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[Full Version] 최신 AndroiodX 체크

[Full Version] 최신 AndroiodX 체크

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pluulove (노현석)

December 01, 2019
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  1. Question?! 1. AndroidXܳ ٜযࠌ׮? 2. Jetpackਸ ঌҊ੓׮? 3. Support Libraryо

    ӝরդ׮? 4. Android Architecture Components? 5. ੉ٜ੄ ର੉੼ਸ ঌҊ੓׮?
  2. AndroidX Android ౱੉ Jetpack ղীࢲ ۄ੉࠳۞ܻܳ ѐߊ, పझ౟, ಁః૚, ߡ੹

    ҙܻ, ୹दೞחؘ ࢎਊೞח য়೑ࣗझ ೐۽ં౟ੑפ׮. https://developer.android.com/jetpack/androidx
  3. Updated packaging • Android java ࣗझܳ ಁః૑߹۽ ܻಂష݂ ▪ Android.<feature>.ClassName

    • Maven ▪ androidx.<feature>:<feature>-<sub-feature> ▪ ೙ਃೠ ӝמ߹ ߓನ • -v7, -v4 ಁః૑ݺ ઁѢ
  4. Activity & Fragment & Navigation - Activity 1.0.0(Stable) , 1.1.0-rc02(RC)

    - Fragment 1.1.0(Stable) , 1.2.0-rc02(RC) - Navigation 2.1.0(Stable) , 2.2.0-rc02(RC)
  5. class OldFragment : Fragment() { // Crazy fun backStart() {

    requireActivity().onBackPressed() } } җѢ Fragmentীࢲ onBackPressed // Crazy fun backStart() { requireActivity().onBackPressed() } // Safe override fun onAttach(context: Context) { super.onAttach(context) backListener = context as? BackListener backListener?.onBackPressed() }
  6. class MainFragment : Fragment() { private val dispatcher by lazy

    { requireActivity().onBackPressedDispatcher } private val backPressedCallback = object : OnBackPressedCallback(true) { override fun handleOnBackPressed() { // TODO } } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) dispatcher.addCallback(this, backPressedCallback) } } Fragmentীࢲ onBackPressed ୊ܻ Back Pressed Flag
  7. // ComponentActivity.java public class ComponentActivity { private final OnBackPressedDispatcher mOnBackPressedDispatcher

    = new OnBackPressedDispatcher(new Runnable() { @Override public void run() { // fallbackOnBackPressed ComponentActivity.super.onBackPressed(); } }); @Override @MainThread public void onBackPressed() { mOnBackPressedDispatcher.onBackPressed(); } } // OnBackPressedDispatcher.java public final class OnBackPressedDispatcher { @MainThread public void onBackPressed() { Iterator<OnBackPressedCallback> iterator = mOnBackPressedCallbacks.descendingIterator(); while (iterator.hasNext()) { OnBackPressedCallback callback = iterator.next(); if (callback.isEnabled()) { callback.handleOnBackPressed(); return; } } if (mFallbackOnBackPressed != null) { mFallbackOnBackPressed.run(); } } } ComponentActivity / BackPressedDispatcher ൒ܴ
  8. // ComponentActivity.java public class ComponentActivity { private final OnBackPressedDispatcher mOnBackPressedDispatcher

    = new OnBackPressedDispatcher(new Runnable() { @Override public void run() { // fallbackOnBackPressed ComponentActivity.super.onBackPressed(); } }); @Override @MainThread public void onBackPressed() { mOnBackPressedDispatcher.onBackPressed(); } } // OnBackPressedDispatcher.java public final class OnBackPressedDispatcher { @MainThread public void onBackPressed() { Iterator<OnBackPressedCallback> iterator = mOnBackPressedCallbacks.descendingIterator(); while (iterator.hasNext()) { OnBackPressedCallback callback = iterator.next(); if (callback.isEnabled()) { callback.handleOnBackPressed(); return; } } if (mFallbackOnBackPressed != null) { mFallbackOnBackPressed.run(); } } } ComponentActivity / BackPressedDispatcher ൒ܴ
  9. // ComponentActivity.java public class ComponentActivity { private final OnBackPressedDispatcher mOnBackPressedDispatcher

