Java tutorial
//package com.java2s; import android.graphics.Bitmap; import android.graphics.Matrix; public class Main { private static Bitmap small(Bitmap bitmap) { Matrix matrix = new Matrix(); matrix.postScale(0.8f, 0.8f); Bitmap resizeBmp = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true); return resizeBmp; } }