Java tutorial
//package com.java2s; import android.graphics.Bitmap; import android.graphics.Matrix; public class Main { public static Bitmap zoomBitmap(Bitmap bitmap, int width, int height) { int w = bitmap.getWidth(); int h = bitmap.getHeight(); Matrix matrix = new Matrix(); matrix.postScale((float) width / w, (float) height / h); return Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true); } }