WindowManager

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今天用到WindwoManager来获取屏幕宽高分辨率，顺便查了下还有那些主要用途

DisplayMetrics dmetrics=new DisplayMetrics();getWindowManager().getDefaultDisplay().getMetrics(dmetrics);mScreenHeight=dmetrics.heightPixels;mScreenWidth=dmetrics.widthPixels;mDensity=dmetrics.density;

使用WindowMananger直接向窗口添加View

 1 wm = (WindowManager)getSystemService("window"); 2          WindowManager.LayoutParams params = new WindowManager.LayoutParams(); 3          params.type = WindowManager.LayoutParams.TYPE_PHONE; 4          params.format = PixelFormat.TRANSPARENT; 5          params.alpha = 1.0f; 6          params.flags = WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL | 7                  WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE; 8          params.width = 400  ; 9          params.height = 100 ;12          wm.addView(playView, params);

WindowMananger的两种获取方式

        WindowManager wm1=getWindowManager();        WindowManager wm2=(WindowManager)getSystemService(Context.WINDOW_SERVICE);        Log.i("mi", "wm1==wm2:"+(wm1==wm2));//结果为true

WindowManager Service 是全局的，是唯一的。它将用户的操作，翻译成为指令，发送给呈现在界面上的各个Window。

博文http://blog.csdn.net/chenyafei617/article/details/6577940对WindowManager.LayoutParam做了详细的介绍。

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