【Android】save bitmap to localtion. From http://stackoverflow.com/questions/649154/save-bitmap-to-location

example.java

// get bitmap from ImageView
Bitmap bmp = ((BitmapDrawable)image.getDrawable()).getBitmap();

FileOutputStream out = null;
try {
    out = new FileOutputStream(filename);
    bmp.compress(Bitmap.CompressFormat.PNG, 100, out); // bmp is your Bitmap instance
    // PNG is a lossless format, the compression factor (100) is ignored
} catch (Exception e) {
    e.printStackTrace();
} finally {
    try {
        if (out != null) {
            out.close();
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}