TextSwitcher的用法

public class MainActivity extends Activity implements ViewSwitcher.ViewFactory, View.OnClickListener{ 
    int count = 0; 
    private TextSwitcher textSwitcher; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.activity_main); 
        setTitle("文字轉換器"); 
         
        Button button=(Button) findViewById(R.id.button1); 
        textSwitcher=(TextSwitcher) findViewById(R.id.textSwitcher1); 
        //指定轉換器的viewSwitcher.viewFactory,提供轉換所用的view 
        textSwitcher.setFactory(this); 
        //若是不用switcher.setFactory()方法設置轉換時的View，也能夠調用兩次switcher.addView(view,index,params)；    
        /*TextView textView1=new TextView(this); 
        TextView textView2=new TextView(this); 
        textSwitcher.addView(textView1, 0,new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT)); 
        textSwitcher.addView(textView2, 1,new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));*/ 
        //爲view轉換時設置動畫（可選） 
        Animation animation1=AnimationUtils.loadAnimation(getApplicationContext(), R.anim.anim1); 
        Animation animation2=AnimationUtils.loadAnimation(getApplicationContext(), R.anim.anim2); 
        textSwitcher.setInAnimation(animation1); 
        textSwitcher.setOutAnimation(animation2); 
         
        button.setOnClickListener(this); 
        setCount(); 
    } 
    //重寫ViewSwitcher.ViewFactory的makeView方法，返回一個view做轉換時用 
    @Override 
    public View makeView() { 
        // TODO Auto-generated method stub 
        TextView textView=new TextView(MainActivity.this); 
        textView.setGravity(Gravity.TOP|Gravity.CENTER_HORIZONTAL); 
        return textView; 
    } 
     
    @Override 
    public void onClick(View v) { 
        // TODO Auto-generated method stub 
        count++; 
        setCount(); 
    } 
    private void setCount() { 
        // TODO Auto-generated method stub 
        textSwitcher.setText(String.valueOf(count)); 
    } 
}