690
na pole, tu kwa ajili ya kumbukumbu ambao hapa anajua Java kwa kiasi yoyote?

254
00:17:17,690 --> 00:17:28,310
Sawa, hivyo Java ni mpya coding lugha kwa ajili ya watu wengi kuja nje ya CS50.

255
00:17:28,310 --> 00:17:31,850
Kwa ufupi, na kwenda juu tena inasema nini hapa,

256
00:17:31,850 --> 00:17:35,580
nini tunataka kufanya ni badala ya kurekebisha hii hujambo dunia maombi

257
00:17:35,580 --> 00:17:38,620
kwamba wote yake ni kuwa yazindua na inasema dunia hujambo

258
00:17:38,620 --> 00:17:43,580
na anasema hello CS50 saa ya juu kwa sababu hiyo ni jina shughuli

259
00:17:43,580 --> 00:17:47,190
tunakwenda kujaribu kufanya shamba maandishi na kifungo

260
00:17:47,190 --> 00:17:50,680
hivyo kwamba wakati sisi waandishi wa habari kifungo hii itachukua Nakala

261
00:17:50,680 --> 00:17:53,660
kutoka shamba maandishi na kuzindua shughuli mpya, na kusema

262
00:17:53,660 --> 00:17:58,380
chochote Nakala kwamba alisema katika shughuli, na hii ni rahisi.

263
00:17:58,380 --> 00:18:00,650
Ni si ya kuvutia sana. Wewe si unataka kutolewa programu yoyote kama hii.

264
00:18:00,650 --> 00:18:03,880
Lakini inaonyesha baadhi ya mambo ya kubuni muhimu.

265
00:18:03,880 --> 00:18:07,030
>> Tutaweza kuwa na kuingiliana na Dhihirisha, na files layout,

266
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kwa kificho chanzo, na unaweza kuona jinsi ya kuzindua shughuli moja kutoka nyingine.

267
00:18:19,740 --> 00:18:23,060
Tutaweza kuanza na layout kwa ajili ya shughuli yetu ya kwanza,

268
00:18:23,060 --> 00:18:27,320
ambayo najua ni aina ya ndogo,

269
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lakini kama unaweza kuona sasa hivi, yote ni ni ina alama yetu kwamba sisi umba,

270
00:18:32,660 --> 00:18:36,310
jina shughuli, na inasema dunia hodi katika kituo hicho.

271
00:18:36,310 --> 00:18:40,400
Badala yake, mimi nina kwanza kwenda kufanya hii katika mpangilio linear,

272
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mpangilio jamaa, na haya yote ni mambo

273
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unaweza kuangalia juu na ni thamani ya kwenda juu wakati fulani katika suala la Layouts.

274
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Ni mengi kama HTML.

275
00:18:47,310 --> 00:18:52,640
Sisi alisema ni kweli thamani ya kujua katika suala la maana ya programu,

276
00:18:52,640 --> 00:18:55,840
lakini kuna watu wengi tofauti Layouts unaweza kudhibiti,

277
00:18:55,840 --> 00:18:57,970
na ni tu kama CSS katika suala la mitindo.

278
00:18:57,970 --> 00:19:01,590
>> Kuna mengi ya kwenda juu tu katika suala la aesthetics hapa,

279
00:19:01,590 --> 00:19:08,930
na yeah, ni thamani ya kujifunza, lakini ni aina ya kitu unapaswa kuangalia juu

280
00:19:08,930 --> 00:19:11,810
kama wewe kwenda na kujisikia kama unahitaji kitu kipya.

281
00:19:11,810 --> 00:19:17,030
Siwezi kuchukua faida ya baadhi ya zana ADT hapa angalau kuanza mbali na.

282
00:19:17,030 --> 00:19:21,930
Mimi itabidi kufanya shamba maandishi, na nitafanya kifungo.

283
00:19:21,930 --> 00:19:24,100
Kuziweka haki ya karibu na kila mmoja.

284
00:19:24,100 --> 00:19:28,200
Wao tayari resize ipasavyo.

285
00:19:28,200 --> 00:19:31,320
Pole, tena, kuja nyuma ya tofauti kati ya mpangilio linear na mpangilio jamaa,

286
00:19:31,320 --> 00:19:34,830
mpangilio linear anatoa kidogo zaidi ya utendaji

287
00:19:34,830 --> 00:19:38,720
katika suala la kujaza nafasi na kuhakikisha

288
00:19:38,720 --> 00:19:42,790
sisi nafasi ya mambo ya usawa au wima.

289
00:19:42,790 --> 00:19:46,130
tofauti kubwa kati ya mpangilio linear na mpangilio jamaa

290
00:19:46,130 --> 00:19:50,250
ni jamaa mpangilio nafasi kila kitu jamaa na maoni mengine,

291
00:19:50,250 --> 00:19:52,630
na jambo zuri juu yake ni kwamba inachukua muda kidogo kuteka

292
00:19:52,630 --> 00:19:56,120
kwa sababu mfumo wa uendeshaji inaonekana katika kanuni zote na anasema hii inakwenda

293
00:19:56,120 --> 00:19:58,270
jamaa na hii hapa, hapa.

294
00:19:58,270 --> 00:20:03,170
Ina maana inafanya vipimo wachache kuliko rundo zima la Layouts Furushi linear,

295
00:20:03,170 --> 00:20:06,840
ambayo mimi bila kufanya mambo kama nilitaka kwenda wima hapa.

296
00:20:06,840 --> 00:20:10,510
>> Mimi tayari kuwa baadhi ya mambo kwenda usawa, hivyo napenda haja mbalimbali linear mpangilio

297
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kwa kiota yao wima, lakini kama mimi walikuwa kufanya mpangilio jamaa mimi naweza kusema

298
00:20:14,560 --> 00:20:18,140
kuweka hii kwa upande wa kushoto, hii kwa haki na mambo haya hapa chini.

299
00:20:18,140 --> 00:20:21,850
Lakini kwa sababu Mimi nataka wao kujaza hivi sasa mimi naenda kutumia mpangilio linear,

300
00:20:21,850 --> 00:20:24,510
na unaweza kuona ni tayari anafanya mengi ya mambo haya kwa ajili yetu.

