Question

I am trying to create an event in Android and when the time of the scedules event is reach, I want to display an alert box, ring and vibrate the phone. Can someone please help on this?
Thanks

Answer 1

From the Handler class documentation

Scheduling messages is accomplished with the post(Runnable),
postAtTime(Runnable, long), postDelayed(Runnable, long),
sendEmptyMessage(int), sendMessage(Message),
sendMessageAtTime(Message, long), and sendMessageDelayed(Message,
long) methods. The post versions allow you to enqueue Runnable objects
to be called by the message queue when they are received; the
sendMessage versions allow you to enqueue a Message object containing
a bundle of data that will be processed by the Handler’s
handleMessage(Message) method (requiring that you implement a subclass
of Handler).

More information can be found here. In your case it seems that you need either postAtTime or postDelayed. The code would look something like

new Handler().postDelayed(new Runnable() {
    public void run() {
        //show alert, vibrate and ring..
    }
}, 10000);//execute this Runnable in 10 sec