Java tutorial
//package com.java2s; /** * Copyright 2015 YA LLC * <p/> * 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 * <p/> * http://www.apache.org/licenses/LICENSE-2.0 * <p/> * 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 setAlpha(final int color, final int alpha) { final int r = Color.red(color); final int g = Color.green(color); final int b = Color.blue(color); return Color.argb(alpha, r, g, b); } }