Android - Save image from URL onto SD card

Question

I want to save an image from a URL to the SD card (for future use) and then load that image from the SD card to use it as a drawable overlay for Google maps.

Here is

Answer 1

DownloadManager does all these for you.

public void downloadFile(String uRl) {
    File direct = new File(Environment.getExternalStorageDirectory()
            + "/AnhsirkDasarp");

    if (!direct.exists()) {
        direct.mkdirs();
    }

    DownloadManager mgr = (DownloadManager) getActivity().getSystemService(Context.DOWNLOAD_SERVICE);

    Uri downloadUri = Uri.parse(uRl);
    DownloadManager.Request request = new DownloadManager.Request(
            downloadUri);

    request.setAllowedNetworkTypes(
            DownloadManager.Request.NETWORK_WIFI
                    | DownloadManager.Request.NETWORK_MOBILE)
            .setAllowedOverRoaming(false).setTitle("Demo")
            .setDescription("Something useful. No, really.")
            .setDestinationInExternalPublicDir("/AnhsirkDasarpFiles", "fileName.jpg");

    mgr.enqueue(request);

    // Open Download Manager to view File progress
    Toast.makeText(getActivity(), "Downloading...",Toast.LENGTH_LONG).show();
    startActivity(Intent(DownloadManager.ACTION_VIEW_DOWNLOADS));

}