That's your Q / 10

The API changes in Android 10, how would it affect existing applications, and ways to adapt to those changes

Transcript

1. That’s Your /hsm59
2. Oh no wait, it’s 10
3. Or, Android X. Maybe.
4. Things we’ll talk about > Scoped Access Framework > Media Store > Location Access Restrictions > Other noticeable changes that might break your apps / or not..
5. Storage Access Framework or Scoped Storage All apps will be affected in Android R / 11 / XI If uses-permission == READ_EXTERNAL_STORAGE AND / OR uses-permission == WRITE_EXTERNAL_STORAGE
6. Introducing the Filter Android 1.0 to 9.0 - access filesystem with permission Android 4.4 - access parts without permission - context.getExternalFilesDir() Android 10 (Opt) - 11 - changes this behavior completely
7. What your app sees? context.getExternalFilesDir() And context.getExternalCacheDir() Environment.getExternalStorageDirectory() And Environment.getExternalStoragePublicDirectory()
8. What other apps see? What the users will see?
9. Opt out - Android 10 android:requestLegacyExternalStorage="true" To your <application> element in your manifest Storage behavior for when your app runs on Q / 10 if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q && Environment.isExternalStorageLegacy())
10. Adapting to Scoped Storage Consuming content - ACTION_OPEN_DOCUMENT startActivityForResult( Intent(Intent.ACTION_OPEN_DOCUMENT).apply { addCategory(Intent.CATEGORY_OPENABLE); type = "*/*" },REQUEST_DOC)
11. Adapting to Scoped Storage Inbound actions - ACTION_VIEW AND ACTION_SEND Creating content - FileSystem AND ACTION_CREATE_DOCUMENT Sharing content - FileProvider AND MediaStore
12. But I need a File.. Not everything can work with Uri Option #1 - API Supports File like System Option #2 - Ask User to Put it in App-Specific location Option #3 - Copy stream to Local File
13. Removing support for Files file:Uri android:scheme=”file” While if you use https and content schemes it will still be supported in targetSdkVersion <= 29
14. Unfortunately neither <data> nor <intent-filter> have an android:enabled option that we can use. Make changes to the <activity-alias> instead. Deprecations StorageVolume.createAccessIntent()
15. Media Store > What not to do
16. Media Store > What you can do - Query the _ID Column - Use ContentUris.withAppendedId() to assemble a Media Store Uri from base Uri for the type of content
17. Media Store - Permissions > Writing own content - No Permissions > Consuming content added to MediaStore by others - READ_EXTERNAL_STORAGE RecoverableSecurityException which has RemoteAction
18. MediaStore > Consume Media Option #1 - Ask some other app to open it Option #2 - Query it yourself > Creating Media Changes behavior only on Q / 10
19. Option #1 - Ask some other app ACTION_PICK ACTION_GET_CONTENT ACTION_OPEN_DOCUMENT
20. Option #2 - Query it yourself > Get root Uri - MediaStore.Audio.Media.EXTERNAL_CONTENT_URI MediaStore.Image.Media.EXTERNAL_CONTENT_URI MediaStore.Video.Media.EXTERNAL_CONTENT_URI OR if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) MediaStore.Video.Media.getContentUri(MediaStore.VOLUME_EXTERNAL) else MediaStore.Video.Media.EXTERNAL_CONTENT_URI
21. Creating Media Previously - write media to file - get MediaStore to index it - using MediaScannerConnection Now - use insert() on ContentResolver - returns Uri ContentValues that you wish to add DISPLAY_NAME and MIME_TYPE Android Q / 10 also offers RELATIVE_PATH - controlling where the media goes on the device.
22. Deprecations > MediaStore.MediaColumns > ORIENTATION, DURATION, DATE_TAKEN Additions > MediaStore.Downloads
23. Location Access Restrictions > App in foreground - goes temporarily in the background > App completely in the background > EXIF Metadata Redaction
24. App in Foreground Start a Foreground Service android:foregroundServiceType="location" on its <service> manifest element Service will continue receiving updates
25. App in Background New Permission - ACCESS_BACKGROUND_LOCATION The user winds up with three basic options in terms of granting rights to your app: • Unfettered access to location • “Only while the app is in use”, which translates to “only while the app has UI in the foreground” • No access at all
26. EXIF Metadata Redaction > JPEG Images - Tags - Eg. Orientation > Geotagged - EXIF Tags > MediaStore - Acc to Documentation - Your app needs to hold the ACCESS_MEDIA_LOCATION permission (which is dangerous and needs to go through runtime permissions) - Your app needs to call MediaStore.setRequireOriginal(), supplying the Uri for which you would like the location — this method then returns a decorated Uri that can be used with openInputStream()
27. Stuff that might break your app.. > Background Activity Starts are Banned - Foreground service cannot startActivity() - Pending Intent tied to a Notification can startActivity() Alternative > High importance - high priority Notification > setFullScreenIntent(pi, true) > You need to request the USE_FULL_SCREEN_INTENT permission.
28. Stuff that might break your app.. > Non-SDK Interfaces - Class.forName(), getConstructor(), getField() - StrictMode > SYSTEM_ALERT_WINDOW Restrictions > Background Clipboard Access Banned, unless - They are the default input method editor, or - They are “the app that currently has focus”
29. Stuff that might break your app.. > ContactsContract Field Deprecations - ContactsContract.ContactOptionsColumns.LAST_TIME_CONTACTED - ContactsContract.ContactOptionsColumns.TIMES_CONTACTED - ContactsContract.DataUsageStatColumns.LAST_TIME_USED - ContactsContract.DataUsageStatColumns.TIMES_USED
30. Stuff that might break your app.. > android:sharedUserId Deprecated > DownloadManager Deprecations - addCompletedDownload() - allowScanningByMediaScanner() on DownloadManager.Request - setVisibleInDownloadsUi() on DownloadManager.Request > More Densities - 140, 180, 200, 220 - Only care if DENSITY_ constants on DisplayMetrics
31. Stuff that might interest you.. > Preference Deprecation - (Eg EditTextPreference, ListPreference) > ACTION_SEND Previews - Add EXTRA_TITLE to the ACTION_SEND Intent, with some text to appear as the title of the preview - Add a ClipData to the ACTION_SEND Intent, via setClipData(), that represents the image to show as part of the preview
32. Stuff that might interest you.. > Settings Panel - Settings.Panel.ACTION_INTERNET_CONNECTIVITY - Settings.Panel.ACTION_NFC - Settings.Panel.ACTION_VOLUME - Settings.Panel.ACTION_WIFI
33. Stuff that might interest you.. > Roles / RoleManager - You need to have stuff in the manifest to be eligible for it - You need to have code to detect if you have the role — and if not, to ask the user to grant you the role - The user can grant or revoke roles at any point (e.g., via the Settings app) - The role helps determine what your app can do - Only a single app can have it
34. Stuff that might interest you.. > Roles / RoleManager - - <intent-filter> - <category android:name="android.intent.category.DEFAULT" />, to declare your wish to be the default app for the role - A second <category> element tied to the specific role - isRoleAvailable() - isRoleHeld() - createRequestRoleIntent()
35. There’s a lot more.. > Share Targets > Dark Mode > Gesture Navigation > Deep Presses > Bubbles
36. References > Android Developers Blog - https://developer.android.com/preview/feature > Videos - - https://www.youtube.com/watch?v=L7zwfTwrDEs - https://www.youtube.com/watch?v=oYyf5yMVZZs - https://www.youtube.com/watch?v=OCHEjeLC_UY
37. Thank
38. uestions? /hsm59