What's new in Jetpack 2021

Google I/O Extended 행사에서 발표한 자료 통합본입니다.
- Double S: https://sites.google.com/view/ioext-doubles
- Korea Android: https://gdg.community.dev/events/details/google-gdg-korea-android-presents-google-io-extended-2021-korea-android/

Transcript

1. Android
   1
   What’s New
   
   in Jetpack
   Sungyong An
   
   Android Developer, NAVER WEBTOON
   

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2. What’s new in Jetpack | Session Jetpack | Q&A
   발표내용은 위에 명시된 2021년도
   Google I/O 영상을 기반으로 준비했습니다.
   2
   

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3. 3
   02 Stable
   01 Jetpack & Versioning
   04 Additional Talks
   03 Alpha & Beta
   

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4. android
   
   jetpack
   Jetpack은 모든 Android 버전과 기기에서 일관된 코드
   를 작성하여, 개발자가 보다 중요한 코드에 집중할 수 있
   도록 도와주는 라이브러리 모음입니다.
   4
   

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5. Timeline
   2011
   Android
   
   Support
   
   Library
   2016
   Constraint
   
   Layout
   2015
   Data
   
   Binding
   2017
   Architecture
   
   Components
   Lifecycle
   ViewModel
   LiveData
   Room
   Kotlin
   2019
   Kotlin first!
   Security
   ViewPager2
   CameraX
   Benchmark
   2018
   Android
   
   Jetpack
   KTX
   Navigation
   WorkManager
   SavedState
   Paging
   2020
   ViewBinding
   Compose
   Startup
   DataStore
   Window
   Hilt
   2021
   Macrobenchmark
   AppSearch
   Wear Tile
   Emoji2
   5
   

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6. TOP 1,000 জ ઺
   
   non-core Jetpack ۄ੉࠳۞ܻܳ 2ѐ ੉࢚ ࢎਊೞח ࠺ਯ
   47%
   2020
   79%
   2021
   6
   

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7. alpha, beta
   ୹द ੹੄ ઱ӝ৬
   
   ѐߊ੗ীѱ যڃ ੄޷ੋ૑ ঌইࠇפ׮
   Versioning
   7
   

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8. 8
   ѐߊ ૓೯ ઺ੋ ۄ੉࠳۞ܻ۽
   
   APIо ୶о, ߸҃غѢա ࢏ઁؼ ࣻ ੓णפ׮.
   
   ߡӒо ੓ਸ ࣻب ੓૑݅
   
   ӝࠄ੸ਵ۽ח Ѩૐغযࢲ ੜ ز੘೤פ׮.
   Alpha
   ӝמ੉ উ੿ചػ ۄ੉࠳۞ܻੑפ׮.
   
   ੉੹ীח Beta ױ҅ীࢲ
   
   APIо ߸҃غ૑ ঋח Ѫ੉ ਗ஗੉঻૑݅,
   
   ੉ઁח बпೠ ޙઁо ߊࢤೞѢա
   
   ഑਷ ழޭפ౭ ೖ٘ߔী ٮۄࢲ
   
   APIо ߸҃ؼ ࣻ ੓׮Ҋ ೤פ׮.
   Beta
   

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9. Q RC৬ Betaח যڃ ର੉о ੓աਃ?
   ৘੹ী Support Libraryীࢲח RC ױ҅о হ঻णפ׮.
   
   ੉ ҃਋, ߡӒܳ ࣻ੿ೞݶ ߈٘द ಁ஖ ܾܻૉܳ ೧ঠೞҊ,
   
   ୭न ߡ੹੉ ҅ࣘ ৢۄт ࣻ ੓णפ׮.
   
   RC ױ҅ীࢲח ߡӒо ࣻ੿غݶ RC ߡ੹݅ ৢܻҊ,
   
   ୭न ߡ੹ীח ৔ೱ੉ হणפ׮.
   A
   ( * ੄৉੉ ੓ਸ ࣻ ੓णפ׮ )
   9
   

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10. androidx.annotation:annotation-experimental
    STABLE
    بҳ ߂ ׮ܲ ѐߊ੗о ௏٘ܳ ੉೧ೞחؘ
    
    ب਑ਸ ઱ח ݫఋؘ੉ఠ
    Experimental Annotations
    10
    

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11. builder.setAutoCloseTimeout(1000, SECONDS)
    실험적인 기능에는 RequiresOptIn 주석이 사용되어,
    API가 알파 단계인 것을 개발자가 알 수 있습니다.
    Error: This declaration is opt-in and
    
    its usage should be marked with
    
    @ExperimentalRoomApi
    
    
    or
    
    @OptIn(ExperimentalRoomApi::class)
    
    
    [UnsafeOptInUsageError]
    11
    

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12. @OptIn(ExperimentalRoomApi::class)
    
    
    builder.setAutoCloseTimeout(1000, SECONDS)
    알파 단계인 것을 이해하고 사용을 원하는 경우,
    OptIn을 선언하면 됩니다.
    12
    

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13. @Target({ElementType.METHOD})
    
    
    @RequiresOptIn()
    
    
    public @interface ExperimentalRoomApi {}
    
    
    @NonNull
    
    
    @ExperimentalRoomApi
    
    
    public Builder setAutoCloseTimeout(...) {
    
    
    ...
    
