Android 使用定时器在指定日期及时间执行任务

 public class MainActivity extends Activity {

     private Handler handler = new Handler(){
         @Override
         public void handleMessage(Message msg) {
             switch (msg.what){
                 case :
                     Log.i("print","执行了");
                     //需要执行的代码放这里
                     break;
             }
         }
     };

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);

         TimerTask task = new TimerTask() {
             @Override
             public void run() {
                 handler.sendEmptyMessage();
             }
         };
         Timer timer = new Timer(true);
         timer.schedule(task,strToDateLong("2017-01-09 11:32:00"));
     }

     /**
      * string类型时间转换为date
      * @param strDate
      * @return
      */
     public static Date strToDateLong(String strDate) {
         SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
         ParsePosition pos = new ParsePosition();
         Date strtodate = formatter.parse(strDate, pos);
         return strtodate;
     }
 }

转自http://blog.csdn.net/Corey_Jia/article/details/51672274