301
00:20:24,510 --> 00:20:28,890
Kila maoni haja ya kuwa na mali ya upana na urefu,

302
00:20:28,890 --> 00:20:33,410
na hii hutokea kwa kuwa na uzito wa 1, na hii ina uzito wa 1

303
00:20:33,410 --> 00:20:36,050
hivyo kwamba inajaza nafasi nzima.

304
00:20:36,050 --> 00:20:38,460
Lakini upana na urefu ni muhimu zaidi.

305
00:20:38,460 --> 00:20:45,880
Uwanja huu ID haki hapa si muhimu ndani ya mpangilio halisi

306
00:20:45,880 --> 00:20:49,060
isipokuwa sisi ni kutumia mpangilio jamaa na kusema tunaweza rejea

307
00:20:49,060 --> 00:20:52,990
mtazamo mmoja nafasi katika kumbukumbu ya mwingine.

308
00:20:52,990 --> 00:20:56,170
Kama tungekuwa na mpangilio jamaa tunaweza kusema nafasi hii chini ya hii moja

309
00:20:56,170 --> 00:20:59,390
au juu ya ID hii, lakini ID hii itakuwa muhimu

310
00:20:59,390 --> 00:21:01,660
wakati sisi ni kutumia katika kanuni zetu kwa sababu tunaweza rejea

311
00:21:01,660 --> 00:21:05,610
maoni hayo ya mtu binafsi kwa njia hii.

312
00:21:05,610 --> 00:21:10,350
>> Na kisha unaweza kuona requestFocus tag, ambayo ni kitu pengine aliona katika pset 7.

313
00:21:10,350 --> 00:21:15,370
Kulikuwa na lengo auto tag au kitu pamoja na wale mistari kwa moja ya mashamba.

314
00:21:15,370 --> 00:21:22,100
Na jambo moja, bila shaka, tunaweza kufanya tu kama katika HTML,

315
00:21:22,100 --> 00:21:25,660
na tangazo moja ya mambo mazuri kuhusu ADT ni kwamba autocompletes hapa.

316
00:21:25,660 --> 00:21:29,930
Labda si kama nicely kama ilivyokuwa katika XCode, lakini haina hata hivyo,

317
00:21:29,930 --> 00:21:32,860
na tunaweza kusema ladha na kisha kuwapa baadhi ya aina ya kamba

318
00:21:32,860 --> 00:21:37,070
kama kuandika ujumbe,

319
00:21:37,070 --> 00:21:41,300
na kama kuwapa muda, pia taarifa kwamba mimi kupata kosa kidogo hapa

320
00:21:41,300 --> 00:21:44,610
kusema kwamba tunapaswa kutumia rasilimali kamba kwa ajili hii,

321
00:21:44,610 --> 00:21:48,820
hivyo kama mimi basi ni kufanya baadhi ya kazi ngumu kwa ajili yangu

322
00:21:48,820 --> 00:21:57,320
Naweza kuchagua hii kamba, kufanya refractor Android na dondoo Android kamba.

323
00:21:57,320 --> 00:22:00,570
Naweza kutoa ni kwamba jina, kuandika ujumbe,

324
00:22:00,570 --> 00:22:04,180
na nini ni nini sasa ni nafasi ya ile kamba ngumu-coded

325
00:22:04,180 --> 00:22:07,980
akiwa na kamba katika faili xml. kamba ya,

326
00:22:07,980 --> 00:22:10,200
ambayo ina maana sasa hii ni hapa.

327
00:22:10,200 --> 00:22:15,560
>> Na najua kwamba inaonekana kidogo dogo na kama kazi ya ziada katika hatua hii,

328
00:22:15,560 --> 00:22:17,840
lakini wakati una rundo zima ya mambo, rundo zima la masharti,

329
00:22:17,840 --> 00:22:20,750
kwamba kweli ni muhimu, na hasa kwa ajili ya ujanibishaji

330
00:22:20,750 --> 00:22:26,920
kwa sababu kama nilivyoeleza awali, Android ni sana kutumika kimataifa ya mfumo wa uendeshaji

331
00:22:26,920 --> 00:22:35,950
kwamba unaweza tu kufanya maadili-sw au maadili-sp

332
00:22:35,950 --> 00:22:44,320
au kitu kwa ajili ya lugha ya Kiingereza au Kihispania au nyingine.

333
00:22:44,320 --> 00:22:50,210
Na basi pengine si alikuwa na uzoefu huu bado

334
00:22:50,210 --> 00:22:53,030
tangu sisi hakufanya JavaScript sana katika suala la programu ya mtandao,

335
00:22:53,030 --> 00:22:56,850
lakini pia tunaweza kufanya hili shamba iitwayo onClick kwa kifungo,

336
00:22:56,850 --> 00:23:02,350
na hii ni njia ya referencing ndani ya layout wetu

337
00:23:02,350 --> 00:23:06,570
kwamba tunataka kazi fulani kuitwa katika chanzo kanuni zetu.

338
00:23:06,570 --> 00:23:09,420
Mimi naenda kuwaita hii sendMessage,

339
00:23:09,420 --> 00:23:13,390
na ili kufanya kazi hii ina maana kwamba katika shughuli kuu hapa

340
00:23:13,390 --> 00:23:19,180
Nataka kujenga kazi ambayo ni ya umma

341
00:23:19,180 --> 00:23:22,250
hivyo kwamba inaweza kupatikana kwa mpangilio.

342
00:23:22,250 --> 00:23:25,930
Ni batili kwa sababu wewe tu hawataki kurudi kitu.

343
00:23:25,930 --> 00:23:37,760
Tutaweza kuiita sendMessage, na inachukua mtazamo,

344
00:23:37,760 --> 00:23:43,690
ambayo ni aina ya mazingira kwamba tunaweza nanga njia hii

345
00:23:43,690 --> 00:23:47,160
na kwamba maoni ya mtu binafsi wakati sisi ni mbio.

