你怎麼解讀Android的ANR報告

Question

我GOOGLE了，直到我的手指痠痛，但我無法弄清楚如何解釋由谷歌發送給開發商的ANR報告。

因此，在報告的頂部，這個意圖被列爲原因：

ANR Executing service blah.blah.removed.UpdateEpisodesFileDetails 

隨着下面列出的線程。 （注意，我們有好幾個，這些ANR次數，並且在任何情況下File.deleteImpl被列爲什麼爲主線，這似乎是一個線索上運行，但上市的意圖並不做刪除）：

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=0x40022268 self=0xcea0 
    | sysTid=313 nice=0 sched=0/0 cgrp=[fopen-error:2] handle=-1345006432 
    | schedstat=(6115674000 2882269000 4010) 
    at java.io.File.deleteImpl(Native Method) 
    at java.io.File.delete(File.java:375) 
    at au.com.shiftyjelly.pocketcasts.a.i.a(SourceFile:256) 
    at au.com.shiftyjelly.pocketcasts.a.i.a(SourceFile:177) 
    at au.com.shiftyjelly.pocketcasts.a.i.c(SourceFile:374) 
    at au.com.shiftyjelly.pocketcasts.a.i.a(SourceFile:290) 
    at au.com.shiftyjelly.pocketcasts.a.e.a(SourceFile:1) 
    at au.com.shiftyjelly.pocketcasts.server.t.a(SourceFile:393) 
    at au.com.shiftyjelly.pocketcasts.server.x.onPostExecute(SourceFile:1) 
    at android.os.AsyncTask.finish(AsyncTask.java:417) 
    at android.os.AsyncTask.access$300(AsyncTask.java:127) 
    at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:429) 
    at android.os.Handler.dispatchMessage(Handler.java:99) 
    at android.os.Looper.loop(Looper.java:130) 
    at android.app.ActivityThread.main(ActivityThread.java:3806) 
    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:839) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 
    at dalvik.system.NativeStart.main(Native Method) 

"AsyncTask #1" prio=5 tid=13 WAIT 
    | group="main" sCount=1 dsCount=0 obj=0x4078adc0 self=0x415c80 
    | sysTid=2601 nice=10 sched=0/0 cgrp=[fopen-error:2] handle=4283832 
    | schedstat=(270113000 194565000 1121) 
    at java.lang.Object.wait(Native Method) 
    - waiting on <0x4078b000> (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) 

"Binder Thread #3" prio=5 tid=10 NATIVE 
    | group="main" sCount=1 dsCount=0 obj=0x405be0c0 self=0x3ba1e8 
    | sysTid=700 nice=0 sched=0/0 cgrp=[fopen-error:2] handle=3991064 
    | schedstat=(8717000 2885597000 235) 
    at dalvik.system.NativeStart.run(Native Method) 

"Thread-16" prio=5 tid=11 NATIVE 
    | group="main" sCount=1 dsCount=0 obj=0x40623f98 self=0x3a3600 
    | sysTid=332 nice=0 sched=0/0 cgrp=[fopen-error:2] handle=3815224 
    | schedstat=(24507000 2874905000 281) 
    at android.os.MessageQueue.nativePollOnce(Native Method) 
    at android.os.MessageQueue.next(MessageQueue.java:119) 
    at android.os.Looper.loop(Looper.java:117) 
    at au.com.shiftyjelly.pocketcasts.service.k.run(SourceFile:1078) 
    at java.lang.Thread.run(Thread.java:1019) 

"background thread" prio=5 tid=9 NATIVE 
    | group="main" sCount=1 dsCount=0 obj=0x40617c90 self=0x34eb00 
    | sysTid=330 nice=0 sched=0/0 cgrp=[fopen-error:2] handle=3468344 
    | schedstat=(8289000 2632928000 198) 
    at android.os.MessageQueue.nativePollOnce(Native Method) 
    at android.os.MessageQueue.next(MessageQueue.java:119) 
    at android.os.Looper.loop(Looper.java:117) 
    at android.os.HandlerThread.run(HandlerThread.java:60) 

"pool-1-thread-1" prio=5 tid=8 WAIT 
    | group="main" sCount=1 dsCount=0 obj=0x405446b8 self=0x34ace0 
    | sysTid=329 nice=0 sched=0/0 cgrp=[fopen-error:2] handle=3451952 
    | schedstat=(39981000 2194522000 271) 
    at java.lang.Object.wait(Native Method) 
    - waiting on <0x405447d8> (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) 

"Binder Thread #2" prio=5 tid=7 NATIVE 
    | group="main" sCount=1 dsCount=0 obj=0x40514c80 self=0x1373b8 
    | sysTid=319 nice=0 sched=0/0 cgrp=[fopen-error:2] handle=2641200 
    | schedstat=(13291000 2392775000 260) 
    at dalvik.system.NativeStart.run(Native Method) 

"Binder Thread #1" prio=5 tid=6 NATIVE 
    | group="main" sCount=1 dsCount=0 obj=0x40514b70 self=0x2849c0 
    | sysTid=318 nice=0 sched=0/0 cgrp=[fopen-error:2] handle=603856 
    | schedstat=(12253000 2190249000 264) 
    at dalvik.system.NativeStart.run(Native Method) 

"Compiler" daemon prio=5 tid=5 VMWAIT 
    | group="system" sCount=1 dsCount=0 obj=0x40510d28 self=0x29f0a0 
    | sysTid=317 nice=0 sched=0/0 cgrp=[fopen-error:2] handle=602784 
    | schedstat=(433121000 2151691000 3736) 
    at dalvik.system.NativeStart.run(Native Method) 

"Signal Catcher" daemon prio=5 tid=4 RUNNABLE 
    | group="system" sCount=0 dsCount=0 obj=0x40510c68 self=0x29ef68 
    | sysTid=316 nice=0 sched=0/0 cgrp=[fopen-error:2] handle=602720 
    | schedstat=(8292000 1519782000 208) 
    at dalvik.system.NativeStart.run(Native Method) 

"GC" daemon prio=5 tid=3 VMWAIT 
    | group="system" sCount=1 dsCount=0 obj=0x40510bc0 self=0x930a0 
    | sysTid=315 nice=0 sched=0/0 cgrp=[fopen-error:2] handle=602208 
    | schedstat=(37690000 1428592000 208) 
    at dalvik.system.NativeStart.run(Native Method) 

"HeapWorker" daemon prio=5 tid=2 VMWAIT 
    | group="system" sCount=1 dsCount=0 obj=0x40510b08 self=0x93510 
    | sysTid=314 nice=0 sched=0/0 cgrp=[fopen-error:2] handle=602008 
    | schedstat=(74593000 1863624000 297) 
    at dalvik.system.NativeStart.run(Native Method) 

Answer 1

好了，不要我覺得自己是個混帳這是原因：

at au.com.shiftyjelly.pocketcasts.server.x.onPostExecute(SourceFile:1) 
    at android.os.AsyncTask.finish(AsyncTask.java:417) 

所以一切都是異步的，但是一個異步onPostExecute被調用，它運行在主線程，該代碼然後走了，稱爲一大堆其他代碼，也在主線程中。這並不明顯，因爲所有的代碼都是用異步回調等編碼的，所以它們看起來都是異步的。

Answer 2

ANR（應用程序無響應）意味着你鎖定在UI線程太久。通常這意味着你正在UI線程上進行網絡調用或類似的東西。