Android 获取手机银幕大小两种方法

public  Point getDisplayMetrics() {        DisplayMetrics dm = new  DisplayMetrics();        dm = getApplicationContext().getResources().getDisplayMetrics();        int  screenWidth = dm.widthPixels;        int  screenHeight = dm.heightPixels;        return   new  Point(screenWidth ,screenHeight );    }

public  Point getDisplayScreen() {        WindowManager windowManager = getWindowManager();       Display display = windowManager.getDefaultDisplay();       screenWidth  = display.getWidth();       screenHeight = display.getHeight();       return   new  Point(screenWidth ,screenHeight );    }