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POUpdating UI Activity in Thread
 

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    <p>here is my problem. I am programming an android app, which needs to display the time the activity it is running. Therefor I created a new Thread which is called from the activity. However when I start the app in the emulator, it seems the Activity is never loaded. Maybe you guys can help me here. Here is the relevant code:</p> <pre><code>public class ActivityStartTracker extends ActivityBasic { TimerThread timer; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.start); timer = new TimerThread(); } protected void onResume() { super.onResume(); registerReceiver(broadcastReceiver, new IntentFilter( ServiceLocator.BROADCAST_ACTION)); timer.run(); } protected void onPause() { super.onPause(); unregisterReceiver(broadcastReceiver); if (timer.isRunning()) { timer.interrupt(); } } class TimerThread extends Thread { boolean isRunning = false; public TimerThread() { } @Override public void run() { int seconds = 0; isRunning = true; while (isRunning) { try { Log.d(TAG, "Timer is running for : " + seconds); seconds++; Thread.sleep(1000); } catch (InterruptedException e) { isRunning = false; } } } public boolean isRunning() { return isRunning; } } } </code></pre> <p>Like I said, these are the relevant code fragments. The problem is, if I run this, the Activity stays black - I just get the header with the name of the app, thats all. With the logging I can confirm that the thread is running, but nothing else is displayed.</p> <p>Can you please help me out, I am rather new to android.<br> Thank you very much - already in advance. </p>
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    1. USDaniel
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    1. COhy! i don't see a code where you change the gui? i you want to update the gui in the thread you have to use `runOnUIThread()`
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    2. COThats true - The GUI was working perfectly before I tried adding the new feature displaying the timer - therefor I figured I could remove all the findView() and setText() Methods. I just wanted to display the core of the problem - so you guys dont have to read all the unnecessary codelines.
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