    
    }
    실제로 사용할 때는
    Experimental Annotation을 생성한 후,
    Experimental API 선언하면 됩니다.
    13
    

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14. 14
    02 Stable
    01 Jetpack & Versioning
    03 Alpha & Beta
    04 Additional Talks
    

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15. androidx.fragment:fragment
    STABLE
    ࢎਊ੗ ੋఠಕ੉झܳ ੤ࢎਊ оמೠ
    
    ҳࢿ ਃࣗ۽ ࠙ೡ೧઱ח ୶࢚ച
    Fragment
    15
    

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16. উ੿ࢿਸ ֫੉Ҋ ޙࢲചغ૑ ঋ਷ ز੘ਸ ઴੉ӝ ਤ೧ ղࠗܳ ѐࢶ೮णפ׮.
    
    • fragment 1.3.0ਵ۽ সؘ੉౟ೞӝ ੹ী ԙ ܾܻૉ ֢౟ܳ ੍যࠁࣁਃ.
    
    ActivityResultب ా೤غ঻णפ׮.
    Fragment
    16
    Link: h
    tt
    ps://developer.android.com/jetpack/androidx/releases/fragment#1.3.0
    

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17. // Obtain the fragment manager. May be a childFragmentManager,
    
    
    // if in a fragment, to observe child attachment.
    
    
    val fm = supportFragmentManager
    
    
    val listener = FragmentOnAttachListener {
    
    
    fragmentManager, fragment ->
    
    
    // Respond to the fragment being attached.
    
    
    }
    
    
    fm.addFragmentOnAttachListener(listener)
    onAttachFragment()는 사용 중단되었습니다.
    17
    

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18. androidx.constraintlayout:constraintlayout
    STABLE
    UI ਤ஖ܳ ૑੿ೞѢա গפݫ੉࣌ਸ ਤೠ
    
    ਬোೞҊ ૒ҙ੸ੋ ٣੗ੋ दझమੑפ׮
    ConstraintLayout
    18
    

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19. MotionLayout Editor
    Motion Editor는 애니메이션 디자인을 위한
    인터랙티브 시각 도구를 제공합니다.
    19
    

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20. MotionLayout
    20
    What's New in
    Design Tools
    

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21. androidx.camera:camera
    STABLE
    ׮নೠ Android OS ߡ੹ ߂ ੢஖ীࢲ
    
    ஠ݫۄܳ ઁযೞҊ ಴दೡ ࣻ ੓ח ా೤ػ API
    CameraX
    21
    

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22. ҕా ӝמ ਃ୒ ߂ ߡӒ ೧Ѿ
    
    • ֢୹ ࠁ੿
    
    • ஠ݫۄ ࢚క, ӝמ ੿ࠁী ੽Ӕоמ
    
    • Camera2 ࢸ੿җ ഐജ
    CameraX
    ୭न ӝӝ ߂ OS ӝמ ૑ਗ
    
    • HDR Preview*
    
    • Zoom ratio control
    
    • Do-Not-Disturb
    ؊ ա਷ ҃೷ਸ ઁҕೞח ࢿמ ѐࢶ
    
    • ࢎ૓ ୫৔੉ ୭؀ 15% ؊ ࡈۄ૗**
    
    • ؊ ࡅܲ ୡӝച
    

    (য়ېػ ੢஖ীࢲ ୭؀ 25 %)
    ** rc01৬ ࠺Үೞৈ, Samsung J4+ ӝӝীࢲ ஏ੿ػ ಣӐчੑפ׮
    * Pixel 4a, 5ীࢲ ૑ਗغݴ, ؊ ݆਷ ӝӝীࢲ ઁҕؼ ৘੿פ׮
    22
    

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23. // Set up the CameraController
    
    
    val cameraController = LifecycleCameraController(context)
    
    
    cameraController.bindToLifecycle(lifecycleOwner)
    
    
    // Attach the CameraController to PreviewView
    
    
    val previewView = findViewById(R.id.preview_view)
    
    
    previewView.setController(cameraController)
    
    
    // Use the CameraController
    
    
    cameraController.takePicture(...)
    CameraController와 PreviewView를 이용하여
    

    미리보기를 설정하고 사진을 촬영하는 코드입니다.
    23
    

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24. androidx.hilt:hilt
    STABLE
    Jetpack ਊਵ۽ ҳ୷ػ,
    
    Dagger ӝ߈੄ ױࣽചػ DI ࣛܖ࣌
    Hilt
    

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25. class MyViewModel @ViewModelInject constructor(
    
    
    @Assisted val handle: SavedStateHandle,
    
    
    val repository: Repository
    
    
    ) : ViewModel {
    
    
    // ...
    
