Update TextView Every Second

Question

I've looked around and nothing seems to be working from what I've tried so far...

    @Override protected void onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     setContentView(R.layout.deskclock);      TextView tvTime = (TextView) findViewById(R.id.tvTime);     TextView tvDate = (TextView) findViewById(R.id.tvDate);      java.util.Date noteTS = Calendar.getInstance().getTime();      String time = "hh:mm"; // 12:00     tvTime.setText(DateFormat.format(time, noteTS));      String date = "dd MMMMM yyyy"; // 01 January 2013     tvDate.setText(DateFormat.format(date, noteTS)); 

I basically want the setText methods to update or refresh every second or so, so my clock actually works like it should do. I've seen methods like handlers and run and nothing worked so any help with this would be great thanks. :)

Answer 1

Add following code in your onCreate() method:

Thread thread = new Thread() {    @Override   public void run() {     try {       while (!thread.isInterrupted()) {         Thread.sleep(1000);         runOnUiThread(new Runnable() {           @Override           public void run() {             // update TextView here!           }         });       }     } catch (InterruptedException e) {     }   } };  thread.start(); 

This code starts an thread which sleeps 1000 milliseconds every round.

Answer 2

It's a very old question and I'm sure there are a lot of resources out there. But it's never too much to spread the word to be at the safe side. Currently, if someone else ever want to achieve what the OP asked, you can use: android.widget.TextClock.

TextClock documentation here.

Here's what I've used:

<android.widget.TextClock     android:id="@+id/digitalClock"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:timeZone="GMT+0000" <!--Greenwich -->     android:format24Hour="dd MMM yyyy   k:mm:ss"     android:format12Hour="@null"     android:textStyle="bold"     android:layout_alignParentEnd="true" />