What's new Android 12

https://www.youtube.com/watch?v=Gqlapty5QXo

Transcript

1. Kenji Abe - Android, Kotlin GDE / DeNA @STAR_ZERO What's new Android 12 Android 12 1
2. Splash screens 2
3. 3 windowSplashScreenBackground windowSplashScreenAnimatedIcon windowSplashScreenIconBackgroundColor <item name="android:windowSplashScreenBackground">@color/...</item> <item name="android:windowSplashScreenAnimatedIcon">@drawable/...</item> <item name="android:windowSplashScreenIconBackgroundColor">@color/...</item>
4. 4 override fun onCreate(savedInstanceState: Bundle?) { // ... val content: View = findViewById(android.R.id.content) content.viewTreeObserver.addOnPreDrawListener( object : ViewTreeObserver.OnPreDrawListener { override fun onPreDraw(): Boolean { return if (viewModel.isReady) { // 準備完了 content.viewTreeObserver.removeOnPreDrawListener(this) true } else { // 準備中 false } } } ) }
5. 5 override fun onCreate(savedInstanceState: Bundle?) { // ... splashScreen.setOnExitAnimationListener { splashScreenView -> val animation = ObjectAnimator.ofFloat( /* ... */) animation.duration = 200L animation.doOnEnd { splashScreenView.remove() } animation.start() } }
6. RenderEffect 6
7. 7 imageView.setRenderEffect( RenderEffect.createBlurEffect( 20F, 20F, Shader.TileMode.MIRROR ) )
8. Widgets 8
9. 9 • @android:dimen/system_app_widget_background_radius • @android:dimen/system_app_widget_inner_radius Rounded corners
10. 10 • CheckBox • Switch • RadioButton New compound buttons
11. 11 // CheckBox remoteView.setCompoundButtonChecked(R.id.check, true) // RadioGroup remoteView.setRadioGroupChecked(R.id.radio_group, R.id.radio_1) // Checkイベント remoteView.setOnCheckedChangeResponse( R.id.check, RemoteViews.RemoteResponse.fromPendingIntent(pendingIntent) )
12. 12 Responsive layouts
13. 13 val listView = RemoteViews(...) val gridView = RemoteViews(...) val viewMapping = mapOf( SizeF(150f, 110f) to listView, SizeF(250f, 110f) to gridView ) val removeViews = RemoteViews(viewMapping) appWidgetManager.updateAppWidget(appWidgetId, removeViews)
14. 14 Preview layout, description <appwidget-provider ... android:previewLayout="@layout/..." android:description="@string/..." />
15. Toast 15
16. Notification 16
17. 17 Custom notifications
19. 19 • 通知から起動したService, Broadcast receiverからActivityを起動できない • Indirect notification activity start (trampoline) from PACKAGE_NAME blocked Notification trampoline restrictions
20. Background Tasks 20
21. 21 • 特別なケースを除いて、バックグラウンドからForeground Serviceを実行できなくなる ◦ ForegroundServiceStartNotAllowedException • 特別なケース ◦ Notification, Widgetのタップなど ◦ high-priorityのFCMメッセージ ◦ BOOT_COMPLETED、MY_PACKAGE_REPLACEDのブロードキャスト ◦ https://developer.android.com/about/versions/12/foreground-services#cases-fgs-background-starts-allowed Foreground service launch restrictions
22. 22 • 数分以内に完了する短い重要なタスクをすぐに実行 • DozeモードやBattery Saverの影響を受けにくい • WorkManger Expedited jobs
23. 23 val request = OneTimeWorkRequestBuilder<SampleWork>() .setExpedited(OutOfQuotaPolicy.RUN_AS_NON_EXPEDITED_WORK_REQUEST) .build() WorkManager.getInstance(context).enqueue(request) // Worker class SampleWork(...) : CoroutineWorker(...) { override suspend fun doWork(): Result { // ... return Result.success() } override suspend fun getForegroundInfo(): ForegroundInfo { // Android 12未満のときはForeground Service } }
24. Approximate location 24
25. 25 <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
26. Bluetooth permissions 26 <uses-permission android:name="android.permission.BLUETOOTH_SCAN" /> <uses-permission android:name="android.permission.BLUETOOTH_ADVERTISE" /> <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
27. • getPrimaryClip でToast表示される • getPrimaryClipDescription を使って現在のClipboardの情報を取得 Clipboard 27
28. Camera, Mic 28
30. • アプリの休止状態 • ストレージの最適化とキャッシュの削除 • バックグラウンドジョブの停止 • FCMメッセージの受信停止 App hibernation 30
32. Privacy dashboard 32
34. Safer component exporting 34 <activity android:name=".MainActivity" android:exported="true"> <intent-filter> <!-- ... --> </intent-filter> </activity>
35. 35 Manifest merger failed : android:exported needs to be explicitly specified for <activity>. Apps targeting Android 12 and higher are required to specify an explicit value for `android:exported` when the corresponding component has an intent filter defined. Build error message Lint warning When using intent filters, please specify android:exported as well
36. Kenji Abe - Android, Kotlin GDE / DeNA @STAR_ZERO Thank you! https://developer.android.com/about/ve rsions/12 Resources 36