Explore new updates on Android

In this slide, you will find out some key points
1) Android 13 Behaviour, Feature & APIs
2) Features and Improvements from Compose 1.2
3) Apps Adapility for all screen sizes.

Transcript

1. Explore new updates on Android Android 13, Compose, Large Screens Google Developer Expert (Android) Senior Engineer @ Lomotif Su Myat Tun Extended Singapore
2. Android 13 Mar Jul
3. Behaviour changes, new feature & APIs Android 13
4. Opt-in notification permission Applies to all newly installed apps, irrespective of targetSDK. For apps with targetSDK < 33, Android will typically ask for the Notification Permission on first launch. Notification Permission Privacy
5. App can’t send notification until user uninstall and reinstall your app Selects “Don’t allow”
6. Notification Permission <manifest ...> <uses-permission android:name="android.permission.POST_NOTIFICATIONS" /> <application ...> ... </application> </manifest>
7. • Request when user is in-context • Provide rationale before requesting permission • No additional limits on prompting • Check notification access through PermissionChecker, or NotificationManager.areNotificationsEnabled UX - Following Best Practices
8. Highly requested feature! Dismissable FGS Notifications
9. Foreground Services Task Manager • Removes app from memory • Stops media playback • Stops the service, removing associated notification
10. No callback sent when user stop app • REASON_USER_REQUESTED provided in ApplicationExitInfo API
11. Long Running FGS Notification • Invites users to interact with Foreground Services Task Manager
12. Behavior “swipe up” and “force stop”
13. Other Permission Changes
14. • Similar to Bluetooth in Android 12 ◦ Same permission group (NEARBY_DEVICES) • NEARBY_WIFI_DEVICES instead of ACCESS_FINE_LOCATION Updates - Wi-Fi Location Minimization
15. Wi-Fi Location Minimization <manifest ...> <uses-permission android:name="android.permission.NEARBY_WIFI_DEVICES" android:usesPermissionFlags="neverForLocation" /> <application ...> ... </application> </manifest>
16. Wi-Fi Permission - Backward compatibility <manifest ...> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" android:maxSdkVersion="32" /> </manifest>
17. No longer support: • READ_EXTERNAL_STORAGE • WRITE_EXTERNAL_STORAGE Media Permission
18. Instead of READ_EXTERNAL_STORAGE: • READ_MEDIA_IMAGE for images • READ_MEDIA_VIDEO for video • READ_MEDIA_AUDIO for audio Updates - Media Permission
19. If app requests READ_MEDIA_AUDIO: Updates - Audio Permission
20. If app requests both or only one permission at the same time: • READ_MEDIA_IMAGE for images • READ_MEDIA_VIDEO for video Updates - Media Permission
21. Changes - Media Permission <manifest ...> <uses-permission android:name="android.permission.READ_MEDIA_IMAGES" /> <uses-permission android:name="android.permission.READ_MEDIA_AUDIO" /> <uses-permission android:name="android.permission.READ_MEDIA_VIDEO" /> </manifest>
22. Storage Permission - Backward compatibility <manifest ...> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" android:maxSdkVersion="32" /> </manifest>
23. Body Sensor - Need Background Permission <manifest ...> <uses-permission android:name="android.permission.BODY_SENSORS"/> <uses-permission android:name="android.permission.BODY_SENSORS_BACKGROUND"/> <application ...> ... </application> </manifest>
24. Intents - Non-matching Now Blocked Intents are only delivered from external apps to apps targeting Android 13 or higher when they match an <intent-filter> element. There are a few exceptions: • Components without Intent filters • Intents from the system • Intents from root
25. Preview - matching Intent //intent filter must specify <data> element to accept intents with data val intent = Intent(“previewtwo”) intent.data = Uri.parse("https://android.com") startActivity(intent) <receiver android:name=".MyReceiver" android:exported="true"> <intent-filter> <action android:name="previewtwo" /> + <data android:scheme="https" /> </intent-filter> </receiver>
