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POCannot solve android.view.ViewRoot$CalledFromWrongThreadException. Help needed?
 

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  1. POCannot solve android.view.ViewRoot$CalledFromWrongThreadException. Help needed?
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    <p>after searching i've found that some phones (like the Galaxy s) are affected by a strange bug or whatever that cause this error:</p> <pre><code> java.lang.RuntimeException: An error occured while executing doInBackground() at android.os.AsyncTask$3.done(AsyncTask.java:200) at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:274) at java.util.concurrent.FutureTask.setException(FutureTask.java:125) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:308) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581) at java.lang.Thread.run(Thread.java:1019) Caused by: android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views. at android.view.ViewRoot.checkThread(ViewRoot.java:2934) at android.view.ViewRoot.invalidateChild(ViewRoot.java:643) at android.view.ViewRoot.invalidateChildInParent(ViewRoot.java:669) at android.view.ViewGroup.invalidateChild(ViewGroup.java:2511) at android.view.View.invalidate(View.java:5279) at android.webkit.WebView.selectionDone(WebView.java:4470) at android.webkit.WebView.clearHelpers(WebView.java:1295) at android.webkit.WebView.loadDataWithBaseURL(WebView.java:1714) at c.a(Unknown Source) at c.doInBackground(Unknown Source) at android.os.AsyncTask$2.call(AsyncTask.java:185) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:306) ... 4 more android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views. at android.view.ViewRoot.checkThread(ViewRoot.java:2934) at android.view.ViewRoot.invalidateChild(ViewRoot.java:643) at android.view.ViewRoot.invalidateChildInParent(ViewRoot.java:669) at android.view.ViewGroup.invalidateChild(ViewGroup.java:2511) at android.view.View.invalidate(View.java:5279) at android.webkit.WebView.selectionDone(WebView.java:4470) at android.webkit.WebView.clearHelpers(WebView.java:1295) at android.webkit.WebView.loadDataWithBaseURL(WebView.java:1714) at c.a(Unknown Source) at c.doInBackground(Unknown Source) at android.os.AsyncTask$2.call(AsyncTask.java:185) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:306) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581) at java.lang.Thread.run(Thread.java:1019) </code></pre> <p>And this is the logcat if needed and from here it seems that is problem of the swipe function:</p> <pre><code> 10-27 19:19:20.329 I/InputReader( 166): dispatchTouch::touch event's action is 1 10-27 19:19:20.329 I/InputDispatcher( 166): Delivering touch to current input target: action: 1, channel '4096f5c8 ***PACKEGE_NAME***/***PACKEGE_NAME***.Game (server)' 10-27 19:19:20.749 I/InputReader( 166): dispatchTouch::touch event's action is 0 10-27 19:19:20.749 I/InputDispatcher( 166): Delivering touch to current input target: action: 0, channel '4096f5c8 ***PACKEGE_NAME***/***PACKEGE_NAME***.Game (server)' 10-27 19:19:21.689 I/InputReader( 166): dispatchTouch::touch event's action is 1 10-27 19:19:21.689 I/InputDispatcher( 166): Delivering touch to current input target: action: 1, channel '4096f5c8 ***PACKEGE_NAME***/***PACKEGE_NAME***.Game (server)' 10-27 19:19:21.689 W/webview ( 1125): Miss a drag as we are waiting for WebCore's response for touch down. 10-27 19:19:21.989 I/InputReader( 166): dispatchTouch::touch event's action is 0 10-27 19:19:21.989 I/InputDispatcher( 166): Delivering touch to current input target: action: 0, channel '4096f5c8 ***PACKEGE_NAME***/***PACKEGE_NAME***.Game (server)' 10-27 19:19:22.159 I/Ads ( 1125): Refreshing ad. 10-27 19:19:22.169 I/webclipboard( 1125): clipservice: android.sec.clipboard.ClipboardExManager@4051cb08 10-27 19:19:22.259 I/Ads ( 1125): adRequestUrlHtml: &lt;html&gt;&lt;head&gt;&lt;script src="http://www.gstatic.com/afma/sdk-core-v40.js"&gt;&lt;/script&gt;&lt;script&gt;AFMA_buildAdURL({"preqs":15,"u_sd":1.0,"u_w":320,"slotname":"a14e098781b871d","msid":"***PACKEGE_NAME***","js":"afma-sdk-a-v4.0.4","isu":"F1B8EEEA64C5716BA996D22689C17557","format":"320x50_mb","net":"wi","app_name":"4.0.4.android.