Java tutorial
//package com.java2s; /* * Project: NextGIS mobile apps for Compulink * Purpose: Mobile GIS for Android * Authors: Dmitry Baryshnikov (aka Bishop), polimax@mail.ru * NikitaFeodonit, nfeodonit@yandex.com * ***************************************************************************** * Copyright (C) 2014-2015 NextGIS * * 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 3 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, see <http://www.gnu.org/licenses/>. */ import android.graphics.Bitmap; import android.graphics.Matrix; public class Main { public static Bitmap getResizedBitmap(Bitmap bm, int newWidth, int newHeight) { int width = bm.getWidth(); int height = bm.getHeight(); float scaleWidth = ((float) newWidth) / width; float scaleHeight = ((float) newHeight) / height; if (scaleWidth < scaleHeight) { scaleHeight = scaleWidth; } else { scaleWidth = scaleHeight; } // create a matrix for the manipulation Matrix matrix = new Matrix(); // resize the bit map matrix.postScale(scaleWidth, scaleHeight); // "recreate" the new bitmap return Bitmap.createBitmap(bm, 0, 0, width, height, matrix, false); } }