Android 上下滚动TextSwitcher实例详解

Android 上下滚动TextSwitcher实例详解

1.在activity中需要代码声明

textSwitcher = (TextSwitcher)findViewById(R.id.text_switcher);     textSwitcher.setFactory(new ViewFactory() {              @Override       public View makeView() {         TextView tv = new  TextView(MainActivity.this);         tv.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 16.0F);         tv.setTextColor(Color.RED);         return tv;       }     });          textSwitcher.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.anim_in));     textSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.anim_out));

2.两个anim动画xml

<?xml version="1.0" encoding="utf-8"?>

<?xml version="1.0" encoding="utf-8"?>

3.用线程或者定时器实现循环翻动。

Thread t = new Thread(new Runnable() {          @Override     public void run() {       while (!flag) {         Message msg = new Message();         msg.what = 1;         msg.obj = getItem[i];         handler.sendMessage(msg);         if (i== 2) {           i = 0;         }         try {           t.sleep(3000);           i++;                    } catch (InterruptedException e) {           // TODO Auto-generated catch block           e.printStackTrace();         }       }            }

4.hanlder更新ui

private Handler handler = new Handler(){     public void handleMessage(android.os.Message msg) {              textSwitcher.setText((String)msg.obj);              super.handleMessage(msg);     };   };

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