Java tutorial
//package com.java2s; import android.content.ContentResolver; import android.graphics.*; import android.graphics.BitmapFactory.Options; import android.net.Uri; import java.io.*; public class Main { public static void decodeSize(ContentResolver contentResolver, Uri uri, Point out) throws IOException { Options opts = new Options(); opts.inJustDecodeBounds = true; BitmapFactory.decodeStream(contentResolver.openInputStream(uri), null, opts); out.set(opts.outWidth, opts.outHeight); } }