26. Safer Runtime Broadcast Receivers // set new flag while registering a runtime receiver if not SecurityException will be thrown // I want to receive broadcasts from other apps! context.registerReceiver(broadcastReceiver, intentFilter, RECEIVER_EXPORTED); // I don’t want to receive broadcasts from other apps! context.registerReceiver(broadcastReceiver, intentFilter, RECEIVER_NOT_EXPORTED);
27. Battery Life is Important Following options appear in setting: Unrestricted Optimised(default) Restricted
28. Battery Life is Important Restricted: Favor device battery life over app versatility, places more limitations on what app can do in background
29. New Background Rules • When the system places your app in the restricted • What work your app can do when the user places your app in the restricted state. • Check if you’re in one of the restricted states: ◦ ActivityManager.isBackgroundRestricted () ◦ UsageStatsManager.getAppStandbyBuck et()
30. Behavior Changes Summary Without targeting Android 13 • FGS Task Manager • Improved prefetch job handling • Battery resource utilization • Runtime notifications permission • Media controls derived from PlaybackState • In-app language pickers When targeting Android 13 • Nearby Wi-Fi runtime permission • Granular media permissions • Background body sensors permission • Intent filters block non-matching intents • Battery resource utilization
31. Back better, Monochromatic Icon, much more Feature & APIs
32. • Ahead-of-time model allow the system to show preview of the destination • Deprecated KEYCODE_BACK or onBackPressed APIs Predictable Back Gesture
33. <application ... //system will take control and play peaking anim android:enableOnBackInvokedCallback="true"> Optional opt-in flag in the manifest: Android 13 The new back dispatching will be enabled by default for application targeting SDK 34 Android 14 Once the new behavior is enabled, KEYCODE_BACK and onBackPressed() won't be used anymore. Application will have to rely entirely on the OnBackInvokedCallback Jetpack supports the new Back API androidx.activity:activity:1.6.0 Opt in the new behavior
34. Themed App Icons • Inherit the coloring of user’s choonse wallpaper • Requires support for adaptive and monochromatic app icons <adaptive-icon > <background android:drawable="..." /> <foreground android:drawable="..." /> <monochrome android:drawable="@drawable/myicon" /> </adaptive-icon>
35. • Should be VectorDrawable • logo fits within 44 x 44 inside 108 x 188, can up to 72 x 72 • Flag logo Monochromatic icon specifications
36. • System settings let user can selects preferred language for your app, not coupling with System language • API that let apps set different language at runtime Per-app Local Preferences
37. In-app language pickers AndroidManifest.xml <application … android:localeConfig="@xml/locales_config"/> res\xml\locales_config.xml <?xml version="1.0" encoding="utf-8"?> <locale-config> <locale android:name="en-us" /> <locale android:name="ja" /> <locale android:name="fr" /> </locale-config>
38. In-app Local Perference val appLocale: LocaleListCompat = LocaleListCompat.forLanguageTags("fr") // Call this on the main thread as it may require Activity.restart() AppCompatDelegate.setApplicationLocales(appLocale) //get in-app local language Val appLocale = AppCompatDelegate.getApplicationLocales() Update in-app local language
39. • Recommended way to access user’s photos and videos • No runtime permissions • Better UX to access photos & videos • Continuously improved through Google Play System Updates • Backported to Android 11 & 12 • Will soon include cloud photos and albums Photo Picker
40. Using the Photo Picker // Launches photo picker in single-select mode. // This means that the user can select one photo or video. val intent = Intent(MediaStore.ACTION_PICK_IMAGES) startActivityForResult(intent, PHOTO_PICKER_REQUEST_CODE)
41. Using the Photo Picker // Launches photo picker in multi-select mode. // This means that the user can select multiple photos/videos, up to the limit. // specified by the app in the extra (10 in this example). val maxNum = 10 val intent = Intent(MediaStore.ACTION_PICK_IMAGES) intent.putExtra(MediaStore.EXTRA_PICK_IMAGES_MAX,maxNum) startActivityForResult(intent, PHOTO_PICKER_MULTI_SELECT_RC)