***PACKEGE_NAME***","hl":"pt","u_h":480,"u_so":"p","u_audio":1,"prl":792});&lt;/script&gt;&lt;/head&gt;&lt;body&gt;&lt;/body&gt;&lt;/html&gt; 10-27 19:19:22.449 I/InputReader( 166): dispatchTouch::touch event's action is 1 10-27 19:19:22.449 I/InputDispatcher( 166): Delivering touch to current input target: action: 1, channel '4096f5c8 ***PACKEGE_NAME***/***PACKEGE_NAME***.Game (server)' 10-27 19:19:22.449 W/webview ( 1125): Miss a drag as we are waiting for WebCore's response for touch down. 10-27 19:19:22.599 I/Ads ( 1125): Received ad url: &lt;"url": "http://googleads.g.doubleclick.net:80/mads/gma?preqs=15&amp;u_sd=1&amp;u_w=320&amp;slotname=a14e098781b871d&amp;msid=***PACKEGE_NAME***&amp;js=afma-sdk-a-v4.0.4&amp;isu=F1B8EEEA64C5716BA996D22689C17557&amp;format=320x50_mb&amp;net=wi&amp;app_name=4.0.4.android.***PACKEGE_NAME***&amp;hl=pt&amp;u_h=480&amp;u_so=p&amp;u_audio=1&amp;prl=792&amp;output=html&amp;region=mobile_app&amp;u_tz=240&amp;ex=1&amp;client_sdk=1&amp;askip=0", "afmaNotifyDt": "null"&gt; 10-27 19:19:22.609 I/InputReader( 166): dispatchTouch::touch event's action is 0 10-27 19:19:22.609 I/InputDispatcher( 166): Delivering touch to current input target: action: 0, channel '4096f5c8 ***PACKEGE_NAME***/***PACKEGE_NAME***.Game (server)' 10-27 19:19:23.339 W/dalvikvm( 1125): threadid=11: thread exiting with uncaught exception (group=0x40018578) 10-27 19:19:23.339 E/ACRA ( 1125): ACRA caught a RuntimeException exception for ***PACKEGE_NAME***. Building report. 10-27 19:19:23.339 D/ACRA ( 1125): Retrieve application default SharedPreferences. 10-27 19:19:23.349 V/webview ( 1125): ZoomScale 3 mPreserveZoom: false 10-27 19:19:23.489 I/ACRA ( 1125): READ_LOGS granted! ACRA can include LogCat and DropBox data. 10-27 19:19:23.519 D/ACRA ( 1125): Retrieving logcat output... </code></pre> <p>The only thing that can cause this error is a Timer that i use in my application in the game Intent, i tried to set up a handler but i saw a lot of crash in my ACRA log.</p> <p>This is the content of my intent, i hope that someone should help me :)</p> <pre><code> startB.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { startB.setEnabled(false); partiColTempo(tempox); } }); } private void displayText(final String text){ this.runOnUiThread(new Runnable(){ //@Override public void run() { tempo.setText(text); if (text.equals("Finished")){ eseguiSuono(); assegnaPunti(); startB.setEnabled(true); //elapsed=0; tempo.setText("Waiting"); } }}); } private void partiColTempo(int tempox) { TIMEOUT=tempox*1000; Log.w("tempo timer", ""+tempox); elapsed=INTERVAL; TimerTask task=new TimerTask(){ @Override public void run() { elapsed+=INTERVAL; if(elapsed&gt;TIMEOUT){ this.cancel(); displayText("Finished"); return; } //if(some other conditions) // this.cancel(); displayText(getString(R.string.tempo_rim)+" " + (TIMEOUT-elapsed) / 1000); } }; Timer timer = new Timer(); timer.scheduleAtFixedRate(task, INTERVAL, INTERVAL); </code></pre> <p>Is the problem there? Because i can't find other place when i call asynctask.</p>
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    1. COFrom your logcat post, it would appear that the issue is somewhere within an AsyncTask - Are you using one such and if so, could you please post the code for that too?
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    2. COFrom the logcat, it seems that you invalidate some view outside the main thread, and this is not allowed in Android.
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    3. COSo it's not a problem of the timer? I've to search an AsyncTask? The only "task" used in my app is that timer.
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