    
    }
    
    
    implementation "androidx.hilt:hilt-lifecycle-viewmodel:$hilt_version"
    2020
    25
    

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26. @HiltViewModel
    
    
    class MyViewModel @Inject constructor(
    
    
    val handle: SavedStateHandle,
    
    
    val repository: Repository
    
    
    ) : ViewModel {
    
    
    // ...
    
    
    }
    
    
    @AndroidEntryPoint
    
    
    class MyFragment : Fragment() {
    
    
    val viewModel: MyViewModel by viewModels()
    
    
    val navigationGraphScoped: MyViewModel by
    
    
    hiltNavGraphViewModels(R.id.nav_graph)
    
    
    }
    2021
    Hilt가 Stable 단계로 전환하면서
    Core API에서 ViewModel을 지원합니다.
    SavedStateHandle도 기본으로 주입됩니다.
    26
    

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27. class MyWorker @WorkerInject constructor(
    
    
    @Assisted context: Context,
    
    
    @Assisted params: WorkerParameters,
    
    
    repo: Repository
    
    
    ) : Worker {
    
    
    //...
    
    
    }
    
    
    2020
    27
    

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28. @HiltWorker
    
    
    class MyWorker @AssistedInject constructor(
    
    
    @Assisted context: Context,
    
    
    @Assisted params: WorkerParameters,
    
    
    repo: Repository
    
    
    ) : Worker {
    
    
    //...
    
    
    }
    
    
    2021
    AssistedInject를 사용해
    WorkManager 통합도 개선했습니다.
    28
    

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29. 
    
    android:name="androidx.work.impl.WorkManagerInitializer"
    
    
    android:authorities="${applicationId}.workmanager-init"
    
    
    android:exported="false"
    
    
    tools:node="remove" />
    
    
    WorkManager 2.5.0
    29
    

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30. Hilt와 WorkManager 2.6를 사용하면
    Manifest에서 ContentProvider 대신
    Startup node를 제거해야 합니다.
    
    
    android:name="androidx.startup.InitializationProvider"
    
    
    android:authorities="${applicationId}.androidx-startup"
    
    
    android:exported="false"
    
    
    tools:node="merge">
    
    
    
    
    android:name="androidx.work.WorkManagerInitializer"
    
    
    android:value="androidx.startup"
    
    
    tools:node="remove" />
    
    
    
    WorkManager 2.6.0
    30
    

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31. @HiltAndroidTest
    
    
    @UninstallModules(RepositoryModule::class)
    
    
    @RunWith(AndroidJUnit4::class)
    
    
    class Test {
    
    
    @Module
    
    
    @InstallIn(ApplicationComponent::class)
    
    
    object FakeRepositoryModule {
    
    
    @Provides
    
    
    fun provideRepo() = FakeRepository()
    
    
    }
    
    
    }
    2020
    31
    

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32. @Module
    
    
    @TestInstallIn(
    
    
    components = SingletonComponent::class,
    
    
    replaces = RepositoryModule::class
    
    
    )
    
    
    object FakeRepositoryModule {
    
    
    @Provides
    
    
    fun provideRepo() = FakeRepository()
    
    
    }
    새로운 TestInstallIn 주석을 사용하여
    테스트 모듈을 삭제,교체할 수 있습니다.
    2021
    32
    

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33. androidx.work:work
    STABLE
    উ੿੸ਵ۽ प೯೧ঠ ೞח
    
    ૑ো оמೠ ࠺زӝ ੘সਸ ৘ড೤פ׮
    WorkManager
    

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34. 2.5+ ߡ੹ࠗఠ ݣ౭ ೐۽ࣁझ জਸ ૑ਗ೤פ׮. (:work:work-multiprocess)
    
    ߡ੹ 2.7ীࢲח Android S ನӒۄ਍٘ ઁೠਸ ୶о ૑ਗ೤פ׮.
    
    ▪︎ ੗ࣁೠ ղਊ਷ Effective Background Tasks on Android ࣁ࣌ਸ द୒೧ࠁࣁਃ.
    
    ੉ઁ WorkManager Inspectorܳ Android Studio Arctic Foxࠗఠ ࢎਊೡ ࣻ ੓णפ׮.
    WorkManager
    34
    

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35. WorkManager inspector
    35
    

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36. WorkManager inspector
    36
    

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37. androidx.room:room
    STABLE
    ࢎਊࢿ, উ੹ࢿ ߂ పझ౟ оמࢿਸ ਤ೧ ࢸ҅ػ
    
    ؘ੉ఠ߬੉झ ૑ࣘࢿ ۨ੉য
    Room
    37
    

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38. Kotlin Symbol Processingী ؀ೠ प೷੸ ૑ਗ
    
    enums ӝࠄ ૑ਗ
    
    RxJava3 ૑ਗ
    
    ݺ۸ प೯ ۽Ӧҗ э਷ ੘সਸ ಞೞѱ ೧઱ח QueryCallback بੑ
    Room
    38
    

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39. @ProvidedTypeConverter
    
    
    class TimeStampConverter(timeformat: String) {
    
    
    @TypeConverter
    
    
    fun fromTimestamp(value: Long) {
    
    
    // ...
    
