需要对此经常性问题ANR keyDispatchingTimedOut有所了解
我有一个应用程序可以让ANR保持在一个特定的组件中，而我无法弄清楚CPU时间的问题。 最近我得到了两种ANR，一种土着和一种等待。
DALVIK THREADS:
"main" prio=5 tid=1 NATIVE
| group="main" sCount=1 dsCount=0 s=N obj=0x4001d8c0 self=0xccc8
| sysTid=10569 nice=0 sched=0/0 cgrp=default handle=-1345017816
| schedstat=( 9041503981 6690216078 17225 )
at android.view.Surface.lockCanvasNative(Native Method)
at android.view.Surface.lockCanvas(Surface.java:314)
at android.view.SurfaceView$3.internalLockCanvas(SurfaceView.java:773)
at android.view.SurfaceView$3.lockCanvas(SurfaceView.java:756)
at com.dane.hud.Surfaceview$DrawThread.run(Surfaceview.java:776)
at com.dane.hud.Surfaceview.onTouchEvent(Surfaceview.java:322)
at android.view.View.dispatchTouchEvent(View.java:3766)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1671)
at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1107)
at android.app.Activity.dispatchTouchEvent(Activity.java:2086)
at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1655)
at android.view.ViewRoot.handleMessage(ViewRoot.java:1785)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4627)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
at dalvik.system.NativeStart.main(Native Method)
"Binder Thread #3" prio=5 tid=9 NATIVE
| group="main" sCount=1 dsCount=0 s=N obj=0x44821de0 self=0x2b9b78
| sysTid=10585 nice=0 sched=0/0 cgrp=default handle=2857768
| schedstat=( 726806597 708740243 2395 )
at dalvik.system.NativeStart.run(Native Method)
"Binder Thread #2" prio=5 tid=6 NATIVE
| group="main" sCount=1 dsCount=0 s=N obj=0x4476c5e8 self=0x13cbf8
| sysTid=10574 nice=0 sched=0/0 cgrp=default handle=1213280
| schedstat=( 767669649 687500005 2512 )
at dalvik.system.NativeStart.run(Native Method)
"Binder Thread #1" prio=5 tid=5 NATIVE
| group="main" sCount=1 dsCount=0 s=N obj=0x4476b310 self=0x126f90
| sysTid=10573 nice=0 sched=0/0 cgrp=default handle=1208144
| schedstat=( 749938913 622802748 2497 )
at dalvik.system.NativeStart.run(Native Method)
"Compiler" daemon prio=5 tid=4 VMWAIT
| group="system" sCount=1 dsCount=0 s=N obj=0x447652a0 self=0x125b80
| sysTid=10572 nice=0 sched=0/0 cgrp=default handle=1251720
| schedstat=( 999145549 669586193 5169 )
at dalvik.system.NativeStart.run(Native Method)
"Signal Catcher" daemon prio=5 tid=3 RUNNABLE
| group="system" sCount=0 dsCount=0 s=N obj=0x447651e8 self=0x121988
| sysTid=10571 nice=0 sched=0/0 cgrp=default handle=1251656
| schedstat=( 16204836 16693113 8 )
at dalvik.system.NativeStart.run(Native Method)
"HeapWorker" daemon prio=5 tid=2 VMWAIT
| group="system" sCount=1 dsCount=0 s=N obj=0x431a9650 self=0x1317c0
| sysTid=10570 nice=0 sched=0/0 cgrp=default handle=1172520
| schedstat=( 28203003083 34572570617 10984 )
at dalvik.system.NativeStart.run(Native Method)
和
DALVIK THREADS:
"main" prio=5 tid=1 WAIT
| group="main" sCount=1 dsCount=0 s=N obj=0x4001d8c0 self=0xccc8
| sysTid=2428 nice=0 sched=0/0 cgrp=default handle=-1345017816
| schedstat=( 5054412632 4232574644 11781 )
at java.lang.Object.wait(Native Method)
- waiting on <0x4001d950> (a java.lang.VMThread)
at java.lang.Thread.parkFor(Thread.java:1535)
at java.lang.LangAccessImpl.parkFor(LangAccessImpl.java:48)
at sun.misc.Unsafe.park(Unsafe.java:317)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:131)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:790)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:823)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1153)
at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:185)
at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:261)
at android.view.SurfaceView$3.internalLockCanvas(SurfaceView.java:764)
at android.view.SurfaceView$3.lockCanvas(SurfaceView.java:756)
at com.dane.hud.Surfaceview$DrawThread.run(Surfaceview.java:776)
at com.dane.hud.Surfaceview.onTouchEvent(Surfaceview.java:319)
at android.view.View.dispatchTouchEvent(View.java:3766)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1671)
at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1107)
at android.app.Activity.dispatchTouchEvent(Activity.java:2086)