346
00:23:47,160 --> 00:23:50,090
>> Na mimi sijui kama wewe niliona-vizuri, bila kuwa niliona,

347
00:23:50,090 --> 00:24:02,370
lakini katika hatua hii hapa hapa

348
00:24:02,370 --> 00:24:06,930
mtazamo huu ni aina ya kwamba bado ni pamoja na,

349
00:24:06,930 --> 00:24:10,630
na bila shaka, wote tunajua kutoka CS50 kuhusu si ikiwa ni pamoja na aina.

350
00:24:10,630 --> 00:24:13,120
Jambo zuri Eclipse IDE ya kama ni kwamba

351
00:24:13,120 --> 00:24:17,520
kama wewe kusahau ni pamoja na aina itakuwa kusisitiza na nyekundu kidogo squiggly

352
00:24:17,520 --> 00:24:19,680
na kisha kuwapa fursa ya kuagiza maoni.

353
00:24:19,680 --> 00:24:23,130
njia ya haraka ya kufanya hivyo ni kudhibiti mabadiliko ya O, na itakuwa kuagiza

354
00:24:23,130 --> 00:24:27,070
mafaili yote kwamba inahitaji.

355
00:24:27,070 --> 00:24:33,670
Sasa kwa kuwa tuna hii sendMessage kazi,

356
00:24:33,670 --> 00:24:46,560
ambayo ni kwenda kutuma ujumbe kutoka MainActivity kwa shughuli mpya,

357
00:24:46,560 --> 00:24:55,230
tunakwenda kuwa na matumizi ya dhamira ya kuzindua shughuli mpya kutoka hii moja,

358
00:24:55,230 --> 00:25:02,240
hivyo tutaweza pengine wanataka kujenga mara kwa mara kimataifa au pia hasa mara kwa mara kwa umma

359
00:25:02,240 --> 00:25:06,240
kwamba itatusaidia kujua jinsi sisi ni kwenda rejea kamba

360
00:25:06,240 --> 00:25:09,090
sababu wakati sisi kujenga dhamira sisi siyo tu wito shughuli mpya,

361
00:25:09,090 --> 00:25:11,520
lakini pia tunaweza kuwapa mzigo wa habari.

362
00:25:11,520 --> 00:25:14,720
kifungu ni kweli mfupi kwamba Android anatumia,

363
00:25:14,720 --> 00:25:21,470
na ni njia ya kusema kuwapa data za ziada, ambayo haiwezi kuwa ya aina ya kisasa sana data,

364
00:25:21,470 --> 00:25:24,510
lakini tunaweza dhahiri ni pamoja booleans masharti au au ints.

365
00:25:24,510 --> 00:25:29,750
Kwamba aina ya kitu.

366
00:25:29,750 --> 00:25:34,230
>> Jisikie huru kuuliza kuhusu yoyote ya kufuzu hawa hapa

367
00:25:34,230 --> 00:25:36,900
umma, mwisho, tuli.

368
00:25:36,900 --> 00:25:38,610
Umma ni moja muhimu.

369
00:25:38,610 --> 00:25:47,090
Ina maana kwamba tunaweza kupata hii kutofautiana kutoka nyingine files chanzo kanuni

370
00:25:47,090 --> 00:25:49,590
kama vile wakati sisi kujenga shughuli mpya.

371
00:25:49,590 --> 00:25:52,190
Tunaweza rejea kamba ndani ya faili hili.

372
00:25:52,190 --> 00:25:57,160
Kama ni binafsi, ina maana ni mdogo na faili hii ya mtu binafsi hapa.

373
00:25:57,160 --> 00:26:02,430
Lakini tutaweza kuita hii kitu kama ujumbe wa ziada.

374
00:26:16,260 --> 00:26:23,300
Sasa tumefanya kazi hii, na kama sisi bonyeza kifungo, kazi hii itakuwa ya kuitwa.

375
00:26:23,300 --> 00:26:27,970
Lakini hatujafanya kitu, ni wazi, na kazi ya.

376
00:26:27,970 --> 00:26:33,130
Nini tunataka kufanya sasa ni kujenga shughuli mpya,

377
00:26:33,130 --> 00:26:35,350
shughuli ambayo itakuwa kweli kuzinduliwa.

378
00:26:35,350 --> 00:26:44,330
Katika Eclipse tunaweza kusema mpya, free shughuli, tupu shughuli.

379
00:26:44,330 --> 00:26:46,530
Tunaweza kuwapa jina.

380
00:26:46,530 --> 00:26:57,050
Hebu kuiita matokeo yetu ya shughuli.

381
00:26:57,050 --> 00:27:04,430
Na kisha hii kihierarkia mzazi shamba ni njia ya kubainisha

382
00:27:04,430 --> 00:27:08,180
jinsi shughuli ni kuhusiana na kila mmoja.

383
00:27:08,180 --> 00:27:11,020
Kwa sababu moja hii itakuwa ilizindua kutoka shughuli nyingine

384
00:27:11,020 --> 00:27:27,520
tunapaswa bayana kwamba ina mzazi shughuli kuu.

385
00:27:27,520 --> 00:27:31,220
>> Na mimi naweza kuwa clicked kwenye uwanja ijayo huko, ambayo ingekuwa alituambia

386
00:27:31,220 --> 00:27:33,830
baadhi ya mashamba ya hiari kwamba pia ikiwa ni pamoja na,

387
00:27:33,830 --> 00:27:38,800
lakini jambo zuri ADT, tena, ni kwamba kama mimi kitabu hapa chini

388
00:27:38,800 --> 00:27:45,740
Dhihirisha katika kukumbuka kwamba wote wa kweli hii ilikuwa ni pamoja na default

389
00:27:45,740 --> 00:27:48,930
wakati sisi awali iliundwa mradi,

390
00:27:48,930 --> 00:27:53,090
na sasa kwa sababu sisi kutumika hii kuunda shughuli mpya badala ya

391
00:27:53,090 --> 00:27:58,610
akiongeza darasa yetu mwenyewe faili sababu sisi akaenda kwa njia ya GUI yao kwa ajili ya kufanya hii

392
00:27:58,610 --> 00:28:01,930
tayari aliongeza yote haya kwa Wazi kwa ajili yetu,

393
00:28:01,930 --> 00:28:06,020
ambayo ina maana kwamba sasa mfumo wa uendeshaji itakuwa si kulalamika

394
00:28:06,020 --> 00:28:09,400
wakati sisi kujaribu kuzindua shughuli hii.

