Java tutorial
//package com.java2s; //License from project: Apache License import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.ColorMatrix; import android.graphics.ColorMatrixColorFilter; import android.graphics.Paint; public class Main { public static Bitmap setBrightness(Bitmap srcBitmap, int brightness) { Bitmap bitmap = Bitmap.createBitmap(srcBitmap); ColorMatrix cm = new ColorMatrix(new float[] { 1, 0, 0, 0, brightness, 0, 1, 0, 0, brightness, 0, 0, 1, 0, brightness, 0, 0, 0, 1, 0 }); Paint paint = new Paint(); paint.setColorFilter(new ColorMatrixColorFilter(cm)); Canvas canvas = new Canvas(bitmap); canvas.drawBitmap(srcBitmap, 0, 0, paint); return bitmap; } }