    = new OnBackPressedDispatcher(new Runnable() { @Override public void run() { // fallbackOnBackPressed ComponentActivity.super.onBackPressed(); } }); @Override @MainThread public void onBackPressed() { mOnBackPressedDispatcher.onBackPressed(); } } ComponentActivity / BackPressedDispatcher ൒ܴ // OnBackPressedDispatcher.java public final class OnBackPressedDispatcher { @MainThread public void onBackPressed() { Iterator<OnBackPressedCallback> iterator = mOnBackPressedCallbacks.descendingIterator(); while (iterator.hasNext()) { OnBackPressedCallback callback = iterator.next(); if (callback.isEnabled()) { callback.handleOnBackPressed(); return; } } if (mFallbackOnBackPressed != null) { mFallbackOnBackPressed.run(); } } }
  10. // ComponentActivity.java public class ComponentActivity { private final OnBackPressedDispatcher mOnBackPressedDispatcher

    = new OnBackPressedDispatcher(new Runnable() { @Override public void run() { // fallbackOnBackPressed ComponentActivity.super.onBackPressed(); } }); @Override @MainThread public void onBackPressed() { mOnBackPressedDispatcher.onBackPressed(); } } // OnBackPressedDispatcher.java public final class OnBackPressedDispatcher { @MainThread public void onBackPressed() { Iterator<OnBackPressedCallback> iterator = mOnBackPressedCallbacks.descendingIterator(); while (iterator.hasNext()) { OnBackPressedCallback callback = iterator.next(); if (callback.isEnabled()) { callback.handleOnBackPressed(); return; } } if (mFallbackOnBackPressed != null) { mFallbackOnBackPressed.run(); } } } ComponentActivity / BackPressedDispatcher ൒ܴ
  11. // ComponentActivity.java public class ComponentActivity { private final OnBackPressedDispatcher mOnBackPressedDispatcher

    = new OnBackPressedDispatcher(new Runnable() { @Override public void run() { // fallbackOnBackPressed ComponentActivity.super.onBackPressed(); } }); @Override @MainThread public void onBackPressed() { mOnBackPressedDispatcher.onBackPressed(); } } // OnBackPressedDispatcher.java public final class OnBackPressedDispatcher { @MainThread public void onBackPressed() { Iterator<OnBackPressedCallback> iterator = mOnBackPressedCallbacks.descendingIterator(); while (iterator.hasNext()) { OnBackPressedCallback callback = iterator.next(); if (callback.isEnabled()) { callback.handleOnBackPressed(); return; } } if (mFallbackOnBackPressed != null) { mFallbackOnBackPressed.run(); } } } ComponentActivity / BackPressedDispatcher ൒ܴ
  12. ViewModel ୡӝച lifecycle-viewmodel private val viewModel by lazy { ViewModelProviders.of(this).get<MainViewModel>()

    } This constructor was deprecated in API level 1.1.0. This class should not be directly instantiated
  13. ViewModel ୡӝച lifecycle-viewmodel val vm: VM = ViewModelProvider(this, factory).get(VM::class.java) val

    vm: VM = ViewModelProvider(this).get(VM::class.java) public ViewModelProvider(@NonNull ViewModelStoreOwner owner) { this(owner.getViewModelStore(), owner instanceof HasDefaultViewModelProviderFactory ? ((HasDefaultViewModelProviderFactory) owner).getDefaultViewModelProviderFactory() : NewInstanceFactory.getInstance()); }
  14. Support Coroutines in ViewModel After lifecycle-viewmodel-ktx 2.1.0 val ViewModel.viewModelScope: CoroutineScope

    get() { val scope: CoroutineScope? = this.getTag(JOB_KEY) if (scope != null) { return scope } return setTagIfAbsent(JOB_KEY, CloseableCoroutineScope(SupervisorJob() + Dispatchers.Main.immediate)) } To be continue…
  15. #AndroidDevSummit @Composable fun FilteredList(contacts: List<Contact>, filterText: String = "") {

    val state = +state { filterText } VerticalScroller { Column { TextField(filterText, onValueChange = { state.value = it }) contacts.filter { it.contains(state.value) }.forEach { Row { Image(it.photo) Text(it.name) } } } } }
  16. #AndroidDevSummit • Simplify • Fix what’s broken • No more

    cheating • Material + Animations • Compatibility Jetpack Compose
  17. #AndroidDevSummit Android Studio Live preview, Apply Changes Compose Compiler Plugin

