public class ActivityMain extends Activity {
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  spark();
 }
 private int clo = 0;
 public void spark() {
  final TextView touchScreen = (TextView) findViewById(R.id.TextView01);// 获取页面textview对象
  Timer timer = new Timer();
  TimerTask taskcc = new TimerTask(){
   public void run() {
    runOnUiThread(new Runnable() {
     public void run() {
      if (clo == 0) {
       clo = 1;
       touchScreen.setTextColor(Color.TRANSPARENT); // 透明
      } else {
       if (clo == 1) {
        clo = 2;
        touchScreen.setTextColor(Color.RED);
       } else {
        clo = 0;
        touchScreen.setTextColor(Color.GREEN);
       }
      }
     }
    });
   }
  };
  timer.schedule(taskcc, 1, 300);
  // 参数分别是delay（多长时间后执行），duration（执行间隔）
 }
}