    
    }
    
    
    }
    
    
    Room.inMemoryDatabaseBuilder(context, CacheDatabase::class)
    
    
    .addTypeConverter(TimeStampConverter(getPreferredTimeFormat()))
    
    
    .build()
    런타임에 TypeConverter 를 설정할 수도 있습니다.
    39
    

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40. androidx.paging:paging
    STABLE
    ੘਷ ױਤ۽ ؘ੉ఠܳ ࠛ۞য়Ҋ ಴दೞৈ
    
    ֎౟ਕ௼৬ दझమ ܻࣗझ ࣗ࠺ܳ ѐࢶ೤פ׮
    Paging
    40
    

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41. Kotlin coroutines৬ Flowܳ ୭਋ࢶਵ۽ ૑ਗ೤פ׮.
    
    RxJava ژח Guavaܳ ੉ਊೠ ࠺زӝ ۽٬ਸ ૑ਗ೤פ׮.
    
    repository৬ presentation ҅க੉ ѐࢶؾפ׮.
    
    ݠܻӖ, ߄ׯӖ, ҳ࠙੗ ߂ ۽٬ ࢚కܳ ૑ਗ೤פ׮.
    Paging 3
    Link: h
    tt
    ps://developer.android.com/topic/libraries/architecture/paging/v3-migration 41
    

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42. androidx.security:security-crypto
    STABLE
    ౵ੌҗ SharedPreferencesܳ
    
    উ੹ೞҊ औѱ ঐഐചೞࣁਃ
    Security Crypto
    42
    

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43. val prefs: SharedPreferences = EncryptedSharedPreferences.create(
    
    
    context,
    
    
    "prefs_file_name",
    
    
    mainKey,
    
    
    prefKeyEncryptionScheme = AES256_SIV,
    
    
    prefValueEncryptionScheme = AES256_GCM
    
    
    )
    
    
    // Use the resulting SharedPreferences object as usual.
    
    
    prefs.edit()
    
    
    .putBoolean("show_completed", true)
    
    
    .apply()
    SharedPreferences를 암호화하려면,
    적절한 키와 스키마로 암호화된
    SharedPreference 객체를 생성하면 됩니다.
    43
    

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44. val passphrase = SQLiteDatabase.getBytes(userEnteredPassphrase)
    
    
    val factory = SupportFactory(passphrase)
    
    
    val room = Room.databaseBuilder(activity, SomeDatabase.class, DB_NAME)
    
    
    .openHelperFactory(factory)
    
    
    .build()
    Link: h
    tt
    ps://github.com/sqlcipher/android-database-sqlcipher
    Q
    ୶റী Security-Crypto ۄ੉࠳۞ܻо
    
    Room੉ա DataStoreܳ ૑ਗೡ ҅ദ੉ ੓աਃ?
    ೱറ ߡ੹ীࢲ DataStore৬ח ా೤ؼ ৘੿ੑפ׮.
    
    Room਷ ҳ୓੸ੋ ҅ദ੉ হणפ׮.
    
    ׮݅ SQLCipherܳ ࢎਊೞݶ ૑Әب ঐഐചೡ ࣻ ੓णפ׮.
    A
    44
    

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45. 45
    02 Stable
    03 Alpha & Beta
    01 Jetpack & Versioning
    04 Additional Talks
    

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46. androidx.datastore:datastore
    BETA
    SharedPreferencesী ؀ೠ
    
    рױೞҊ ъ۱ೠ ؀উਸ ઁҕೞח ؘ੉ఠ ੷੢ ࣛܖ࣌
    DataStore
    46
    

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47. DataStore
    SharedPreferencesܳ ؀୓
    
    Kotlin coroutines / Flow۽ ৮੹ೠ ࠺زӝ
    
    RxJava 2 & 3 ૑ਗ
    ৈ۞ ҳഅ୓ ૑ਗ
    
    Proto DataStore (stronly typed)
    
    Preference DataStore (ః-ч ह)
    
    ૒੽ ҳഅب оמ (ex. Kotlin Serialization)
    Link: h
    tt
    ps://developer.android.com/topic/libraries/architecture/datastore 47
    

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48. ࠺زӝ API
    Shared Preferences DataStore
    ✅ (coroutines, RxJava)
    ✅ (change listener݅ ઁҕ)
    ✅ (runBlocking)
    ✅
    ✅
    ✅
    ✅
    ✅
    ✅ (ProtoBuf)
    ❌
    ✅
    ❌
    ❌
    ❌
    ❌
    ❌
    زӝ API
    UI ॳۨ٘ীࢲ ഐ୹ীب উ੹ೠо?
    য়ܨܳ ಴दೡ ࣻ ੓חо?
    ۠ఋ੐ য়ܨ۽ࠗఠ উ੹ೠо?
    ъೠ ੌҙࢿਸ ࠁ੢ೞח ౟ے੥࣌ API
    ؘ੉ఠ ݃੉Ӓۨ੉࣌ ୊ܻ
    ഋध উ੹ࢿ
    48
    