    Code generation extensions kotlinc Upstream Kotlin compiler (1.4) Compose UI Foundation Standard layouts, interactions Compose UI Core Input, Measure, Layout, Drawing Compose Runtime Tree management, Effects Compose UI Material Surface, Buttons, Tabs, Themes Compose Build time (development host) Runtime (on device)
  18. #AndroidDevSummit Compose UI Foundation Standard layouts, interactions Compose UI Core

    Input, Measure, Layout, Drawing Compose UI Material Surface, Buttons, Tabs, Themes BUTTON Gestures, accessibility, & other internals
  19. Jetpack Compose • I/O 19, Unbundled • Announced Android Studio

    4.0 Canary 1 in Android Dev Summit • Last Release 0.1.0-dev02
  20. #AndroidDevSummit Using FragmentScenario @Test fun testEventFragment() { val scenario =

    launchFragmentInContainer<MyFragment>() onView(withId(R.id.refresh)).perform(click()) scenario.onFrament { fragment -> // Check that the fragment handled the click correctly. } }
  21. #AndroidDevSummit Using FragmentScenario @Test fun testEventMoveToCreatedFragment() { val scenario =

    launchFragmentInContainer<MyFragment>() scenario.moveToState(State.CREATED) } @Test fun testEventFragment() { val scenario = launchFragmentInContainer<MyFragment>() scenario.recreate() }
  22. #AndroidDevSummit Using FragmentFactory private class MyFactory() : FragmentFactory() { override

    fun instantiate( classLoader: ClassLoader, className: String ) = when (className) { MyFragment::class.java.name -> MyFragment(...) else -> super.instantiate(classLoader, className) } } override fun onCreate(savedInstanceState: Bundle?) { supportFragmentManager.fragmentFactory = MyFactory() super.onCreate(savedInstanceState) }
  23. FragmentContainerView extends FrameLayout • Fragmentਊ Container ◦ AddView => IllegalStateException

    • <fragment> / <FrameLayout>ܳ ؀୓ • Z-index ޙઁ ೧Ѿ • 3о૑ ੘সਸ ૓೯ ◦ ࢜۽਍ Fragment ੋझఢझ ࢤࢿ ◦ Fragment.onInflate(Context, AttributeSet, Bundle) ഐ୹ ◦ FragmentTransactionਸ प೯ೞৈ FragmentManagerী ୶о
  24. ViewModel ୡӝച // activity-ktx val activityVM : ActivityViewModel by viewModels()

    // fragment-ktx val fragmentViewModel : MyViewModel by viewModels() val activityViewModel : MyViewModel by activityViewModels() // navigation-ktx val navGraphViewModel: MyViewModel by navGraphViewModels(R.id.main)
  25. ROOM #AndroidDevSummit • RxJava/Coroutines ૑ਗ • Raw ௪ܻ ૑ਗ •

    AndroidX ݃੉Ӓۨ੉࣌ • Full Text Search • Views • SQLiteী ؀ೠ ୶࢚ച ҅க ઁҕ • ஹ౵ੌ ఋ੐ী Query ୓௼ • Migration੉ ए਑ • పझ౟ೞӝ ए਑ • Last 2.2.2(Stable)
  26. #AndroidDevSummit Async queres Query Type Observable Read One-Shot Read /

    Write Lifecycle RxJava Coroutines LiveData Publisher, Observable, Flowable Flowable N/A Single, Maybe, Completale suspend fun New!
  27. Flow 101 - Kotlin coroutine primitive - Asynchronous - Cold

    stream • transform stream (e.g. map, filter) • consume data (e.g. collect, single, toList)
  28. Flow Example fun getDogsToPet(limit: Int = -1): Flow<Dog> = flow

    { var i = 0 while (limit < 0 || i > limit) { emit(getRandomDog()) i++ } }
  29. ୡӝ DB ؘ੉ఠ ࢸ஖ (җѢ) 1. Database ৌӝ 2. Schema

    Ѩૐ 3. Database File ਫ਼Ә 4. Thread زӝച 5. Content ࠂࢎ 6. Database ײӝ #AndroidDevSummit
  30. #AndroidDevSummit • Easy to get off main thread • Minimal

    boilerplate • Structured concurrency = managed jobs Coroutines ੢੼
  31. #AndroidDevSummit class MyActivity : Activity { override fun onCreate(state: Bundle?)

