android update textview for every 30 seconds

Question

I want to start a timer from 0th second and for every 30 seconds,

I need to update the textview as 0.5min, 1.0min, 1.5min etc.

How do I do this?

http://stackoverflow.com/questions/34261910/display-arrray-of-strings-in-same-textview-with-a-time-interval-of-5-seconds/34263567#34263567 may be use this as base. — Dhinakaran Thennarasu, Jul 05 '16 at 08:51

Amit Vaghela · Accepted Answer · 2016-10-01T10:20:11.530

1

Try this code,

  final Handler h = new Handler();
            h.post(new Runnable() {
                @Override
                public void run() {

                    long millis = (long) currentTime();

                    dateAndTime.setText(getDate(millis, "dd/MM/yyyy hh:mm:ss.SSS"));

                    h.postDelayed(this, 1000);
                }
            });

edited Oct 01 '16 at 10:20

answered Jul 05 '16 at 08:52

Amit Vaghela

22,772
22
86
142

How do i get my incremented values for the textview? – Samuel909 Jul 05 '16 at 08:58
what do you mean by increamented value in textview ? – Amit Vaghela Jul 05 '16 at 09:00
I mean in your code inside run(), what value should I assign to my tetxview so that it displays the incremented value like 0.5min,1.0min etc – Samuel909 Jul 05 '16 at 09:01
check updated answer@Samuel909 – Amit Vaghela Jul 05 '16 at 09:29

score 0 · Answer 2 · answered Jul 05 '16 at 09:08

We can use an handler to handle that.

You can define as below

Handler mHandler = new Handler(new Handler.Callback() {
    @Override
    public boolean handleMessage(Message msg) {
        // write your code update textview

        mHandler.sendEmptyMessageDelayed(0, 30000);
        return true;

    }
})

This handler will auto send and update the text again. You also need insert your code to update time for TextView.

Don't forget call the handler in the first time: mHandler.sendEmptyMessage(0);

android update textview for every 30 seconds

2 Answers2