395
00:28:09,400 --> 00:28:14,620
Na pia, bila shaka, akampa studio, ambayo pia inaonyesha juu katika masharti.

396
00:28:14,620 --> 00:28:17,340
Ni gani mambo mengi juu ya mwisho ya nyuma kwa ajili yetu.

397
00:28:17,340 --> 00:28:20,140
Anyway, sasa kwamba tuna shughuli hii matokeo kama vile,

398
00:28:20,140 --> 00:28:23,810
halisi chanzo kanuni faili kwenye folda chanzo,

399
00:28:23,810 --> 00:28:33,540
na unaweza kuona-kwa ufupi juu ya kugusa hii-

400
00:28:33,540 --> 00:28:37,790
kwa sababu sisi habari kuhusu mzazi hii kihierarkia

401
00:28:37,790 --> 00:28:46,640
alitoa hii android.r.ide.home shamba katika jambo hili onOption kuchaguliwa.

402
00:28:46,640 --> 00:28:49,020
>> Nini hii ni kimsingi akisema ni kuna kifungo cha orodha sasa

403
00:28:49,020 --> 00:28:53,110
kwamba katika kona ya kushoto ya juu ya screen

404
00:28:53,110 --> 00:29:02,220
kama mimi kwenda nyuma ya PowerPoint ambapo sisi kwanza aliyesema kuhusu bar hatua

405
00:29:02,220 --> 00:29:05,380
sababu ya mzazi kihierarkia sasa kuna mshale kidogo nyuma hapa

406
00:29:05,380 --> 00:29:10,610
na hii ni clickable hivyo tunapaswa kuwa na uwezo wa-baada ya sisi kweli kuendesha programu hii-

407
00:29:10,610 --> 00:29:15,360
kurudi nyuma, na ni njia ya kutuokoa kidogo ya kanuni ya huko.

408
00:29:26,220 --> 00:29:40,180
Sasa ndani ya hii-vizuri, inaonekana kuwa kulalamika kuhusu kwamba kwa sasa.

409
00:29:40,180 --> 00:29:43,910
Hebu maoni kwamba nje.

410
00:29:43,910 --> 00:29:48,260
Sasa, ili kweli kuingiliana na shughuli hizi 2,

411
00:29:48,260 --> 00:29:55,020
inatubidi kujenga dhamira ambayo ni pamoja na yote ya takwimu hii.

412
00:29:55,020 --> 00:29:58,950
Katika sendMessage sasa mimi naenda cruise kupitia bits baadhi ya kanuni

413
00:29:58,950 --> 00:30:00,700
na kueleza kuwa kama mimi kwenda.

414
00:30:00,700 --> 00:30:06,280
dhamira, kama nilivyosema, ni njia ya kuzindua shughuli moja kutoka nyingine.

415
00:30:06,280 --> 00:30:10,000
Nia ni aina. Sisi ni kujenga myIntent kutofautiana.

416
00:30:10,000 --> 00:30:13,980
>> Na hii ni kweli ni kitu, ambayo ni kwa nini tuna kuwaita mpya.

417
00:30:13,980 --> 00:30:18,500
Ni kawaida Java matumizi ya huko, ambayo inaweza kuchukua kidogo kidogo ya kupata kutumika.

418
00:30:18,500 --> 00:30:23,900
Hii ina maana sisi ni kutumia shughuli au MainActivity darasa,

419
00:30:23,900 --> 00:30:28,630
na dhamira katika njia ambayo inachukua shughuli itakuja kutoka

420
00:30:28,630 --> 00:30:36,060
na shughuli ni kwenda, ambayo tunaita ResultActivity,

421
00:30:36,060 --> 00:30:38,170
na kwamba ni darasa yake mwenyewe.

422
00:30:38,170 --> 00:30:41,720
Ni pamoja na kwamba.

423
00:30:41,720 --> 00:30:47,370
Na kisha kama nilivyoeleza hapo awali, sisi alitoa kwamba ID kwa shamba Nakala hariri

424
00:30:47,370 --> 00:30:53,710
na mtazamo wa maandishi, hivyo ili programmatically kukamata

425
00:30:53,710 --> 00:31:01,860
Nakala kwamba ipo katika editText

426
00:31:01,860 --> 00:31:06,710
sisi kutumia kazi kuitwa findViewByID,

427
00:31:06,710 --> 00:31:13,660
ambayo ni sawa na kitu ambacho utasikia kutumia wakati akijaribu kupata mashamba kutoka DOM.

428
00:31:13,660 --> 00:31:17,560
Labda Daudi mazungumzo kuhusu hili katika hotuba.

429
00:31:17,560 --> 00:31:26,600
Lakini ni njia tu ya kupata wale-kwamba ni kwa nini sisi tag mambo haya pamoja na mashamba hayo.

430
00:31:26,600 --> 00:31:31,110
Id.editText1.

431
00:31:31,110 --> 00:31:35,220
Ni tayari autocompleting kwa ajili yangu huko.

432
00:31:35,220 --> 00:31:42,010
>> Na kisha tutaweza pia ni pamoja na-hii editText sasa kwamba tuna shamba

433
00:31:42,010 --> 00:31:47,640
ndani ya mpango wetu, kwamba findViewByID wote alifanya alikuwa kimsingi

434
00:31:47,640 --> 00:31:50,870
unaweza kufikiria kama kutupa kumbukumbu editText kwamba.

435
00:31:50,870 --> 00:31:54,570
Sasa tunataka kupata kamba au ujumbe

436
00:31:54,570 --> 00:32:00,670
ndani kwamba editText ambayo tunaweza kufanya kwa kutumia-

437
00:32:00,670 --> 00:32:03,360
unaweza kufikiria editText kama struct-

438
00:32:03,360 --> 00:32:07,600
sisi kuiita kitu katika Java-na rundo zima la mbinu mbalimbali

439
00:32:07,600 --> 00:32:10,650
au mashamba na sifa masharti hayo.