    { super.onCreate(state) lifecycleScope.launch { // Run } lifecycleScope.launchWhenResumed { // Run } } } Activities & Fragments lifecycleScope.launchWhenResumed { // Run }
  32. #AndroidDevSummit ViewModel + LiveData class MainActivityViewModel : ViewModel { private

    val _result = MutableLiveData<String>() val result = LiveData<String> = _result init { viewModelScope.launch { val computationResult = doComputation() _result.value = computationResult } } }
  33. #AndroidDevSummit liveData coroutine builder class MyViewModel { val result =

    liveData { emit(doComputation()) } } After lifecycle 2.2 liveData(Dispatchers.IO) { emit(LOADING.STRING) emitSource(dataSource.fetchWeather()) } 1 2 LiveData
  34. emit N Values val currentWeather: LiveData<String> = dataSource.fetchWeather() LiveData →

    LiveData Flow → LiveData val currentWeatherFlow: LiveData<String> = liveData { dataSource.fetchWeatherFlow().collect { emit(it) } }
  35. emit N Values LiveData → LiveData Flow → LiveData val

    currentWeather: LiveData<String> = dataSource.fetchWeather() val currentWeatherFlow: LiveData<String> = dataSource.fetchWeatherFlow().asLiveData()
  36. emit 1 + emit N Values val currentWeather: LiveData<String> =

    liveData { emit(LOADING_STRING) emitSource(dataSource.fetchWeather()) } LiveData → LiveData Flow → LiveData val currentWeatherFlow: LiveData<String> = liveData { emit(LOADING_STRING) emitSource( dataSource.fetchWeatherFlow().asLiveData() ) }
  37. emit 1 + emit N Values val currentWeather: LiveData<String> =

    liveData { emit(LOADING_STRING) emitSource(dataSource.fetchWeather()) } LiveData → LiveData Flow → LiveData val currentWeatherFlow: LiveData<String> = dataSource.fetchWeatherFlow() .onStart { emit(LOADING_STRING) } .asLiveData()
  38. Suspend transformation val currentWeather: LiveData<String> = dataSource.fetchWeather().switchMap { liveData {

    emit(heavyTransformation(it)) } } LiveData → LiveData val currentWeatherFlow: LiveData<String> = dataSource.fetchWeatherFlow() .map { heavyTransformation(it) } .asLiveData() } Flow → LiveData
  39. #AndroidDevSummit +{API} New Capabilities • Tap to focus • Zoom

    control • Device rotation info • Flash availability • And a lot more!
  40. #AndroidDevSummit // Set up use case // Step 1. Config

    val imageCapture = ImageCaptureConfig.Builder() .setTargetResolution(Size(600, 800)) .build() // Step 2. Bind CameraX.bindToLifecycle(this, imageCapture) // Step 3. Act imageCapture.takePicture(...)
  41. What is benchmarking? - ௏٘ ࢿמ ஏ੿ - ஏ੿ػ Ѿҗ۽

    ѐࢶ ߈৔ - ੹୓ ೐۽Ӓ۔ प೯ Improving App Performance with Benchmarking (Google I/O ’19) Source : https://www.youtube.com/watch?v=ZffMCJdA5Qc
  42. Source : https://www.youtube.com/watch?v=ZffMCJdA5Qc Benchmark @Test fun myFirstBenchmark() { val worker

    = TestListenableWorkerBuilder<MyWorker>(context).build() val COUNT = 5 // Small iteration count val start = System.nanoTime() // Measuring immediately for (i in 0..COUNT) { worker.doWork() } // Includes outliers! val elapsed = (System.nanoTime() - start) Log.d("Benchmark", "Time taken was $elapsed ns") }
  43. Source : https://www.youtube.com/watch?v=ZffMCJdA5Qc Benchmark @Test fun myFirstBenchmark() { val worker

    = TestListenableWorkerBuilder<MyWorker>(context).build() val COUNT = 5 // Small iteration count val start = System.nanoTime() // Measuring immediately for (i in 0..COUNT) { worker.doWork() } // Includes outliers! val elapsed = (System.nanoTime() - start) Log.d("Benchmark", "Time taken was $elapsed ns") }
  44. Source : https://www.youtube.com/watch?v=ZffMCJdA5Qc Benchmark @Test fun myFirstBenchmark() { val worker

