Java tutorial
//package com.java2s; /* * Copyright (C) 2013 Chen Hui <calmer91@gmail.com> * * 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.Canvas; import android.graphics.PorterDuff; public class Main { public static void fillTransparent(Canvas canvas) { canvas.drawColor(0x00000000, PorterDuff.Mode.CLEAR); } }