440
00:32:10,650 --> 00:32:15,510
Wakati mimi kusema editText. ni inatoa nafasi yangu ya kupata

441
00:32:15,510 --> 00:32:19,770
Njia kama vile getText, ambayo kupata Nakala sasa

442
00:32:19,770 --> 00:32:23,990
katika editText kuwa na kisha kubadili kwamba waziwazi

443
00:32:23,990 --> 00:32:26,520
kwa kamba, na sisi kuokolewa ujumbe.

444
00:32:26,520 --> 00:32:32,730
Sasa sisi kweli unataka kufanya kitu na kwamba nia ya sisi aliumba tu wakati iliyopita.

445
00:32:32,730 --> 00:32:40,250
Nitaweka ziada kama ni kuitwa katika dhamira,

446
00:32:40,250 --> 00:32:43,330
ambayo, tena, kama nilivyosema kabla, hii ni njia ya kujenga kifungu

447
00:32:43,330 --> 00:32:45,980
pamoja na kundi zima la data.

448
00:32:45,980 --> 00:32:50,920
Ujumbe wa ziada ni tag yetu ili sisi kujua sisi ni kuokoa hii chini,

449
00:32:50,920 --> 00:32:56,700
na basi mimi nina ikiwa ni pamoja na ujumbe.

450
00:32:56,700 --> 00:33:04,870
>> Na kisha tunaweza kweli kuanza shughuli kwa kutoa ni myIntent parameter.

451
00:33:04,870 --> 00:33:10,630
Na hii itakuwa kweli kuzindua shughuli, hivyo sasa tangu mimi uppdaterade Windows 8

452
00:33:10,630 --> 00:33:15,870
huenda kuna baadhi ya makosa ambayo show up kwa ufupi, lakini jaribu kupuuza yao.

453
00:33:28,010 --> 00:33:30,310
Na hii ni emulator free.

454
00:33:30,310 --> 00:33:33,540
Hopefully kanuni kweli pop up katika wakati huu.

455
00:33:33,540 --> 00:33:36,680
Tena, na kupuuza mambo hayo yote kidogo.

456
00:33:36,680 --> 00:33:42,290
Lakini emulator Android unaweza kuiga toleo yoyote ya mfumo wa uendeshaji

457
00:33:42,290 --> 00:33:45,180
kutoka ndio mwanzo, donut, Gingerbread.

458
00:33:45,180 --> 00:33:49,640
Hii ni Jelly Bean 4.1.

459
00:33:49,640 --> 00:33:53,150
Lakini kama unaweza kuona hivi sasa, hii ni kitu sisi alifanya.

460
00:33:53,150 --> 00:33:55,780
Hii ina MainActivity, editText, kifungo.

461
00:33:55,780 --> 00:34:01,550
Siwezi aina kitu hapa, lakini ni sisi kukosa katika hatua hii?

462
00:34:01,550 --> 00:34:05,190
Tukiwa na shamba katika MainActivity kwamba kinaendelea kutuma ujumbe

463
00:34:05,190 --> 00:34:08,570
na shughuli nyingine, lakini katika hatua hii

464
00:34:08,570 --> 00:34:12,330
hatujafanya kitu katika shughuli nyingine, hivyo si kwenda kupokea kitu chochote.

465
00:34:12,330 --> 00:34:18,800
Hebu kumaliza up kwamba sehemu kabla ya sisi kuondoka.

466
00:34:18,800 --> 00:34:25,760
>> Shughuli hii matokeo, nini tutaweza haja ya kufanya ni tutaweza haja ya kufanya ni tutaweza haja ya-

467
00:34:25,760 --> 00:34:30,070
tunaweza pia rejea dhamira ndani ya shughuli hii,

468
00:34:30,070 --> 00:34:33,580
hivyo tuna kukamata dhamira, ambayo ni kweli rahisi.

469
00:34:33,580 --> 00:34:40,780
Ni kazi pamoja katika darasa shughuli,

470
00:34:40,780 --> 00:34:47,610
hivyo tunaweza tu kusema "Kupata ujumbe kutoka kwa dhamira."

471
00:34:47,610 --> 00:34:56,260
"Dhamira myIntent = getIntent."

472
00:34:56,260 --> 00:35:00,030
Na hii itatupa-sasa myIntent ni kitu,

473
00:35:00,030 --> 00:35:05,380
ambayo ni kumbukumbu ya dhamira ya kwamba imesababisha sisi shughuli hii.

474
00:35:05,380 --> 00:35:10,130
MainActivity wito na anatoa maelezo ya ziada na kusababisha shughuli.

475
00:35:10,130 --> 00:35:14,070
Matokeo ya shughuli sasa inaonekana katika dhamira ambayo imesababisha hapa,

476
00:35:14,070 --> 00:35:23,540
na tunaweza kupata ujumbe kwamba sisi aliumba katika moja nyingine,

477
00:35:23,540 --> 00:35:26,370
getStringExtra, na hii mapenzi autocomplete kwa ajili yangu.

478
00:35:26,370 --> 00:35:31,190
Na kisha kumbuka, njia ya sisi tagged kwamba kidogo ya data

479
00:35:31,190 --> 00:35:38,400
mara kwa kutoa ni uwanja huu haki hapa, hii kamba ya umma,

480
00:35:38,400 --> 00:35:42,080
ambayo ni tag kwa kamba sisi kweli pamoja.

481
00:35:42,080 --> 00:35:48,450
>> Kama mimi kusema MainActivity.Extra_Message

482
00:35:48,450 --> 00:35:52,200
ni haki pale, na hii ni aina ya kama jina parameter

483
00:35:52,200 --> 00:35:55,330
wakati sisi kupita kanuni kutoka mtawala template,

484
00:35:55,330 --> 00:35:57,680
wakati tunatarajia kusema cheo mshale kitu.

485
00:35:57,680 --> 00:36:01,140
Ni aina moja ya wazo huko.