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49. val Context.prefStore: DataStore by preferencesDataStore(
    
    
    name = USER_PREFERENCES_NAME,
    
    
    produceMigrations = { context ->
    
    
    // Since we're migrating from SharedPreferences, add
    
    
    // a migration based on the SharedPreferences name.
    
    
    listOf(SharedPreferencesMigration(context, USER_PREFERENCES_NAME))
    
    
    }
    
    
    }
    SharedPreferencesMigration를 이용하여
    SharedPreferences에서 DataStore로
    손쉽게 마이그레이션할 수 있습니다.
    Link: h
    tt
    ps://github.com/googlecodelabs/android-datastore 49
    

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50. androidx.navigation:navigation
    ALPHA
    জ ղ ఐ࢝ਸਤೠ ೐ۨ੐ਕ௼ੑפ׮
    
    ੉ઁ ׮઺ ߔझఖਸ ૑ਗ೤פ׮
    Navigation
    50
    

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51. Navigation 2.4.0ী ׮઺ ߔ झఖ ӝמ੉ ನೣغ঻णפ׮.
    
    • navigation-fragmentח Fragment 1.4.0ী ୶оػ APIܳ ੉ਊ೤פ׮.
    

    (saveBackStack(), restoreBackStack())
    
    NavigationUIܳ ࢎਊೞݶ, ӝࠄਵ۽ ഝࢿചؾפ׮.
    Navigation
    51
    Link: h
    tt
    ps://developer.android.com/jetpack/androidx/releases/navigation#2.4.0-alpha01
    

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52. 52
    Link: h
    tt
    ps://medium.com/androiddevelopers/multiple-back-stacks-b714d974f134
    Fragment: Multiple back stacks
    fragmentManager.commit {
    
    
    setReorderingAllowed(true)
    
    
    replace(R.id.fragment_container)
    
    
    }
    
    
    fragmentManager.commit {
    
    
    setReorderingAllowed(true)
    
    
    replace(R.id.fragment_container)
    
    
    addToBackStack("profile")
    
    
    }
    
    
    fragmentManager.commit {
    
    
    setReorderingAllowed(true)
    
    
    replace(R.id.fragment_container)
    
    
    addToBackStack("edit_profile")
    
    
    }
    

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53. 53
    Link: h
    tt
    ps://medium.com/androiddevelopers/multiple-back-stacks-b714d974f134
    Fragment: Multiple back stacks
    fragmentManager.saveBackStack("profile")
    
    
    fragmentManager.commit {
    
    
    setReorderingAllowed(true)
    
    
    replace(R.id.fragment_container)
    
    
    addToBackStack("notifications")
    
    
    }
    

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54. 54
    Link: h
    tt
    ps://medium.com/androiddevelopers/multiple-back-stacks-b714d974f134
    Fragment: Multiple back stacks
    fragmentManager.saveBackStack("notifications")
    
    
    fragmentManager.restoreBackStack("profile")
    

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55. 
    
    android:id="@+id/swap_stack"
    
    
    app:destination="@id/second_stack"
    
    
    app:restoreState="true"
    
    
    app:popUpTo="@id/first_stack_start_destination"
    
    
    app:popUpToSaveState="true" />
    
    
    // or
    
    
    val navOptions = NavOptions.Builder()
    
    
    .setLaunchSingleTop(true)
    
    
    .setRestoreState(true)
    
    
    .setPopUpTo(
    
    
    navController.graph.findStartDestination().id,
    
    
    inclusive = false,
    
    
    saveState = true
    
    
    )
    
    
    .build()
    
    
    navController.navigate(selectedBottomNavId, null, navOptions)
    직접 API를 호출하는 방법도 있습니다.
    55
    

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56. androidx.appsearch:appsearch
    ALPHA
    জ ۽ஸ ߂ ӝӝ ੹୓ ৔৉ীࢲ
    
    Ҋࢿמ ੹୓ ఫझ౟ Ѩ࢝੉ оמ೤פ׮
    AppSearch
    56
    

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57. AppSearch
    SQLҗ ࠺Ү೧ ݽٚ ӝמ ઁҕ
    
    Prefix indexing
    
    Relevance ranking
    
    Usage scoring
    Ҋә ੹୓ ఫझ౟ Ѩ࢝ ૑ਗ
    
    Fuzzy matching
    
    Query expansion
    
    Language support
    57
    Link: h
    tt
    ps://developer.android.com/guide/topics/search/appsearch
    Local
    
    Storage
    Person
    
    Builder
    Message
    
    Builder
    Platform
    
    Storage
    Android S+ ࠗఠ ӝӝ ੹୓ Ѩ࢝җ ా೤غח
    

    ઺ঔ ૘઺ध झషܻ૑о ੓׮Ҋ ೤פ׮. (ই૒ ޷૑ਗ)
    

