Java tutorial
//package com.java2s; /* * Jitsi, the OpenSource Java VoIP and Instant Messaging client. * * Copyright @ 2015 Atlassian Pty Ltd * * 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.*; import java.io.*; public class Main { /** * Encodes given <tt>Bitmap</tt> to array of bytes using given * compression <tt>quality</tt> in PNG format. * @param bmp the bitmap to encode. * @param quality encoding quality in range 0-100. * @return raw bitmap data PNG encoded using given <tt>quality</tt>. */ public static byte[] convertToBytes(Bitmap bmp, int quality) { ByteArrayOutputStream bout = new ByteArrayOutputStream(); bmp.compress(Bitmap.CompressFormat.PNG, quality, bout); return bout.toByteArray(); } }