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    <ol> <li><p>Change <code>connection = new Thread(new ServerThread());</code> to: <code>connection = new ServerThread();</code></p></li> <li><p>Maybe add synchronized blocks when setting/getting handler instance (it is in different threads after all :))</p></li> <li><p>Loop actually does the magic ;)</p></li> <li><p>In onDestroy quit Looper for serverThread</p></li> <li><p>And last but not least (although it does not concern Handler/Looper subject is probably the reason why you never see in logs what you expect): instead of <code>boolean onTouchEvent(MotionEvent event)</code> use <code>boolean dispatchTouchEvent(MotionEvent ev)</code> as onTouchEvent due to docs is <code>Called when a touch screen event was not handled by any of the views under it.</code> so probably this handler method is never called</p></li> </ol> <p>EDIT: Are you sure it executes sendMessage? And by the way why do you use <code>Log.v</code>? it assumes you have logging level set to verbose otherwise the logs will be abandoned. I suggest to use rather <code>Log.i</code>.</p> <p>Maybe try this code:</p> <pre><code>ServerThread connection; Handler coordHandler; public void onCreate(Bundle savedInstanceState) { connection = new ServerThread(); connection.start(); } @Override protected void onDestroy() { synchronized (this) { if(coordHandler != null) { coordHandler.getLooper().quit(); } } super.onDestroy(); } public boolean dispatchTouchEvent(MotionEvent event) { synchronized (this) { if(coordHandler == null) { Log.i(INNER_TAG, "Handler is null"); } else { Log.i(INNER_TAG, "Handler exists"); coordHandler.sendMessage( coordHandler.obtainMessage( 0, event.toString())); } } return false; } synchronized void setCoordHandler(Handler handler) { coordHandler = handler; } public class ServerThread extends Thread { public void run() { this.setName("serverThread"); Looper.prepare(); setCoordHandler(new Handler() { @Override public void handleMessage(Message msg) { Log.i(INNER_TAG, "Inside handler"); } }); Looper.loop(); } } </code></pre>
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    1. POHow can I keep a connection thread alive? (Do I need to use a daemon?)
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    1. USTomasz Gawel
    1. USTomasz Gawel
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    1. COThanks for the response. I'll try the other suggestions, but I can rule out #5. As I said above, I can be certain that the touch event is called.
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      1. USTom Wright
 

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