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58. ղࠗ੸ਵ۽ Icing Search ۄ੉࠳۞ܻܳ ࢎਊ೤פ׮.
    58
    h
    tt
    ps://android.googlesource.com/pla
    tf
    orm/external/icing/
    

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59. androidx.benchmark.macro:macro
    ALPHA
    ۽ஸ ژח CI ীࢲ জ द੘दрҗ झ௼܀ ࢿמਸ
    
    ੿ഛೞѱ ஏ੿೧ࠁࣁਃ
    Macrobenchmark
    * Android Studio Arctic Foxࠗఠ ૑ਗ೤פ׮
    59
    

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60. ࢿמ ஏ੿਷ য۵׮
    प ࢎਊ੗ ૑಴ח
    
    ૘҅ؼ ٸө૑ য়ېѦܽ׮.
    
    ۽ஸীࢲ ѐࢶೞҊ
    
    ஏ੿ೡ ࣻ ੓যঠ ೠ׮.
    Benchmark ۄ੉࠳۞ܻח
    
    ࢎਊ୊о ઁೠ੸੉׮.
    
    Startup੉ա Jankܳ
    
    ஏ੿ೡ ࣻ হ׮.
    উ੿੸ਵ۽ ஏ੿ೞӝ য۵׮.
    
    Ӓېࢲ Macrobenchmark
    
    ۄ੉࠳۞ܻܳ ࢜۽ ࣗѐ೤פ׮.
    60
    

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61. @get:Rule
    
    
    val benchmarkRule = MacrobenchmarkRule()
    
    
    @Test
    
    
    fun startup() = benchmarkRule.measureRepeated(
    
    
    packageName = "mypackage.myapp",
    
    
    metrics = listOf(StartupTimingMetric()), // FrameTimingMetric()
    
    
    compilationMode = CompilationMode.SpeedProfile(), // None, Speed
    
    
    startupMode = StartupMode.COLD, // WARM, HOT
    
    
    iterations = 5
    
    
    ) {
    
    
    pressHome()
    
    
    startActivityAndWait(Intent().apply {
    
    
    action = "mypackage.myapp.myaction"
    
    
    })
    
    
    }
    Link: h
    tt
    ps://github.com/android/pe
    rf
    ormance-samples/MacrobenchmarkSample 61
    

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62. Macrobenchmark प೯ Ѿҗ੄
    
    ୭ࣗ, ୭؀, ಣӐਸ ഛੋೡ ࣻ ੓णפ׮.
    
    ݂௼ܳ ௿ܼೞݶ,
    
    Studio Profiler۽ ੉زೞৈ
    
    systrace ੿ࠁܳ ࠅ ࣻ ੓णפ׮.
    62
    

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63. Android Studioীࢲ ۽ஸ۽ ࢿמ ೐۽೙ Ѿҗܳ ࠁѢա,
    
    ࢎਊ੗ীѱ ৔ೱਸ ઱ӝ ੹ী CIীࢲ ഥӈܳ ഛੋೡ ࣻ ੓णפ׮.
    Macrobenchmark
    63
    Measuring Jank
    and Startup with
    Macrobenchmark
    

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64. androidx.core:core-google-shortcuts
    ALPHA
    Google যदझఢ౟ ߂ ׮ܲ Google ઁಿ੄
    
    ز੸ ߄۽оӝܳ ୶о೤פ׮
    Google Shortcuts
    64
    

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65. ShortcutInfoCompat siCompat =
    
    
    ShortcutInfoCompat.Builder(ctx, "id_cappuccino")
    
    
    .setShortLabel("Cappuccino")
    
    
    .setIntent(Intent(ctx, OrderCappuccino::class.java))
    
    
    .addCapabilityBinding(
    
    
    "actions.intent.ORDER_MENU_ITEM",
    
    
    "menuItem.name",
    
    
    asList("cappuccino")
    
    
    )
    
    
    .build()
    
    
    ShortcutManagerCompat.pushDynamicShortcut(ctx, siCompat)
    Link: h
    tt
    ps://developer.android.com/guide/topics/ui/sho
    rt
    cuts/creating-sho
    rt
    cuts#gsi-library
    pushDynamicShortcut()를 호출하여
    동적 바로가기를 게시 또는 업데이트할 수 있습니다.
    65
    

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66. * AppCompat 1.4.0 ੉࢚ ߡ੹ী ӝࠄਵ۽ ನೣؾפ׮
    androidx.emoji2:emoji2-views*
    ALPHA
    All the emoji, everywhere 🤩 🎉
    EmojiCompat
    66
    

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67. 
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    android:text="\ud83e\udd29 \ud83c\udf89" />
    
    
    
    
    android:text="\ud83e\udd29 \ud83c\udf89" />
    
    
    
    
    android:text="\ud83e\udd29 \ud83c\udf89"/>
    Link: h
    tt
    ps://developer.android.com/jetpack/androidx/releases/emoji2#1.0.0-alpha01
    AppCompat을 사용하면 기본으로 활성화됩니다.
    AppCompat을 사용하지 않는 앱의 경우에는
    별도로 제공하는 Widget을 사용해야 합니다.
    67
    

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68. androidx.startup:startup-runtime
    BETA
    জ द੘द ҳࢿ ਃࣗܳ ୡӝചೞח
    
    рױೞҊ ബҗ੸ੋ ߑߨ
    Startup
    

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69. ContentProvider۽ ୡӝചೞ؍ Jetpack ۄ੉࠳۞ܻٜ੉
    

    ղࠗ੸ਵ۽ Startupਸ ࢎਊೞח ഋక۽ ߸҃غҊ ੓णפ׮.
    
