Android save pictures and refresh album (no permission required)

1. Background

Save pictures before. Before Android 11, I would apply for the WIRITE permission. After 11, I would apply for the MANAGE_EXTERNAL_STORAGE permission. This permission will authorize reading and writing all shared storage content, which will also include non-media type files. But when Google put it on the shelves, MANAGE_EXTERNAL_STORAGE was a sensitive permission, and I needed to make a statement to Google. I did it, but it failed. Google said that I could save it without this permission. It seemed that I was ignorant, so I did some research and found out. The following method.

2. Realization

    @SuppressLint("UseCompatLoadingForDrawables")
    @AfterPermissionGranted(200)
    fun saveFreshAppImageToGallery(context: PreViewActivity, imageResId: Int) {
        val drawable = context.getDrawable(imageResId)

        if (drawable is BitmapDrawable) {
            val bitmap = drawable.bitmap
            val displayName = "${System.currentTimeMillis()}.jpg"

            val values = ContentValues().apply {
                put(MediaStore.Images.Media.DISPLAY_NAME, displayName)
                put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg")
                put(MediaStore.Images.Media.DATE_ADDED, System.currentTimeMillis() / 1000)
            }

            val contentResolver = context.contentResolver
            val collection =
                MediaStore.Images.Media.getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY)
            val item = contentResolver.insert(collection, values)

            item?.let { uri ->
                try {
                    val outputStream = contentResolver.openOutputStream(uri)
                    bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream)
                    outputStream?.close()
                    Toast.makeText(context, "Save successfully!", Toast.LENGTH_SHORT).show()
                    val mediaScanIntent = Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE)
                    mediaScanIntent.data = uri
                    context.sendBroadcast(mediaScanIntent)
                } catch (e: Exception) {
                    Toast.makeText(context, "Save Failed!", Toast.LENGTH_SHORT).show()
                    e.printStackTrace()
                }
            }
        }
    }

Among them: the logic of notifying the album to refresh is the following code

val mediaScanIntent = Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE)
mediaScanIntent.data = uri
context.sendBroadcast(mediaScanIntent)

Or the following method

    private fun saveToGallery(photoFile: File) {
        val contentValues = ContentValues().apply {
            put(MediaStore.Images.Media.DISPLAY_NAME, "photo.jpg")
            put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg")
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
                put(MediaStore.Images.Media.IS_PENDING, 1)
            }
        }

        val contentResolver = contentResolver
        val collectionUri = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
            MediaStore.Images.Media.getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY)
        } else {
            MediaStore.Images.Media.EXTERNAL_CONTENT_URI
        }

        val imageUri = contentResolver.insert(collectionUri, contentValues)

        imageUri?.let { uri ->
            try {
                contentResolver.openOutputStream(uri)?.use { outputStream ->
                    val inputStream = FileInputStream(photoFile)
                    inputStream.copyTo(outputStream)
                    inputStream.close()
                    outputStream.close()
                }
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
                    contentValues.clear()
                    contentValues.put(MediaStore.Images.Media.IS_PENDING, 0)
                    contentResolver.update(uri, contentValues, null, null)
                }
            } catch (e: IOException) {
            }
        }
    }

The principles are the same