at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1655)
at android.view.ViewRoot.handleMessage(ViewRoot.java:1785)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4627)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
at dalvik.system.NativeStart.main(Native Method)
"Thread-448" prio=5 tid=16 WAIT
| group="main" sCount=1 dsCount=0 s=N obj=0x447e4b40 self=0x2e5960
| sysTid=2892 nice=0 sched=0/0 cgrp=default handle=3037856
| schedstat=( 495635974 519531260 463 )
at java.lang.Object.wait(Native Method)
- waiting on <0x447eeb10> (a java.lang.VMThread)
at java.lang.Thread.parkFor(Thread.java:1535)
at java.lang.LangAccessImpl.parkFor(LangAccessImpl.java:48)
at sun.misc.Unsafe.park(Unsafe.java:317)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:131)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:790)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:823)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1153)
at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:185)
at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:261)
at android.view.SurfaceView$3.internalLockCanvas(SurfaceView.java:764)
at android.view.SurfaceView$3.lockCanvas(SurfaceView.java:756)
at com.dane.hud.Surfaceview$DrawThread.run(Surfaceview.java:776)
at com.dane.hud.HUD.updateWithNewLocation(HUD.java:639)
at com.dane.hud.HUD.access$3(HUD.java:618)
at com.dane.hud.HUD$updateEverythingFromGPS.run(HUD.java:573)
"Thread-447" prio=5 tid=15 WAIT
| group="main" sCount=1 dsCount=0 s=N obj=0x447fb5f0 self=0x2bd690
| sysTid=2890 nice=0 sched=0/0 cgrp=default handle=2873296
| schedstat=( 636688219 727813733 545 )
at java.lang.Object.wait(Native Method)
- waiting on <0x447fb780> (a java.lang.VMThread)
at java.lang.Thread.parkFor(Thread.java:1535)
at java.lang.LangAccessImpl.parkFor(LangAccessImpl.java:48)
at sun.misc.Unsafe.park(Unsafe.java:317)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:131)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:790)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:823)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1153)
at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:185)
at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:261)
at android.view.SurfaceView$3.internalLockCanvas(SurfaceView.java:764)
at android.view.SurfaceView$3.lockCanvas(SurfaceView.java:756)
at com.dane.hud.Surfaceview$DrawThread.run(Surfaceview.java:776)
at com.dane.hud.HUD.updateWithNewLocation(HUD.java:639)
at com.dane.hud.HUD.access$3(HUD.java:618)
at com.dane.hud.HUD$updateEverythingFromGPS.run(HUD.java:573)
"Thread-446" prio=5 tid=14 WAIT
| group="main" sCount=1 dsCount=0 s=N obj=0x44823a68 self=0x2ccac0
| sysTid=2889 nice=0 sched=0/0 cgrp=default handle=2874496
| schedstat=( 774780280 777496325 693 )
at java.lang.Object.wait(Native Method)
- waiting on <0x44786fe8> (a java.lang.VMThread)
at java.lang.Thread.parkFor(Thread.java:1535)
at java.lang.LangAccessImpl.parkFor(LangAccessImpl.java:48)
at sun.misc.Unsafe.park(Unsafe.java:317)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:131)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:790)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:823)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1153)
at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:185)
at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:261)
at android.view.SurfaceView$3.internalLockCanvas(SurfaceView.java:764)
at android.view.SurfaceView$3.lockCanvas(SurfaceView.java:756)
at com.dane.hud.Surfaceview$DrawThread.run(Surfaceview.java:776)
at com.dane.hud.HUD.updateWithNewLocation(HUD.java:639)
at com.dane.hud.HUD.access$3(HUD.java:618)
at com.dane.hud.HUD$updateEverythingFromGPS.run(HUD.java:573)
"Thread-445" prio=5 tid=13 WAIT
| group="main" sCount=1 dsCount=0 s=N obj=0x447f2288 self=0x2e2a80
| sysTid=2888 nice=0 sched=0/0 cgrp=default handle=3026032
| schedstat=( 831634516 815490735 696 )
at java.lang.Object.wait(Native Method)
- waiting on <0x447f2418> (a java.lang.VMThread)