486
00:36:01,140 --> 00:36:07,130
Sasa, kumbuka hii.

487
00:36:07,130 --> 00:36:12,230
Sisi pia alikuwa auto hii kuundwa au auto yanayotokana kanuni

488
00:36:12,230 --> 00:36:16,410
kwa ajili ya shughuli matokeo, ambayo ni pamoja na maoni ya maandishi katikati

489
00:36:16,410 --> 00:36:19,690
kwamba anasema dunia hello.

490
00:36:19,690 --> 00:36:27,510
Sisi inaweza uwezekano wa kufanya kubwa.

491
00:36:27,510 --> 00:36:33,980
Hebu kufanya hivyo kwanza.

492
00:36:33,980 --> 00:36:39,550
Tunaweza kufanya hivyo 40 wiani huru saizi.

493
00:36:39,550 --> 00:36:42,670
Hebu angalia, kwamba ni super kubwa. Kwamba itakuwa sawa.

494
00:36:42,670 --> 00:36:48,180
Na kisha ili kumbukumbu hii ya mtu binafsi Nakala maoni ndani ya kanuni zetu

495
00:36:48,180 --> 00:36:53,890
tutaweza haja ya kuwapa kitambulisho,

496
00:36:53,890 --> 00:36:58,350
na ili kufanya hivyo tunasema @ + id, ambayo ina maana sisi hawawajui ID.

497
00:36:58,350 --> 00:37:02,480
Kama sisi tu alisema @ id ingekuwa kudhani sisi ni referencing ID kwamba tayari ipo,

498
00:37:02,480 --> 00:37:07,760
na hebu simu hii resultTextView yetu.

499
00:37:07,760 --> 00:37:10,570
Na taarifa kwamba katika XML hakuna haja kwa semicolons au kitu chochote.

500
00:37:10,570 --> 00:37:12,380
Kila kitu ni ndani ya vitambulisho hivi.

501
00:37:12,380 --> 00:37:15,530
Ni sawa na HTML katika mengi ya akili.

502
00:37:15,530 --> 00:37:22,760
>> Inachukua kidogo ya kupata kutumika, lakini hatimaye utasikia kujisikia pretty vizuri na hayo.

503
00:37:22,760 --> 00:37:31,320
Hebu update Nakala kwa mtazamo matokeo yetu ya maandishi,

504
00:37:31,320 --> 00:37:35,650
na kama tulivyofanya tulipokuwa kupata kwamba Nakala hariri shamba katika shughuli zetu nyingine

505
00:37:35,650 --> 00:37:46,630
katika MainActivity hapa sisi pia vivyo hivyo-

506
00:37:46,630 --> 00:37:54,890
tutaweza kupata maoni na ID.

507
00:37:54,890 --> 00:37:59,640
Na R, katika kesi Mimi si kutaja hili kabla, ni kumbukumbu folder rasilimali zetu,

508
00:37:59,640 --> 00:38:05,350
na kisha ID ni kumbukumbu ya kila kitu katika folder rasilimali, Vitambulisho vya wote,

509
00:38:05,350 --> 00:38:10,060
na resultTextView.

510
00:38:10,060 --> 00:38:13,010
Na tu kama kabla, resultTextView ni kitu,

511
00:38:13,010 --> 00:38:15,780
maana yake ina hizi mali yote yanayohusiana na hayo.

512
00:38:15,780 --> 00:38:20,610
Wakati sisi kutumia getText kwa ajili ya maandishi hariri kwa ajili ya hii shamba maandishi au mtazamo Nakala

513
00:38:20,610 --> 00:38:23,980
tunaweza kweli kutumia setText,

514
00:38:23,980 --> 00:38:26,960
na kisha sisi tayari kupatikana ujumbe kutoka kwa dhamira,

515
00:38:26,960 --> 00:38:35,760
hivyo naweza kusema ujumbe, na hii itakuwa kweli kuweka ujumbe.

516
00:38:35,760 --> 00:38:41,820
>> Ni kuchukua wakati wa uzinduzi, na kisha tunaweza kuona kama au ni shambulio,

517
00:38:41,820 --> 00:38:48,670
lakini maswali yoyote kuhusu mchakato kwamba haki pale, kwamba aina ya mahusiano?

518
00:38:48,670 --> 00:38:51,490
Kwa njia nyingi ni moja kwa moja.

519
00:38:51,490 --> 00:38:53,960
sababu mimi naenda kwa njia ya kitu rahisi kiasi

520
00:38:53,960 --> 00:38:57,330
ni, tena, kwa sababu wewe kupata kuona mwingiliano kati ya layout,

521
00:38:57,330 --> 00:38:59,520
kanuni ya chanzo, jinsi rejea mambo

522
00:38:59,520 --> 00:39:07,680
na labda kupata mfiduo kidogo jinsi Java kazi huko.

523
00:39:07,680 --> 00:39:16,500
Kama mimi kwa kweli aina kitu katika hapa, kama ohai, na kisha mimi bonyeza kifungo,

524
00:39:16,500 --> 00:39:22,260
ni lanserar shughuli mpya, na kwamba mtazamo Nakala anasema ohai.

525
00:39:22,260 --> 00:39:27,640
Hiyo ni rahisi sana, lakini hopefully baada ya mfano kwamba

526
00:39:27,640 --> 00:39:32,310
wewe aina ya kuona jinsi mwingiliano hii kazi, na sasa kwamba fujo ya mafaili

527
00:39:32,310 --> 00:39:36,870
upande wa kushoto kwa ajili ya haya folders kila mradi, hopefully unajua ambapo kuangalia sasa.

528
00:39:36,870 --> 00:39:38,700
Hii ni chanzo yako ya eneo.

529
00:39:38,700 --> 00:39:41,760
>> Layout ni kweli jambo tu utasikia kuhusika na hata wewe ni pamoja na picha

530
00:39:41,760 --> 00:39:46,370
na drawables au chochote, na maadili, ambayo ni pamoja na masharti,

531
00:39:46,370 --> 00:39:51,960
kama sisi zilizotajwa, na kisha mitindo ni kitu ambacho aina ya kama CSS.

