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 1:
                    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(1);
            }
        };
        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(0);
        Date strtodate = formatter.parse(strDate, pos);
        return strtodate;
    }
}

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