android 定时发送短信

package irdc.wjl;
 
import java.util.Timer;
import java.util.TimerTask;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.telephony.SmsManager;
import android.util.Log;
 

public class AndroidTimerDemo extends Activity {
  protected static final int UPDATE_TEXT = 0;

  private Timer mTimer;
  private TimerTask mTimerTask;
  private Handler mHandler;


  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
      mTimer = new Timer();

      mHandler = new Handler(){
          public void handleMessage(Message msg) {
              switch (msg.what){
              case UPDATE_TEXT:
                
                  SmsManager manager = SmsManager.getDefault();
                  manager.sendTextMessage("5556", null, "woshiwojiali", null, null);
               
                  
                  break;
              }
          }
      };

      mTimerTask = new TimerTask() {

          @Override
          public void run() {
              Log.d("AndroidTimerDemo", "timer");
              mHandler.sendEmptyMessage(UPDATE_TEXT);
       
              }
      };

      mTimer.schedule(mTimerTask, 10000, 10000);
  }
}

 这是一个定时发送短信的代码，