Compress bitmap to a specific byte size in Android

Question

Is there a way to compress Bitmap to a specific byte size? For example, 1.5MB. The matter is all the examples I have seen so far were resizing width and height, but my requi

Answer 1

See my answer at (Which doesn't use a while loop): How to reduce image size into 1MB

This method works if your current passed Bitmap is in the ARGB_8888 configuration (So 4 bytes per pixel. When it isn't ARGB_8888 you can convert it to that bitmap by using:

/**
 * Convert a Bitmap to a Bitmap that has 4 bytes per pixel
 * @param input The bitmap to convert to a 4 bytes per pixel Bitmap
 * 
 * @return The converted Bitmap. Note: The caller of this method is 
 * responsible for reycling the input
 */
public static Bitmap to4BytesPerPixelBitmap(@NonNull final Bitmap input){
    final Bitmap bitmap = Bitmap.createBitmap(input.width, input.height, Bitmap.Config.ARGB_8888);
    // Instantiate the canvas to draw on:
    final Canvas canvas = new Canvas(bitmap);
    canvas.drawBitmap(input, 0, 0, null);
    // Return the new bitmap:
    return bitmap;  
}