Environment.getExternalStorageDirectory() deprecated in API level 29 java

Question

Working on android Java, recently updated SDK to API level 29 now there is a warning shown which states that

Environment.getExternalStorageDirectory() i

Answer 1

This is a small example how to get URI for a file if you want to take photo using default camera and store it in a DCIM folder (DCIM/app_name/filename.jpg):

Open camera (remember about CAMERA permission):

private var photoURI: Uri? = null

private fun openCamera() {
    Intent(MediaStore.ACTION_IMAGE_CAPTURE).also { takePictureIntent ->
        photoURI = getPhotoFileUri()
        takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI)
        takePictureIntent.resolveActivity(requireActivity().packageManager)?.also {
            startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE)
        }
    }
}

And get URI:

private fun getPhotoFileUri(): Uri {
    val timeStamp = SimpleDateFormat("yyyyMMdd_HHmmss", Locale.getDefault()).format(Date())
    val fileName = "IMG_${timeStamp}.jpg"

    var uri: Uri? = null
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
        val resolver = requireContext().contentResolver
        val contentValues = ContentValues().apply {
            put(MediaStore.MediaColumns.DISPLAY_NAME, fileName)
            put(MediaStore.MediaColumns.MIME_TYPE, "image/jpeg")
            put(MediaStore.MediaColumns.RELATIVE_PATH, "DCIM/app_name/")
        }

        uri = resolver.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues)
    }

    return uri ?: getUriForPreQ(fileName)
}

private fun getUriForPreQ(fileName: String): Uri {
    val dir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM)
    val photoFile = File(dir, "/app_name/$fileName")
    if (photoFile.parentFile?.exists() == false) photoFile.parentFile?.mkdir()
    return FileProvider.getUriForFile(
        requireContext(),
        "ru.app_name.fileprovider",
        photoFile
    )
}

Don't forget about WRITE_EXTERNAL_STORAGE permission for pre Q and add a FileProvider to AndroidManifest.xml.

And get a result:

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)
    when (requestCode) {
        REQUEST_IMAGE_CAPTURE -> {
            photoURI?.let {
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
                    val thumbnail: Bitmap =
                        requireContext().contentResolver.loadThumbnail(
                            it, Size(640, 480), null
                        )
                } else {
                    // pre Q actions
                }
            }
        }
    }
}