    = TestListenableWorkerBuilder<MyWorker>(context).build() val COUNT = 5 // Small iteration count val start = System.nanoTime() // Measuring immediately for (i in 0..COUNT) { worker.doWork() } // Includes outliers! val elapsed = (System.nanoTime() - start) Log.d("Benchmark", "Time taken was $elapsed ns") }
  45. Source : https://www.youtube.com/watch?v=ZffMCJdA5Qc Benchmark @get:Rule val benchmarkRule = BenchmarkRule() @Test

    fun myFirstBenchmark() { val worker = TestListenableWorkerBuilder<MyWorker>(context).build() val COUNT = 5 // Small iteration count val start = System.nanoTime() // Measuring immediately for (i in 0..COUNT) { worker.doWork() } // Includes outliers! val elapsed = (System.nanoTime() - start) Log.d("Benchmark", "Time taken was $elapsed ns") }
  46. Source : https://www.youtube.com/watch?v=ZffMCJdA5Qc Benchmark @get:Rule val benchmarkRule = BenchmarkRule() @Test

    fun myFirstBenchmark() { val worker = TestListenableWorkerBuilder<MyWorker>(context).build() benchmarkRule.measureRepeated { worker.doWork() } }
  47. RecyclerView Benchmark @get:Rule val activityRule = ActivityTestRule(MainActivity::class.java) @get:Rule val benchmarkRule

    = BenchmarkRule() @UiThreadTest @Test fun simpleScroll() { val recyclerView = activityRule.activity.recyclerView benchmarkRule.measureRepeated { val heightOfLastItem = recyclerView.getLastChild().height recyclerView.scrollBy(0, heightOfLastItem) } } https://github.com/android/performance-samples/blob/master/BenchmarkSample/benchmark/ src/androidTest/java/com/example/benchmark/RecyclerViewBenchmark.kt
  48. @get:Rule val activityRule = ActivityTestRule(MainActivity::class.java) @get:Rule val benchmarkRule = BenchmarkRule()

    @UiThreadTest @Test fun simpleScroll() { val recyclerView = activityRule.activity.recyclerView benchmarkRule.measureRepeated { val heightOfLastItem = recyclerView.getLastChild().height recyclerView.scrollBy(0, heightOfLastItem) } } https://github.com/android/performance-samples/blob/master/BenchmarkSample/benchmark/ src/androidTest/java/com/example/benchmark/RecyclerViewBenchmark.kt RecyclerView Benchmark
  49. RecyclerView Benchmark @get:Rule val activityRule = ActivityTestRule(MainActivity::class.java) @get:Rule val benchmarkRule

    = BenchmarkRule() @UiThreadTest @Test fun simpleScroll() { val recyclerView = activityRule.activity.recyclerView benchmarkRule.measureRepeated { val heightOfLastItem = recyclerView.getLastChild().height recyclerView.scrollBy(0, heightOfLastItem) } } https://github.com/android/performance-samples/blob/master/BenchmarkSample/benchmark/ src/androidTest/java/com/example/benchmark/RecyclerViewBenchmark.kt
  50. RecyclerView Benchmark @get:Rule val activityRule = ActivityTestRule(MainActivity::class.java) @get:Rule val benchmarkRule

    = BenchmarkRule() @UiThreadTest @Test fun simpleScroll() { val recyclerView = activityRule.activity.recyclerView benchmarkRule.measureRepeated { val heightOfLastItem = recyclerView.getLastChild().height recyclerView.scrollBy(0, heightOfLastItem) } } https://github.com/android/performance-samples/blob/master/BenchmarkSample/benchmark/ src/androidTest/java/com/example/benchmark/RecyclerViewBenchmark.kt
  51. RecyclerView Benchmark @get:Rule val activityRule = ActivityTestRule(MainActivity::class.java) @get:Rule val benchmarkRule

    = BenchmarkRule() @UiThreadTest @Test fun simpleScroll() { val recyclerView = activityRule.activity.recyclerView benchmarkRule.measureRepeated { val heightOfLastItem = recyclerView.getLastChild().height recyclerView.scrollBy(0, heightOfLastItem) } } https://github.com/android/performance-samples/blob/master/BenchmarkSample/benchmark/ src/androidTest/java/com/example/benchmark/RecyclerViewBenchmark.kt
  52. RecyclerView Benchmark @get:Rule val activityRule = ActivityTestRule(MainActivity::class.java) @get:Rule val benchmarkRule

