Java tutorial
//package com.java2s; /* * Copyright (C) 2012 The Android Open Source Project * * 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.BitmapFactory; public class Main { /** * Returns Width or Height of the picture, depending on which size is smaller. Doesn't actually * decode the picture, so it is pretty efficient to run. */ public static int getSmallerExtentFromBytes(byte[] bytes) { final BitmapFactory.Options options = new BitmapFactory.Options(); // don't actually decode the picture, just return its bounds options.inJustDecodeBounds = true; BitmapFactory.decodeByteArray(bytes, 0, bytes.length, options); // test what the best sample size is return Math.min(options.outWidth, options.outHeight); } }