at java.lang.Thread.parkFor(Thread.java:1535)
at java.lang.LangAccessImpl.parkFor(LangAccessImpl.java:48)
at sun.misc.Unsafe.park(Unsafe.java:317)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:131)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:790)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:823)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1153)
at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:185)
at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:261)
at android.view.SurfaceView$3.internalLockCanvas(SurfaceView.java:764)
at android.view.SurfaceView$3.lockCanvas(SurfaceView.java:756)
at com.dane.hud.Surfaceview$DrawThread.run(Surfaceview.java:776)
at com.dane.hud.HUD.updateWithNewLocation(HUD.java:639)
at com.dane.hud.HUD.access$3(HUD.java:618)
at com.dane.hud.HUD$updateEverythingFromGPS.run(HUD.java:573)
"Thread-444" prio=5 tid=12 WAIT
| group="main" sCount=1 dsCount=0 s=N obj=0x447c97c0 self=0x2c4910
| sysTid=2887 nice=0 sched=0/0 cgrp=default handle=2780792
| schedstat=( 1249114988 1195007328 1038 )
at java.lang.Object.wait(Native Method)
- waiting on <0x447cd918> (a java.lang.VMThread)
at java.lang.Thread.parkFor(Thread.java:1535)
at java.lang.LangAccessImpl.parkFor(LangAccessImpl.java:48)
at sun.misc.Unsafe.park(Unsafe.java:317)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:131)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:790)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:823)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1153)
at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:185)
at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:261)
at android.view.SurfaceView$3.internalLockCanvas(SurfaceView.java:764)
at android.view.SurfaceView$3.lockCanvas(SurfaceView.java:756)
at com.dane.hud.Surfaceview$DrawThread.run(Surfaceview.java:776)
at com.dane.hud.HUD.updateWithNewLocation(HUD.java:639)
at com.dane.hud.HUD.access$3(HUD.java:618)
at com.dane.hud.HUD$updateEverythingFromGPS.run(HUD.java:573)
"Thread-443" prio=5 tid=11 VMWAIT JIT
| group="main" sCount=1 dsCount=0 s=Y obj=0x4480cd28 self=0x2d27b0
| sysTid=2886 nice=0 sched=0/0 cgrp=default handle=2959600
| schedstat=( 1636657703 1482391360 1374 )
at java.util.concurrent.locks.AbstractQueuedSynchronizer.addWaiter(AbstractQueuedSynchronizer.java:~562)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1153)
at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:185)
at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:261)
at android.view.Surfa...
有任何想法吗？ 我已经将操作移至新线程，也许我没有调用join（）; 在他们。
谢谢你的帮助。
在这里：
http://developer.android.com/guide/practices/design/responsiveness.html
ANR是当主线程阻塞某个东西时，总是建议在子线程中执行长操作：
去引用：
因此，在主线程中运行的任何方法都应该尽可能少地工作。 特别是，活动应尽可能少地设置关键的生命周期方法，如onCreate（）和onResume（）。 可能长时间运行的操作（如网络或数据库操作）或计算量大的计算（如调整位图大小）应在子线程中完成（或者在数据库操作的情况下，通过异步请求）。 但是，这并不意味着您的主线程应该在等待子线程完成时阻塞 - 也不应该调用Thread.wait（）或Thread.sleep（）。 在等待子线程完成时，您的主线程应该为子线程提供一个处理程序，以便在完成后发回。 以这种方式设计您的应用程序将允许您的主线程保持对输入的响应，从而避免5秒输入事件超时导致的ANR对话。 显示UI的任何其他线程都应遵循这些相同的做法，因为它们也受到相同的超时限制。
我明白这并不容易，但是上面的建议是UI不应该在主线程中完成。
另一方面，您的主线程处于“WAIT”状态，这意味着使用非异步操作。 也许你想尝试异步选项 - 这应该导致TIMED_WAIT状态，如下所示：
Android - 如何调查ANR？
（主线程确定）。
但像这里讨论的那样：
http://groups.google.com/group/android-ndk/browse_thread/thread/84d6a9be21f4e579/b83537161b96da82?q=%22Bitmap+creation+and+composition+in+native+code%22#b83537161b96da82
我怀疑你的问题是因为位图绘制在lockCanvas（）和unlockCanvas（）之间花费太长时间 - 也许你可能想将位图更新分解为更小的片段？ 在同样的讨论中，还提到了使用JNI / NDK进行位图计算 - 如果计算时间过长，则不应在基于Java的位图更新方法内完成位图计算。
推荐阅读：
http://obviam.net/index.php/the-android-game-loop/
谢谢。
根据日志，我能想到的唯一原因可能会触发ANR：
据我所知，通常在Java中，每个线程都与2个组件相关联。 一个是程序计数器，另一个是垃圾收集器。 所以每个线程都会有一个gc监视器。
在java.lang.Object.wait（Native Method） - 等待<0x4001d950>（一个java.lang.VMThread）
VMThreads理想地用于几乎平行地处理监控gc的这一方面。 所以我想你的场景是SurfaceViewis试图获得一个锁，但无法执行，因为VMThread持有锁，尚未发布（可能是由于某些主要的GC操作），因此等待vmthread释放锁。
您可能需要检查您的主日志转储，其中包含gc活动记录，这可能会让您更好地了解为什么gc占用此线程CPU时间，然后应用程序分析可能会有所帮助。 Jus检查。
链接地址: http://www.djcxy.com/p/61973.html上一篇: Need some insight on this recurring issue, ANR keyDispatchingTimedOut