42. Handle the Photo Picker results // onActivityResult() handles callbacks from the photo picker. override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent) { when(resultCode) { PHOTO_PICKER_REQUEST_CODE -> { // Get photo picker response for single select. val currentUri: Uri = data.data return } PHOTO_PICKER_MULTI_SELECT_RC -> { // Get photo picker response for multi select. var results = data.clipData return }
43. Downgradeable Permissions // Downgrade single permission @RequiresApi(33) fun revokeSelfPermissionOnKill(permName: String): Unit // Downgrade permission group @RequiresApi(33) fun revokeSelfPermissionOnKill(permissions:MutableCollection<String!>): Unit
44. • Copy and Past UI to Clipboard • Provides a preview of the copied content • Sensitive content to clipboard • Programmable Shaders Other changes
45. Text View, Layout, Tools Features and Improvement in Compose
46. Downloadable Fonts Font Padding Text Magnifer Text improvements Compose 1.2
47. Compose 1.2 Downloadable Fonts @OptIn(ExperimentalTextApi::class) val provider = GoogleFont.Provider( providerAuthority = "com.google.android.gms.fonts", providerPackage = "com.google.android.gms", certificates = R.array.com_google_android_gms_fonts_certs) val fontName = GoogleFont("Lobster Two") val fontFamily = FontFamily(Font(googleFont = GoogleFont(fontName), fontProvider = provider))
48. Compose 1.2 Text( text = myText, style = TextStyle( lineHeight = 2.5.em, platformStyle = PlatformTextStyle( includeFontPadding = false ), lineHeightStyle = LineHeightStyle( alignment = Alignment.Center, trim = Trim.None ) ) ) Set includeFontPadding true to left vs right fase and LineHeightSytle
49. Text Magnifier able to select text easier Compose 1.2
50. Lazy Layouts Nested Scrolling Window insets Shared Element Transitions Layout improvements Compose 1.2
51. Lazy Layouts Develop gradually with the grid APIs LazyVerticalGrid and LazyHorizontalGrid Compose 1.2 @Composable fun FavoriteCollectionsGrid( modifier: Modifier = Modifier ) { LazyHorizontalGrid( rows = GridCells.Fixed(2), modifier = modifier ) { items(favoriteCollectionsData) { item -> FavoriteCollectionCard(item.drawable, item.text) } } }
52. Nested Scrolling Interop Scrolling composable in Coordinator layout is much smoother Things like Collapsing Toolbar are easy to set up Compose 1.2
53. Window insets Graduated from Accompanist to Compose Foundation Compose 1.2
54. Shared Element Transitions WIP
55. Tools Live Edit Recomposition debugging
56. Live Edit Immediately reflected code changes
57. Recomposition debugging
58. Android 12L & 13, developer resources, Multi-tasking, jetpack collection libraries apps adaptability for all screen sizes
59. Material guidelines https://goo.gle/large-screens-guidelines App quality guidelines https://goo.gle/ls-app-quality Compatibility checklist https://goo.gle/ls-checklist Quality matters
60. Android 12L & 13 Improved taskbar for app switching Allow Drag and Drop Resizable Window Don’t assume your app will be only used in a certain orientation Don’t assume your app will be only used through a touch screen Multi-window by default Compatibility mode Input support
61. a lot of broken assumptions means a lot of code to be changed in your app? Development Changes
62. Jetpack WindowManager: stable release, provide common API surface for supporting different device types, starting with foldables and tablet Window Metrics: access currentWindowMetric, maxWindowMetric in advance Window size classes: provide opinionated layout breakpoints for you to know how to adapt your UI based on screen size, partition as compact, medium, expended Activity embedding: allows displaying two Activities simultaneously, with each taking up a portion of the window. SlidingPaneLayout: Places content side by side if the window size allows Resizable and desktop emulators Large Screens made easy
63. Thank you! Google Developer Expert (Android) Senior Engineer @ Lomotif @su_myat_tun Su Myat Tun Extended Singapore