    = BenchmarkRule() @UiThreadTest @Test fun simpleScroll() { val recyclerView = activityRule.activity.recyclerView benchmarkRule.measureRepeated { val heightOfLastItem = recyclerView.getLastChild().height recyclerView.scrollBy(0, heightOfLastItem) } } https://github.com/android/performance-samples/blob/master/BenchmarkSample/benchmark/ src/androidTest/java/com/example/benchmark/RecyclerViewBenchmark.kt
  53. RecyclerView Benchmark @get:Rule val activityRule = ActivityTestRule(MainActivity::class.java) @get:Rule val benchmarkRule

    = BenchmarkRule() @UiThreadTest @Test fun simpleScroll() { val recyclerView = activityRule.activity.recyclerView benchmarkRule.measureRepeated { val heightOfLastItem = recyclerView.getLastChild().height recyclerView.scrollBy(0, heightOfLastItem) } } https://github.com/android/performance-samples/blob/master/BenchmarkSample/benchmark/ src/androidTest/java/com/example/benchmark/RecyclerViewBenchmark.kt
  54. RecyclerView Benchmark @get:Rule val activityRule = ActivityTestRule(MainActivity::class.java) @get:Rule val benchmarkRule

    = BenchmarkRule() @UiThreadTest @Test fun simpleScroll() { val recyclerView = activityRule.activity.recyclerView benchmarkRule.measureRepeated { val heightOfLastItem = recyclerView.getLastChild().height recyclerView.scrollBy(0, heightOfLastItem) } } https://github.com/android/performance-samples/blob/master/BenchmarkSample/benchmark/ src/androidTest/java/com/example/benchmark/RecyclerViewBenchmark.kt Without Time runWithTimingDisabled(…)
  55. CardView vs CardView Support (28.0.0-alpha01) AndroidX (1.0.0) 45 Removals, 44

    Additions - JavaDoc : 38 lines - Package/Import : 5 lines - Empty Line : 1 lines Package name݅ ׮ܴ
  56. Better package management ؕ஖ ௾ Library ܻ࠙ => ؊ ࡅܲ

    ܾܻૉ - Google Play Services - Firebase - ButterKnife - Mockito2 - SQL Delight - New libraries
  57. FIRST backup backup backup backup backup backup backup backup backup

    backup backup backup backup backup backup backup backup backup backup backup backup backup backup backup backup backup backup backup backup backup
  58. Migration • Menu Bar Refactor > Migrate to AndroidX ࢶఖ

    • External Librariesী AndroidX ޷֢୹द Opt 1. Gradle Sync Opt 2. Invalidate Caches / Restart • 100% ߸ജ੉ উؼ ࣻ ੓ਵ޲۽ ѐੋ੸ਵ۽ ࣻز੉ উ੿੸
  59. Targeting API level 28 or lower dependencies { ... implementation

    'com.android.support:appcompat-v7:28.0.0' implementation 'android.arch.lifecycle:extensions:1.1.1' ... }
  60. gradle.properties # AndroidX package structure to make it clearer which

    packages are bundled with the # Android operating system, and which are packaged with your app's APK android.useAndroidX=true # Automatically convert third-party libraries to use AndroidX android.enableJetifier=tru https://developer.android.com/studio/command-line/jetifier
  61. Jetifier AndroidX ಁః૑ܳ ࢎਊೡ ࣻ ੓ب۾ Support Libraryܳ ݃੉Ӓۨ੉࣌ Migration

    ߑߨ • Android Studio ղ੄ Bundle۽ ػ Plugin ࢎਊ • ૒੽ ݃੉Ӓۨ੉࣌ https://developer.android.com/studio/command-line/jetifier
  62. Migration to AndroidX • Support Libraryח Deprecate • ঱ઃо ೧ঠೡ

    ੘স਷ ؊ ੉࢚ ইפ׮ • Release Android 10 (2019.09.03) • ࢲ࠺झ੄ ઱ਃ ױ݈੄ Android 10 সؘ੉౟ दӝ ୓௼
  63. Stable Activity AppCompat Lifecycle Navigation Room Work Autofill Benchmark Biometric

    Coordinator Layout Fragment Lifecycle ViewModel-SavedState Navigation RecyclerView ViewPager2 ConstraintLayout RC Beta Alpha Ads Browser Camera Car Compose Security