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POAsyncTask crashes sometimes
 

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  1. POAsyncTask crashes sometimes
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    <p>One of my main AsyncTasks seems to be crashing occasionally (the progress bar freezes and the process stops) and I wondered if I was doing something wrong in my code.</p> <p>It looks like it may happen when my Galaxy S2 starts to run low on battery - it seems to coincide with some errors regarding the brightness controls. Although whether these are the cause of the error or result from the error is something I haven't been able to determine. Also, since the battery always seems to be running low this may not even be related!</p> <p>Is there anything that I'm doing in this AsyncTask that is wrong? I'm actually only using the AsyncTask to display one of three progress bars (the computer players) before executing the actual computer's turn with a handler.</p> <p>Also this has never been reported on the Android market. If it is caused by the InterruptedException should I also print the stack trace so that I get the user error when it occurs for my end users?</p> <pre><code>//Declaration at top level of activity private ComputerPlayerTask mComputerPlayerTask = new ComputerPlayerTask(); // Execution of the task with a random integer value mComputerPlayerTask = new ComputerPlayerTask(); mComputerPlayerTask.execute(randomInt); private class ComputerPlayerTask extends AsyncTask&lt;Integer, Integer, Boolean&gt; { private ProgressBar mProgressBar; @Override protected Boolean doInBackground(Integer... params) { int delayTime = params[0]; mProgressBar.setMax(delayTime - 1); for (int i = 0; i &lt; delayTime; i++) { try { Thread.sleep(500); } catch (InterruptedException e) { Log.e(DEBUG_TAG, "Can't sleep thread"); } if (mPause) { i--; } else { publishProgress(1); } } return true; } @Override protected void onPostExecute(Boolean result) { mProgressBar.setVisibility(View.INVISIBLE); mMainHandler.sendEmptyMessage(WHAT_COMPUTER_TURN); super.onPostExecute(result); } @Override protected void onPreExecute() { mProgressBar = (ProgressBar) findViewById(playerProgressBarMap .get(Player.getCurrentPlayer())); mProgressBar.setProgress(0); if (!mSpeedUp) { mProgressBar.setVisibility(View.VISIBLE); } } @Override protected void onCancelled() { Log.i(DEBUG_TAG, "onCancelled"); mProgressBar.setVisibility(View.INVISIBLE); } @Override protected void onProgressUpdate(Integer... values) { mProgressBar.incrementProgressBy(values[0]); } } </code></pre> <p>I've finally got a report from the market about this issue. You can see that the AsyncTasks are all waiting for something. Could this be caused by setting the duration of the progress bar as Daniel and Vito have stated or is there something else wrong?</p> <pre><code>DALVIK THREADS: (mutexes: tll=0 tsl=0 tscl=0 ghl=0 hwl=0 hwll=0) "main" prio=5 tid=1 NATIVE | group="main" sCount=1 dsCount=0 obj=0x400281b8 self=0xcec0 | sysTid=19207 nice=0 sched=0/0 cgrp=default handle=-1345006496 | schedstat=( 108745487102 22285195732 39534 ) at android.media.SoundPool.play(Native Method) at com.bazsoft.yaniv.SoundManager.playSound(SoundManager.java:83) at com.bazsoft.yaniv.YanivGameActivity.displayPileCards(YanivGameActivity.java:551) at com.bazsoft.yaniv.YanivGameActivity.displayCards(YanivGameActivity.java:506) at com.bazsoft.yaniv.YanivGameActivity.access$6(YanivGameActivity.java:500) at com.bazsoft.yaniv.YanivGameActivity$ComputerHandler.handleMessage(YanivGameActivity.java:111) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:123) at android.app.ActivityThread.main(ActivityThread.java:3691) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:507) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:847) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605) at dalvik.system.NativeStart.main(Native Method) "AsyncTask #5" prio=5 tid=14 WAIT | group="main" sCount=1 dsCount=0 obj=0x40573f38 self=0x27bca0 | sysTid=19282 nice=10 sched=0/0 cgrp=bg_non_interactive handle=2118216 | schedstat=( 101862790 1754080269 477 ) at java.lang.Object.wait(Native Method) - waiting on &lt;0x4052b1a8&gt; (a java.lang.VMThread) at java.lang.Thread.parkFor(Thread.java:1424) at java.lang.LangAccessImpl.parkFor(LangAccessImpl.java:48) at sun.misc.Unsafe.park(Unsafe.java:337) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:157) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2016) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:411) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1021) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1081) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581) at java.lang.Thread.run(Thread.java:1019) "AsyncTask #4" prio=5 tid=13 WAIT | group="main" sCount=1 dsCount=0 obj=0x40584508 self=0x27b8c0 | sysTid=19278 nice=10 sched=0/0 cgrp=bg_non_interactive handle=2712376 | schedstat=( 45122127 1293929987 198 ) at java.lang.Object.wait(Native Method) - waiting on &lt;0x40584668&gt; (a java.lang.VMThread) at java.lang.Thread.parkFor(Thread.java:1424) at