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Old October 30th, 2010, 01:26 PM   #1 (permalink)
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Lightbulb Please help with Handler class to update UI

Hi Everyone, I am hoping you can help me:

I need to update my ui for an android app and I'm trying to use the Handler class to do it, using Updating the UI from a Timer | Android Developers and Common Tasks and How to Do Them in Android | Android Developers as guides.

Basically, I need something between the two - a timed update of the user interface, but without a button. So here is the relevent code that I am working on. All help is greatly appreciated.

public class Activity1 extends Activity {

[ variables]

final Handler mHandler = new Handler();

final Runnable mUpdateResults = new Runnable() {
public void run() {

mHandler.postDelayed(mUpdateResults, 200);

/** Called when the activity is first created. */
public void onCreate(Bundle savedInstanceState) {




protected void startLongRunningOperation() {

Thread t = new Thread() {
public void run() {
if (mStartTime == 0L) {
mStartTime = System.currentTimeMillis();
mHandler.postDelayed(mUpdateResults, 200);}

Thanks again!

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