Capture view and Register to gallery

Transcript

1. Capture view
   and
   Register to gallery
   

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

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

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

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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
   

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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
   

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7. Permission
   https://developer.android.com/training/data-storage
   No need on Android 10 or higher
   android:name="android.permission.WRITE_EXTERNAL_STORAGE"
   android:maxSdkVersion="28" />
   

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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
   

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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
   

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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
    

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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
    

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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
    

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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
    

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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
    

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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
    

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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
    

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17. Completed
    

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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
    

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19. Thanks!
    

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