Java tutorial
//package com.java2s; import java.io.ByteArrayOutputStream; import android.graphics.Bitmap; public class Main { public static long getBitmapSize(Bitmap bitmap) { long length = 0; if (bitmap != null) { ByteArrayOutputStream stream = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream); byte[] imageInByte = stream.toByteArray(); length = imageInByte.length; } return length; } }