android获得屏幕高度和宽度

1、

WindowManager wm = (WindowManager) getContext()                    .getSystemService(Context.WINDOW_SERVICE);     int width = wm.getDefaultDisplay().getWidth();     int height = wm.getDefaultDisplay().getHeight();

2、

WindowManager wm = this.getWindowManager();     int width = wm.getDefaultDisplay().getWidth();     int height = wm.getDefaultDisplay().getHeight();