Java tutorial
//package com.java2s; /* * Copyright (C) 2010 Gandulf Kohlweiss * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import android.graphics.Color; public class Main { public static int brighter(int color, float factor) { float[] hsv = new float[3]; Color.colorToHSV(color, hsv); hsv[2] *= (1f + factor); // value component for (int i = 1; i < hsv.length; i++) { hsv[i] = Math.min(1.0f, hsv[i]); } color = Color.HSVToColor(hsv); return color; } public static int brighter(int color) { return brighter(color, 0.2f); } }