Preparing Android apps for Android Q.pdf

A look at the changes and features introduced in Android Q and how to adapt and add them to your app.

Transcript

1. Extended Singapore Preparing apps for Android Q Saurabh Arora, Rakuten Viki @saurabh_arora90
2. Where are we? ➢ Decade of Android (10.0) ➢ Beta 4 ➢ Final API’s ➢ API Level 29
3. Extended Singapore What's New
4. Privacy & Security User Experience
5. Extended Singapore Privacy & Security
6. Background Activity Starts ➢ Affects - All apps running on Q (irrespective of target SDK) ➢ Exceptions: ◦ Bound services such as accessibility, auto-fill, etc. ◦ Receives a PendingIntent from system ◦ App had SYSTEM_ALERT_WINDOW permission ◦ App called finish() on activity very recently ➢ Recommended approach - Notification Triggered activity
7. val notificationBuilder = NotificationCompat.Builder(this, CHANNEL_ID) .... .setPriority(NotificationCompat.PRIORITY_HIGH) .setCategory(NotificationCompat.CATEGORY_CALL)
8. val fullScreenIntent = Intent(this, CallActivity::class.java) val fullScreenPendingIntent = PendingIntent.getActivity(this, 0, fullScreenIntent, PendingIntent.FLAG_UPDATE_CURRENT) val notificationBuilder = NotificationCompat.Builder(this, CHANNEL_ID) .... .setPriority(NotificationCompat.PRIORITY_HIGH) .setCategory(NotificationCompat.CATEGORY_CALL) .setFullScreenIntent(fullScreenPendingIntent, true)
9. ➢ Gotcha’s: ◦ System decides b/w notification & activity ▪ Notification - User using the device ▪ Activity - Device Idle / when user interacts with notification ◦ Declare USE_FULL_SCREEN_INTENT permission
10. Hardware Identifiers ➢ Affects - All apps running on Q (irrespective of target SDK) ◦ Exception thrown if Target SDK is Q ◦ null returned if Target SDK < Q ➢ Avoid: ◦ IMEI - TelephonyManager.getDeviceId() ◦ Mac Address ◦ ANDROID_ID - Settings.Secure.ANDROID_ID
11. Hardware Identifiers ➢ Alternatives ◦ Advertising ID ◦ Instance ID - FirebaseInstanceId ◦ Globally-unique IDs (GUIDs) - UUID.randomUUID().toString()
12. Background Location ➢ Distinguish b/w foreground & background ➢ Location permission has 3 options
13. Background Location Requests ➢ Affects - Depends
14. Background Location Requests ➢ Foreground Service ➢ Background Service
15. <service android:name="MyNavigationService" android:foregroundServiceType="location" ... > ... </service>
16. <manifest> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" /> </manifest>
17. ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_BACKGROUND_LOCATION), your-permission-request-code
18. ➢ Gotcha’s: ◦ System schedules reminders ◦ User can revoke permission ◦ Always check access
19. Extended Singapore User Experiences
20. Settings Panel ➢ Bottom sheet for system settings ➢ Encourage app engagement ➢ Currently Supported: ◦ ACTION_INTERNET_CONNECTIVITY ◦ ACTION_WIFI ◦ ACTION_NFC ◦ ACTION_VOLUME ➢ AndroidX wrapper
21. Gesture Navigation
22. Gesture Navigation ➢ Affects - All apps running on Q (irrespective of target SDK) ➢ Recommended approach ◦ Draw Edge to Edge ◦ Override system gestures
23. ➢ Draw Behind Navigation Bar ➢ Draw behind Status bar ➢ Strongly recommended
24. <style name="AppTheme"> ...... <item name="android:navigationBarColor"> @android:color/transparent </item> </style>
25. view.systemUiVisibility = //Layout as if the navigation bar was hidden View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or //Layout as if the status bar was hidden View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN or //Layout at its most extreme View.SYSTEM_UI_FLAG_LAYOUT_STABLE
26. ➢ Overlap with system UI? ➢ Use insets ◦ WindowInsets
27. root.setOnApplyWindowInsetsListener { _, insets -> val fabLp = fab.layoutParams as CoordinatorLayout.LayoutParams fabLp.bottomMargin = fabOriginalBottomMargin + insets.systemWindowInsetBottom fab.layoutParams = fabLp insets.consumeSystemWindowInsets() }
28. ➢ System Window Insets ➢ Clickable Views
29. ➢ System Gesture Insets ◦ New in Android Q ➢ Draggable Views Insets.getSystemGestureInsets()
30. root.setOnApplyWindowInsetsListener { _, insets -> val systemGestureInsets = insets.systemGestureInsets top.layoutParams = top.layoutParams.apply { height = systemGestureInsets.top } bottom.layoutParams = bottom.layoutParams.apply { height = systemGestureInsets.bottom } .... }
31. ➢ Override system gestures ➢ App gets touch event first
32. View.setSystemGestureExclusionRects(List<Rect> rects)
33. ➢ Gotcha’s: ◦ Seekar & Drawer Layout work of the box ◦ Can opt out back gesture ◦ Home is reserved WindowInsets.getMandatorySystemGestureInsets()
34. Dark Mode
35. Dark Mode ➢ A new System Setting ◦ Under Settings->Display->Theme ◦ A Quick tile ◦ Battery Saver Mode ➢ Supported by 1.1 App Compat
36. <!--App Compat Style--> <style name="AppTheme" parent="Theme.AppCompat.DayNight"> <!--Material Components--> <style name="AppTheme" parent="Theme.MaterialComponents.DayNight">
37. <!--values/themes.xml--> <style name="Theme.AppCompat.DayNight" parent="Theme.AppCompat.Light"> <!--values-night/themes.xml--> <style name="Theme.AppCompat.DayNight" parent="Theme.AppCompat">
38. Dark Mode ➢ AppCompatDelegate.setDefaultNightMode() ◦ MODE_NIGHT_YES ◦ MODE_NIGHT_NO ◦ MODE_NIGHT_FOLLOW_SYSTEM ◦ MODE_NIGHT_AUTO_BATTERY
39. ➢ Gotcha’s
40. <ConstraintLayout .... background="#ABABAB"> <TextView .... textColor="#FFFFFF">
41. <ConstraintLayout .... background="@color/foo"> <TextView .... textColor="@color/bar"> <!--values/colors.xml--> <color name="foo">#ABABAB</color>
42. <ConstraintLayout .... background="@color/foo"> <TextView .... textColor="@color/bar"> <!--values/colors.xml--> <color name="foo">#ABABAB</color> <!--values-night/colors.xml--> <color name="foo">#FAFAFA</color>
43. ➢ Gotcha’s: <vector.... android:tint="?attr/textColorNormal"/> ◦ Check drawables and provide night resources ◦ Vectors tint
44. ➢ Gotcha’s: ◦ Test RemoteViews ◦ Configuration Change - uiMode ▪ UI will lose context if not handled properly ▪ Caution single orientation apps ▪ Media apps should handle to continue playback
45. Extended Singapore Not Covered
46. ➢ Sharing improvements ➢ Audio Playback Capture ➢ Bubbles
47. ➢ Non SDK Interfaces ➢ Sharing improvements ➢ Audio Playback Capture ➢ Bubbles
48. Extended Singapore Thank Q Questions?