android获取屏幕长宽，status bar高度，设置全屏显示

//获取屏幕长宽   
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);   
wm.getDefaultDisplay().getHeight();   
wm.getDefaultDisplay().getWidth();   
  
//获取status bar高度   
View rootView  = view.getRootView();   
Rect r = new Rect();   
rootView.getWindowVisibleDisplayFrame(r);   
return r.top;   
  
  
//设置全屏   
//xml   
<style name="style_Fullscreen">   
      <item name="android:windowFullscreen">true</item>   
      <item name="android:windowNoTitle">true</item>   
</style>   
  
//java code   
this.requestWindowFeature(Window.FEATURE_NO_TITLE); this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,   
    WindowManager.LayoutParams.FLAG_FULLSCREEN);