android获取分辨率方法

            DisplayMetrics dm = new DisplayMetrics();
            getWindowManager().getDefaultDisplay().getMetrics(dm);
            int widthPixels= dm.widthPixels;    //320
            int heightPixels= dm.heightPixels;    //533
            float density = dm.density;            //密度1.5
            int screenWidth1 = (int)(widthPixels * density);    //480
            int screenHeight2 = (int)(heightPixels * density);     //799