去掉标题栏：
requestWindowFeature(Window.FEATURE_NO_TITLE);
API上是这么说的：
int     FEATURE_NO_TITLE     Flag for the "no title" feature, turning off the title at the top of the screen.
屏幕全屏：
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
API上是这么说的：
int     FLAG_FULLSCREEN     Window flag: Hide all screen decorations (e.g.
屏幕没有边界限制(允许窗口扩展到屏幕外)：
getWindow().addFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
API上是这么说的：
int     FLAG_LAYOUT_NO_LIMITS     Window flag: allow window to extend outside of the screen.
用法：
代码如下：

 @Override
     protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
         super.onCreate(savedInstanceState);
         requestWindowFeature(Window.FEATURE_NO_TITLE);
         getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
         getWindow().addFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
         setContentView(R.layout.newslists);
         newsListLayout = findViewById(R.id.newslistlayout);
         newsListLayout.setBackgroundColor(Color.MAGENTA);

         newsNameList = (ListView) findViewById(R.id.newsnamelist);
         model = new Model(0, 6);
         nameListAdapter = new NewsNameListAdapter(this, model);
         newsNameList.setAdapter(nameListAdapter);

         showPage = (TextView) findViewById(R.id.newslistshowpage);
         updatePage(model.getIndex());
     }