Java tutorial
//package com.java2s; //License from project: Apache License import android.graphics.Bitmap; import android.graphics.Matrix; public class Main { public static Bitmap scale(Bitmap bitmap, float scale) { Matrix matrix = new Matrix(); matrix.postScale(scale, scale); Bitmap outBitmap = Bitmap.createBitmap(bitmap, 0, 0, (int) (bitmap.getWidth()), (int) (bitmap.getHeight()), matrix, true); bitmap.recycle(); return outBitmap; } }