获取屏幕宽高

 //获取屏幕宽高
        DisplayMetrics displayMetrics = getResources().getDisplayMetrics();
        float density = displayMetrics.density;
        int widthPixels = displayMetrics.widthPixels;  //宽
        int heightPixels = displayMetrics.heightPixels; //高
        Log.e(TAG, "onCreate: " + widthPixels + ".........." + heightPixels );