532
00:39:51,960 --> 00:39:56,410
Kulishughulikia wakati unataka, lakini mpaka kujisikia vizuri na kuongeza Flair ziada

533
00:39:56,410 --> 00:40:02,520
kwa maombi yako hakuna haja ya kuwa na wasiwasi juu sana.

534
00:40:02,520 --> 00:40:07,410
Tu wa kufuta jambo moja nyingine utakuwa dhahiri wanataka ni pamoja na-

535
00:40:07,410 --> 00:40:13,010
kuchukua unataka kuunganisha makala ya baridi na kujiokoa baadhi ya ziada coding-

536
00:40:13,010 --> 00:40:16,460
itakuwa ni maktaba chama 3.

537
00:40:16,460 --> 00:40:19,840
Hapa ni kidogo Android guy na Sherlock Holmes kofia.

538
00:40:19,840 --> 00:40:23,040
Hii ni hatua bar Sherlock maktaba,

539
00:40:23,040 --> 00:40:25,390
ambayo kimsingi ina maana kwamba bar hatua wewe aliona mapema,

540
00:40:25,390 --> 00:40:29,590
ambayo sasa ni ya kiwango katika Sandwich Ice cream na Jelly Bean,

541
00:40:29,590 --> 00:40:33,100
kama unataka kuleta kwamba aina ya uzoefu wa mtumiaji kwa watumiaji juu ya matoleo ya zamani

542
00:40:33,100 --> 00:40:39,290
na kujiokoa kutoka hofu juu ya jinsi ya mtumiaji ni kwenda navigate

543
00:40:39,290 --> 00:40:42,490
juu ya matoleo ya zamani wakati kitu ambacho si huko unaweza ni pamoja na hii maktaba

544
00:40:42,490 --> 00:40:46,770
na kisha wewe tu na kumbukumbu-badala ya Android default

545
00:40:46,770 --> 00:40:50,250
maktaba kwa ajili ya bar hatua, wewe rejea hii maktaba ya msaada.

546
00:40:50,250 --> 00:40:53,090
>> Mambo kama Scoreloop, ni kubwa kama wewe ni kwenda kwa pamoja na mchezo.

547
00:40:53,090 --> 00:40:57,280
Ni inakuwezesha kuongeza bodi kiongozi na mafanikio ya michezo.

548
00:40:57,280 --> 00:41:00,900
Admob ni njia ya kuweka matangazo katika maombi yako

549
00:41:00,900 --> 00:41:02,900
katika kesi unataka kufanya pesa kidogo mbali ya hilo.

550
00:41:02,900 --> 00:41:05,730
Bila shaka, kuna kuungana na Twitter kwa kuunganisha huko

551
00:41:05,730 --> 00:41:08,170
kama unataka kushiriki mambo kwa urahisi, nakadhalika.

552
00:41:08,170 --> 00:41:15,120
Dropbox, vivyo hivyo, na taaluma ya Google ni kwamba chati kuangalia moja huko.

553
00:41:15,120 --> 00:41:19,070
Kwamba itakuwa muhimu sana kama kweli wanataka kuona ambaye ni mazungumzo

554
00:41:19,070 --> 00:41:25,800
na programu yako au ni nani, jinsi wao kiutendaji, nakadhalika.

555
00:41:25,800 --> 00:41:30,650
Google, na msingi, anakwambia mengi ya takwimu kuhusu ambaye imewekwa programu yako

556
00:41:30,650 --> 00:41:35,020
na kile Simu za wana, nini mfumo wa uendeshaji matoleo wao.

557
00:41:35,020 --> 00:41:38,080
Lakini kama unataka kuona ambaye ni kutumia juu ya kila siku na jinsi ya kuitumia

558
00:41:38,080 --> 00:41:42,860
basi utasikia wanataka ni pamoja na baadhi ya aina ya mfumo wa kufuatilia kama hiyo.

559
00:41:42,860 --> 00:41:44,990
>> Wakati uko tayari kusambaza programu yako

560
00:41:44,990 --> 00:41:46,930
Sina haja ya kwenda katika kwamba kwa kina sana.

561
00:41:46,930 --> 00:41:49,090
Bonyeza kiungo hapa, Google kucheza.

562
00:41:49,090 --> 00:41:51,080
Ni kutumika kuwa soko free.

563
00:41:51,080 --> 00:41:53,470
Wao rebranded kila kitu pamoja na michezo ya Google,

564
00:41:53,470 --> 00:41:55,230
hivyo sasa kuwasilisha kwamba.

565
00:41:55,230 --> 00:41:57,140
Ni rahisi sana.

566
00:41:57,140 --> 00:42:01,070
Una pamoja na maelezo, baadhi ya viwambo.

567
00:42:01,070 --> 00:42:05,660
Kama nilivyosema, hakuna mchakato wa kupitishwa kama iOS.

568
00:42:05,660 --> 00:42:07,270
Na wapi kwenda kutoka hapa?

569
00:42:07,270 --> 00:42:09,450
Mimi ilionyesha mfano wewe kweli rahisi.

570
00:42:09,450 --> 00:42:13,270
Hopefully kama inaonekana sana rahisi

571
00:42:13,270 --> 00:42:15,740
basi kwamba pengine dalili nzuri.

572
00:42:15,740 --> 00:42:20,080
Kama wewe wakati wote waliona kidogo kuchanganyikiwa au uhakika kuhusu hasa ni nini nilikuwa kuandika

573
00:42:20,080 --> 00:42:26,160
hilo pia ni mzuri, lakini kutoka hapa kwenda Guides Google.

574
00:42:26,160 --> 00:42:28,330
Hii ni sehemu kubwa ya kuanza.

575
00:42:28,330 --> 00:42:31,460
Itakuwa majadiliano yenu kupitia kile wanatarajia katika suala la kubuni maombi,

576
00:42:31,460 --> 00:42:33,380
jinsi watumiaji kawaida kiutendaji na hivyo.

