Java tutorial
//package com.java2s; /***************************************************************************** * BitmapUtil.java ***************************************************************************** * Copyright 2011-2014 VLC authors and VideoLAN * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ import android.content.Context; import android.graphics.Bitmap; public class Main { public static Bitmap scaleDownBitmap(Context context, Bitmap bitmap, int width) { /* * This method can lead to OutOfMemoryError! * If the source size is more than twice the target size use * the optimized version available in AudioUtil::readCoverBitmap */ if (bitmap != null) { final float densityMultiplier = context.getResources().getDisplayMetrics().density; int w = (int) (width * densityMultiplier); int h = (int) (w * bitmap.getHeight() / ((double) bitmap.getWidth())); bitmap = Bitmap.createScaledBitmap(bitmap, w, h, true); } return bitmap; } }