Java tutorial
//package com.java2s; import android.graphics.Bitmap; import android.graphics.Matrix; public class Main { private static Bitmap resizeBitmap(Bitmap bmp, float width, float height) { float xscale = width / bmp.getWidth(); float yscale = height / bmp.getHeight(); Matrix matrix = new Matrix(); // resize original image matrix.postScale(xscale, yscale); Bitmap dstbmp = Bitmap.createBitmap(bmp, 0, 0, bmp.getWidth(), bmp.getHeight(), matrix, true); return dstbmp; } }