577
00:42:33,380 --> 00:42:36,450
Ni zaidi fomu bure kuliko iOS, ningependa kusema,

578
00:42:36,450 --> 00:42:41,330
ambayo inaonekana kama meza maoni ni-sijui, kwamba ni mkate wao na siagi.

579
00:42:41,330 --> 00:42:44,690
Kila kitu ni maoni meza sliding juu na chini.

580
00:42:44,690 --> 00:42:48,160
Na Android wao dhahiri kuhamasisha watu kuangalia ni kutoka

581
00:42:48,160 --> 00:42:51,720
kundi zima la mitazamo tofauti.

582
00:42:51,720 --> 00:42:56,000
>> Wakati wewe ni pamoja na programu ya maendeleo kit katika ADT hii

583
00:42:56,000 --> 00:43:03,010
na default una rundo zima la miradi katika sampuli free.

584
00:43:03,010 --> 00:43:05,470
Haki hapa, Android, free Mfano wa Mradi.

585
00:43:05,470 --> 00:43:11,870
Kama mimi bonyeza kwamba, naweza kuchagua toleo kwa ajili ya ambayo ya sampuli miradi kuomba.

586
00:43:11,870 --> 00:43:13,300
Kuna rundo zima ya mambo mbalimbali hapa.

587
00:43:13,300 --> 00:43:16,690
Ni kuanza mbali na hatua utangamano bar,

588
00:43:16,690 --> 00:43:24,610
accelerometer kucheza, Backup na kurejesha, Bluetooth, wajenzi ishara.

589
00:43:24,610 --> 00:43:28,930
JetBoy ni mchezo sampuli wao kukupa, kama ni LunarLander.

590
00:43:28,930 --> 00:43:31,250
Kuna rundo zima la maombi ya sampuli hapa,

591
00:43:31,250 --> 00:43:35,290
na wao ni wote walengwa katika masuala mbalimbali ya API Android,

592
00:43:35,290 --> 00:43:41,520
na wazo ni kwamba kama wewe kufanya maombi yako

593
00:43:41,520 --> 00:43:44,110
huna haja ya kujifunza kila kitu kuhusu Android kufanya programu free.

594
00:43:44,110 --> 00:43:47,300
Wewe tu na kujifunza kuhusu sehemu kwamba wewe ni kweli kwenda kutumia.

595
00:43:47,300 --> 00:43:49,340
Angalia katika maktaba hizi sampuli.

596
00:43:49,340 --> 00:43:51,510
Kujisikia huru na nakala na kuweka kanuni na reapply yake.

597
00:43:51,510 --> 00:43:53,850
Ni jambo kubwa kwa kuangalia kanuni ngumu zaidi

598
00:43:53,850 --> 00:43:57,060
na kujaribu kuelewa, ambayo ni ya kweli kwa nini katika CS50

599
00:43:57,060 --> 00:44:01,510
sisi mara nyingi kutoa kiasi kikubwa cha kanuni ya chanzo.

600
00:44:01,510 --> 00:44:04,620
Angalia katika baadhi ya hizi kama wewe ni kwenda kutumia maktaba sawa

601
00:44:04,620 --> 00:44:08,630
na kisha kuyatumia katika kanuni yako mwenyewe.

602
00:44:08,630 --> 00:44:10,430
Na bila shaka, kuna tutorials.

603
00:44:10,430 --> 00:44:12,690
Kutafuta tutorials.

604
00:44:12,690 --> 00:44:17,020
Nimeona mengi ya watu wema online ambayo unaweza kuleta hadi kasi

605
00:44:17,020 --> 00:44:20,080
na kile vipande kweli ni na jinsi unavyoweza kuzitumia.

606
00:44:20,080 --> 00:44:22,240
>> Baadhi ya mambo haya mpya kubuni, kama vipande,

607
00:44:22,240 --> 00:44:26,840
wewe kweli hawana kuwa na wasiwasi kuhusu isipokuwa wewe ni kufanya

608
00:44:26,840 --> 00:44:30,560
pretty kubwa katika mradi wa upeo.

609
00:44:30,560 --> 00:44:32,510
Wao ni mambo ambayo Google ni kujaribu awamu in

610
00:44:32,510 --> 00:44:35,570
Stackoverflow ni mwendo wa rafiki yako.

611
00:44:35,570 --> 00:44:37,930
Hopefully mimi kuuzwa wewe kidogo juu ya Android,

612
00:44:37,930 --> 00:44:41,640
kutambua ni zaidi rahisi mbinu katika suala la lugha tu coding.

613
00:44:41,640 --> 00:44:45,970
Java ni ningesema rahisi kuelewa kuliko Lengo-C.

614
00:44:45,970 --> 00:44:50,780
Admin ni kuongezeka nadhani zaidi ya iOS.

615
00:44:50,780 --> 00:44:54,890
I mean, data ni huko pia, mbali na nini nadhani.

616
00:44:54,890 --> 00:44:56,920
Ni kwenda kuwa karibu kwa muda,

617
00:44:56,920 --> 00:45:00,880
na wao ni miaka michache nyuma katika suala la mizunguko yao ya kubuni,

618
00:45:00,880 --> 00:45:04,690
hivyo ni aina ya kueleweka kwamba wao bado uko kufanya kazi kupitia baadhi ya haya

619
00:45:04,690 --> 00:45:09,080
uthabiti maswali, kama bar hatua hii ni kitu kipya kwa ajili yao bado,

620
00:45:09,080 --> 00:45:16,010
aina ya kujenga sawa user uzoefu katika programu zao zote.

621
00:45:16,010 --> 00:45:20,650
Hopefully unaweza kwenda mbele sasa na kufungua Eclipse

622
00:45:20,650 --> 00:45:22,870
na kufanya programu yako mwenyewe free.

623
00:45:22,870 --> 00:45:30,240
>> Je, mtu yeyote kuwa na maswali yoyote kabla ya sisi wrap up juu ya kitu chochote?

624
00:45:30,240 --> 00:45:34,410
Naweza kukuambia jibu ni 42.

625
00:45:34,410 --> 00:45:41,990
Naam, furaha coding kila mtu, na bahati nzuri.

626
00:45:41,990 --> 00:45:44,990
[CS50.TV]