1.设置返回键无效

      @Override
      public boolean onKeyDown(int keyCode, KeyEvent event) {

          if (KeyEvent.KEYCODE_BACK == keyCode)  return false;
          return super.onKeyDown(keyCode, event);
     }

 

2. 设置Home键无效

        @Override
       public void onAttachedToWindow() {

           this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);
           super.onAttachedToWindow();
       }


3.设置隐藏状态栏(全屏显示)

    在AndroidManifest.xml文件里的Application节点里加上

    android:theme="@android:style/Theme.NoTitleBar.Fullscreen"