java.lang.LangAccessImpl.parkFor(LangAccessImpl.java:48) at sun.misc.Unsafe.park(Unsafe.java:337) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:157) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2016) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:411) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1021) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1081) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581) at java.lang.Thread.run(Thread.java:1019) "AsyncTask #3" prio=5 tid=12 WAIT | group="main" sCount=1 dsCount=0 obj=0x4056ffb8 self=0x27b378 | sysTid=19271 nice=10 sched=0/0 cgrp=bg_non_interactive handle=1318248 | schedstat=( 50782335 1392327423 217 ) at java.lang.Object.wait(Native Method) - waiting on &lt;0x405700e8&gt; (a java.lang.VMThread) at java.lang.Thread.parkFor(Thread.java:1424) at java.lang.LangAccessImpl.parkFor(LangAccessImpl.java:48) at sun.misc.Unsafe.park(Unsafe.java:337) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:157) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2016) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:411) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1021) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1081) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581) at java.lang.Thread.run(Thread.java:1019) "AsyncTask #2" prio=5 tid=11 WAIT | group="main" sCount=1 dsCount=0 obj=0x4057aa50 self=0x2b08b8 | sysTid=19266 nice=10 sched=0/0 cgrp=bg_non_interactive handle=2107320 | schedstat=( 47150870 1245297244 204 ) at java.lang.Object.wait(Native Method) - waiting on &lt;0x4057ab80&gt; (a java.lang.VMThread) at java.lang.Thread.parkFor(Thread.java:1424) at java.lang.LangAccessImpl.parkFor(LangAccessImpl.java:48) at sun.misc.Unsafe.park(Unsafe.java:337) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:157) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2016) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:411) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1021) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1081) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581) at java.lang.Thread.run(Thread.java:1019) "AsyncTask #1" prio=5 tid=10 WAIT | group="main" sCount=1 dsCount=0 obj=0x4057e3e0 self=0x225e60 | sysTid=19260 nice=10 sched=0/0 cgrp=bg_non_interactive handle=2252696 | schedstat=( 47511668 1323908745 205 ) at java.lang.Object.wait(Native Method) - waiting on &lt;0x4057e5b8&gt; (a java.lang.VMThread) at java.lang.Thread.parkFor(Thread.java:1424) at java.lang.LangAccessImpl.parkFor(LangAccessImpl.java:48) at sun.misc.Unsafe.park(Unsafe.java:337) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:157) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2016) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:411) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1021) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1081) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581) at java.lang.Thread.run(Thread.java:1019) "SoundPoolThread" prio=5 tid=9 NATIVE | group="main" sCount=1 dsCount=0 obj=0x40513680 self=0x188e38 | sysTid=19234 nice=0 sched=0/0 cgrp=default handle=1798920 | schedstat=( 4164749 2002043 34 ) at dalvik.system.NativeStart.run(Native Method) "SoundPool" prio=5 tid=8 NATIVE | group="main" sCount=1 dsCount=0 obj=0x40518668 self=0x188d00 | sysTid=19233 nice=0 sched=0/0 cgrp=default handle=1799064 | schedstat=( 154125 0 1 ) at dalvik.system.NativeStart.run(Native Method) "Binder Thread #2" prio=5 tid=7 NATIVE | group="main" sCount=1 dsCount=0 obj=0x4051e608 self=0x8ad90 | sysTid=19213 nice=0 sched=0/0 cgrp=default handle=1104984 | schedstat=( 7442210 75731553 65 ) at dalvik.system.NativeStart.run(Native Method) "Binder Thread #1" prio=5 tid=6 NATIVE | group="main" sCount=1 dsCount=0 obj=0x4051ca20 self=0x10cf90 | sysTid=19212 nice=0 sched=0/0 cgrp=default handle=1098888 | schedstat=( 8834252 62834840 68 ) at dalvik.system.NativeStart.run(Native Method) "Compiler" daemon prio=5 tid=5 VMWAIT | group="system" sCount=1 dsCount=0 obj=0x405189a0 self=0x10c978 | sysTid=19211 nice=0 sched=0/0 cgrp=default handle=1105168 | schedstat=( 826648662 443778935 3811 ) at dalvik.system.NativeStart.run(Native Method) "Signal Catcher" daemon prio=5 tid=4 RUNNABLE | group="system" sCount=0 dsCount=0 obj=0x405188e0 self=0x10c810 | sysTid=19210 nice=0 sched=0/0 cgrp=default handle=1093320 | schedstat=( 2793168 631667 8 ) at dalvik.system.NativeStart.run(Native Method) "GC" daemon prio=5 tid=3 VMWAIT | group="system" sCount=1 dsCount=0 obj=0x40518838 self=0x10c6a0 | sysTid=19209 nice=0 sched=0/0 cgrp=default handle=1097888 | schedstat=( 40991755 61721634 20 ) at dalvik.system.NativeStart.run(Native Method) "HeapWorker" daemon prio=5 tid=2 VMWAIT | group="system" sCount=1 dsCount=0 obj=0x40518780 self=0x10c538 | sysTid=19208 nice=0 sched=0/0 cgrp=default handle=1098528 | schedstat=( 624790039 112243012 376 ) at dalvik.system.NativeStart.run(Native Method) </code></pre>
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    1. USBarry Irvine
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

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