Capture view and Register to gallery

Transcript

1. Capture view and Register to gallery

2. About me Hikaru Umetsu (@umechanhika) WealthNavi Inc. Individual developer Fav:

   Android & Flutter Individual Job

3. What is “capture”? App screen Image file

4. Overview Capture view File storage access Register to gallery Summary

5. Capture view view.isDrawingCacheEnabled = true val cache = view.drawingCache val

   bitmap = Bitmap.createBitmap(cache) val bitmap = view.drawToBitmap() val canvas = Canvas(bitmap) view.draw(canvas) Deprecated New https://github.com/umechanhika/playground/blob/master/android/AddScreenshotToGallery/app/ src/main/java/com/example/addscreenshottogallery/ui/util/ScreenshotUtil.kt

6. File storage access In this case: MediaStore API Is this

   ... Media file? Yes Shareable? Yes Removed on app uninstalled? No https://developer.android.com/training/data-storage

7. Permission https://developer.android.com/training/data-storage No need on Android 10 or higher <uses-permission

   android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="28" />

8. Register to gallery Android 10 or higher Android 9 or

   lower Create ContentValues Save bitmap Create ContentValues Save bitmap Register to MediaStore Register to MediaStore

9. Register to gallery Android 10 or higher Android 9 or

   lower Create ContentValues Save bitmap Create ContentValues Save bitmap Register to MediaStore Register to MediaStore

10. Register to gallery ContentValues().apply { put(MediaStore.Images.Media.DISPLAY_NAME, "fileName.jpg") put(MediaStore.Images.Media.TITLE, "fileName") put(MediaStore.Images.Media.MIME_TYPE,

    "image/jpeg") put(MediaStore.Images.Media.DATE_ADDED, System.currentTimeMillis() / 1_000) } Create ContentValues https://github.com/umechanhika/playground/blob/master/android/AddScreenshotToGallery/app/ src/main/java/com/example/addscreenshottogallery/ui/util/ScreenshotUtil.kt Common

11. Register to gallery ContentValues().apply { put(MediaStore.Images.Media.DISPLAY_NAME, "fileName.jpg") put(MediaStore.Images.Media.TITLE, "fileName") put(MediaStore.Images.Media.MIME_TYPE,

    "image/jpeg") put(MediaStore.Images.Media.DATE_ADDED, System.currentTimeMillis() / 1_000) } Create ContentValues https://github.com/umechanhika/playground/blob/master/android/AddScreenshotToGallery/app/ src/main/java/com/example/addscreenshottogallery/ui/util/ScreenshotUtil.kt Common

12. Register to gallery ContentValues().apply { put(MediaStore.Images.Media.DISPLAY_NAME, "fileName.jpg") put(MediaStore.Images.Media.TITLE, "fileName") put(MediaStore.Images.Media.MIME_TYPE,

    "image/jpeg") put(MediaStore.Images.Media.DATE_ADDED, System.currentTimeMillis() / 1_000) } Create ContentValues https://github.com/umechanhika/playground/blob/master/android/AddScreenshotToGallery/app/ src/main/java/com/example/addscreenshottogallery/ui/util/ScreenshotUtil.kt Common

13. Register to gallery ContentValues().apply { put(MediaStore.Images.Media.DISPLAY_NAME, "fileName.jpg") put(MediaStore.Images.Media.TITLE, "fileName") put(MediaStore.Images.Media.MIME_TYPE,

    "image/jpeg") put(MediaStore.Images.Media.DATE_ADDED, System.currentTimeMillis() / 1_000) } Create ContentValues https://github.com/umechanhika/playground/blob/master/android/AddScreenshotToGallery/app/ src/main/java/com/example/addscreenshottogallery/ui/util/ScreenshotUtil.kt Common

14. Register to gallery ContentValues().apply { put(MediaStore.Images.Media.DISPLAY_NAME, "fileName.jpg") put(MediaStore.Images.Media.TITLE, "fileName") put(MediaStore.Images.Media.MIME_TYPE,

    "image/jpeg") put(MediaStore.Images.Media.DATE_ADDED, System.currentTimeMillis() / 1_000) } Create ContentValues https://github.com/umechanhika/playground/blob/master/android/AddScreenshotToGallery/app/ src/main/java/com/example/addscreenshottogallery/ui/util/ScreenshotUtil.kt Common

15. Register to gallery Register to MediaStore contentValues.apply { put( MediaStore.Images.Media.RELATIVE_PATH,

    "${Environment.DIRECTORY_PICTURES}/DirectoryName" ) put(MediaStore.MediaColumns.IS_PENDING, 1) } contentResolver.run { uri = insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues) ?: return // ... } Android 10 or higher https://github.com/umechanhika/playground/blob/master/android/AddScreenshotToGallery/app/ src/main/java/com/example/addscreenshottogallery/ui/util/ScreenshotUtil.kt

16. Register to gallery Save bitmap contentResolver.run { uri = insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,

    contentValues) ?: return openOutputStream(uri).use { bitmap.compress(Bitmap.CompressFormat.JPEG, 100, it) } contentValues.put(MediaStore.MediaColumns.IS_PENDING, 0) update(uri, contentValues, null, null) } Android 10 or higher https://github.com/umechanhika/playground/blob/master/android/AddScreenshotToGallery/app/ src/main/java/com/example/addscreenshottogallery/ui/util/ScreenshotUtil.kt

17. Completed

18. Drawing cache is deprecated. Use MediaStore API. No need permission

    on Android 10 or higher Register process is different from Android 10 or higher Summary

19. Thanks!