    • Emoji2 1.0.0+
    
    • Lifecycle 2.4.0+ (ProcessLifecycleOwner)
    
    • ProfileInstaller 1.0.0+
    
    • WorkManager 2.6.0+
    Startup
    Link: h
    tt
    ps://developer.android.com/topic/libraries/app-sta
    rt
    up 69
    

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70. class MultiProcessInitializationProvider : InitializationProvider()
    
    
    
    
    android:name=".MultiProcessInitializationProvider"
    
    
    android:authorities="${applicationId}:multiprocess.androidx-startup"
    
    
    android:exported="false"
    
    
    android:process=":multiprocess">
    
    
    
    
    android:name="myapp.MultiProcessInitializer"
    
    
    android:value="androidx.startup" />
    
    
    
    Link: h
    tt
    ps://developer.android.com/jetpack/androidx/releases/sta
    rt
    up#1.1.0-beta01
    멀티 프로세스에서 Startup 라이브러리로
    자동 초기화가 가능합니다.
    70
    

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71. 71
    02 Stable
    04 Additional Talks
    01 Jetpack & Versioning
    03 Alpha & Beta
    

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72. Compose
    
    integrations
    72
    

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73. What’s new in Jetpack Compose Using Jetpack libraries in Compose
    73
    • Activity
    
    • ViewModel
    
    • ConstraintLayout
    • Hilt
    
    • Paging
    
    • Navigation
    Compose integrations
    

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74. 74
    Jetpack Composeܳ ࠁ৮ೞח Ѫਸ
    
    ݾ಴۽ ೞח ۄ੉࠳۞ܻ ޘ਺ੑפ׮.
    
    ѐߊ੗о ੌ߈੸ਵ۽ ೙ਃ۽ ೞ૑݅
    

    ই૒਷ ࢎਊೡ ࣻ হח ӝמਸ ઁҕ೤פ׮.
    
    • Image loading (Glide, Coil)
    
    • Insets, System UI Controller
    
    • AppCompat Theme Adapter
    
    • Pager & Flow layout
    
    • Swipe to Refresh, Placeholder
    
    • Permissions
    Accompanist
    

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75. 75
    Android XML۽ ੿੄ػ
    
    Material Components ప݃ܳ
    
    Jetpack Compose ప݃۽
    
    ੤ࢎਊೡ ࣻ ੓ח ۄ੉࠳۞ܻੑפ׮.
    MDC-Compose
    Theme Adapter
    

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76. Form
    
    factors
    76
    

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77. What's New in Foldables, Tablets, and Large Screens
    
    • androidx.window goo.gle/jetpack-window
    
    
    • androidx.slidingpanelayout goo.gle/two-pane
    
    Now is the Time: What's New With Wear
    
    • androidx.wear d.android.com/wear
    Form factors
    77
    

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78. And so
    
    much more…
    78
    

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79. ݃૑݄ਵ۽,
    79
    

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80. Q ੉ઁ LiveDataח Deprecated ؼөਃ?
    ইתפ׮. Java ࢎਊ੗ܳ ਤ೧ ਬ૑೤פ׮.
    
    ࢜۽਍ Jetpack ۄ੉࠳۞ܻח ௏ܖ౯ ӝ߈ਵ۽ ੘ࢿغ঻णפ׮.
    

    ೞ૑݅ ੉Ѫ੉ LiveDataܳ Deprecatedೠ׮ח ੄޷ח ইתפ׮.
    
    ਋ܻח ೦࢚ ੉੹ ߡ੹җ੄ ഐജࢿਸ Ҋ۰ೞҊ ੓णפ׮.
    
    ӒܻҊ RxJavaח ૒ҙ੸੉૑ ঋইࢲ Java݅ ࢎਊೞח ҃਋,
    
    LiveDataо о੢ рױೞҊ ഴܯೠ ؀উੑפ׮.
    
    ٮۄࢲ LiveDataח ҅ࣘ೧ࢲ ૑ਗؼ ৘੿ੑפ׮.
    
    ׮݅ ୭Ӕী LiveData৬ Flowܳ ࠺ҮೞҊ, ل рী ੹ജೞח
    
    ߑߨਸ ׸਷ ࢜۽਍ ࠶۽Ӓ ನझ౟ܳ ѱद೮णפ׮.
    
