实现走马灯效果

    很简单，引用别人的方法，不用设置xml，代码直接实现

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        TextView v=new TextView(this);
        v.setText("哇哈哈哇哈哈哇哈哈哇哈哈哇哈哈 wahahawahhahwahhahahwahahhahahawhahzvhaha......");  
        v.setTransformationMethod(SingleLineTransformationMethod.getInstance());  
        v.setSingleLine(true);  
        v.setEllipsize(TruncateAt.MARQUEE);  
        v.setMarqueeRepeatLimit(3);  
        setContentView(v);  
        v.setFocusable(true);
    }