    ೠߣ ੍যࠁदח Ѫਸ ӂ೧٘݀פ׮.
    A
    80
    Link: h
    tt
    ps://medium.com/androiddevelopers/migrating-from-livedata-to-kotlins-
    fl
    ow-379292f419
    f
    ( * ੄৉੉ ੓ਸ ࣻ ੓णפ׮ )
    

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81. Q Flowח ঱ઁ Stable੉ ؼөਃ?
    ؀ࠗ࠙੄ APIח ੉޷ Stableੑפ׮.
    
    ୭Ӕ ௏ౣܽ 1.5੉ ҕѐغ঻Ҋ, ૑Ә ߄۽ ࢎਊೞप ࣻ ੓णפ׮.
    
    ӒܻҊ উ٘۽੉٘ীࢲ Flowܳ ࢎਊೞח ߑߨҗ ৘ઁ৬ э਷
    
    ޙࢲب ҍ ઁҕೞ۰ ೤פ׮. ૑Ә ࢎਊ೧ࠁࣁਃ!
    A
    81
    Link: h
    tt
    ps://developer.android.com/kotlin/
    fl
    ow
    ( * ੄৉੉ ੓ਸ ࣻ ੓णפ׮ )
    

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82. Q
    KMM੉ ҙबਸ ߉Ҋ ੓חؘ, = Kotlin Multiplatform Mobile
    
    Jetpack ۄ੉࠳۞ܻب ૑ਗೡ ҅ദ੉ ੓աਃ?
    ই૒ ҳ୓੸ੋ ҅ദ਷ হणפ׮.
    
    Jetpack ۄ੉࠳۞ܻח ೦࢚ উ٘۽੉٘ܳ ਋ࢶਵ۽ Ҋ۰೤פ׮.
    
    ӒܻҊ ࣻߔ݅ݺ੄ ѐߊ੗о ࢎਊೞח Jetpack ۄ੉࠳۞ܻܳ
    
    ௏ౣܽ ݣ౭೒ۖಬਵ۽ ੘ࢿೞח Ѫ਷ Ӓܻ औ૑ ঋणפ׮.
    
    ޛۿ Ӓۧ׮Ҋ ׮ܲ ೒ۖಬਸ ૑ਗೡ ࣻ হ׮ח ੄޷ח ইפҊ,
    
    ݣ౭೒ۖಬਸ ૑ਗೞ۰ݶ ݢ੷ ௏ౣܽਵ۽ ੹ജ೧ঠ ೞחؘ,
    
    पઁ۽ Jetpack ۄ੉࠳۞ܻо ௏ౣܽਵ۽ ੹ജغӝө૑ח
    
    5֙੉ۄח ҭ੢൤ য়ےदр੉ Ѧ۷णפ׮.
    
    ژ Javaܳ Ҋࣻೞח ౵౟ցо ੓׮ח ੼ب ੓णפ׮.
    
    ٮۄࢲ ই૒਷ ݺഛೠ ఋ੐ۄੋ੉ হणפ׮.
    A
    82
    Link: h
    tt
    ps://kotlinlang.org/docs/mobile/home.html
    ( * ੄৉੉ ੓ਸ ࣻ ੓णפ׮ )
    

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83. Q
    KSP۽ ݃੉Ӓۨ੉࣌ ೡ ҅ദ੉ ੓աਃ?
    
    = Kotlin Symbol Processing
    ֎, ૓೯઺ੑפ׮.
    
    KSPח Java੄ annotation processor৬ ਬࢎ೤פ׮.
    
    Jetpack ۄ੉࠳۞ܻীח Room੉ա DataBinding୊ۢ
    
    ݆਷ annotation processorо ੓חؘਃ.
    
    ૑Ә਷ Roomী݅ प೷੸ਵ۽ ઁҕೞҊ ੓णפ׮.
    
    KSPо উ੿ചغݶ ׮ܲ ۄ੉࠳۞ܻ੄ annotation processorب
    
    ݽف KSP۽ ߸ജೡ ৘੿ੑפ׮. Dagger৬ Hiltب ನೣؾפ׮.
    
    Roomਵ۽ పझ౟೮ਸ ٸח ࠽٘ ࣘبо ௼ѱ ѐࢶغ঻णפ׮.
    
    খਵ۽ KSPо ঴݃ա ѐࢶೡ ࣻ ੓ਸ૑ ӝ؀ؾפ׮.
    A
    83
    Link: h
    tt
    ps://github.com/google/ksp
    ( * ੄৉੉ ੓ਸ ࣻ ੓णפ׮ )
    

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84. ؊ ա਷ Jetpack੉ غب۾, ੉गח ١۾೧઱ࣁਃ.
    👆
    84
    

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85. Sungyong An
    
    Android Developer, NAVER WEBTOON
    
    @fornewid
    Thank you!
    deveopers.android.com/jetpack
    
    androidx.dev
    
    speakerdeck.com/fornewid/
    whats-new-in-jetpack-2021
    Resources
    85
    

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