我正在将错误记录到设备外部存储上的文件中。我第一次写入文件时它没有问题。然而，我第二次得到和 ANR。这是代码：
PrintWriter writer;
try {
writer = new PrintWriter(
new FileWriter(LOG_FILE_DIR + LOG_FILE, true)
);
while(e != null){
e.printStackTrace(writer);
e = e.getCause();
}
writer.println();
writer.println("--------------------------------------------------");
writer.flush();
writer.close();
} catch (IOException ex) {
ex.printStackTrace();
}
这是 /data/anr/traces.txt 的输出：
----- pid 3859 at 2013-09-02 11:26:42 -----
DALVIK THREADS: (mutexes: tll=0 tsl=0 tscl=0 ghl=0)
"AsyncTask #2" prio=5 tid=19 WAIT
| group="main" sCount=1 dsCount=0 obj=0x416c6818 self=0x58260df0
| sysTid=3888 nice=10 sched=0/0 cgrp=apps/bg_non_interactive handle=1477254904
| state=S schedstat=( 5445000 16382000 49 ) utm=0 stm=0 core=3
at java.lang.Object.wait(Native Method)
- waiting on <0x416c6938> (a java.lang.VMThread) held by tid=19 (AsyncTask #2)
at java.lang.Thread.parkFor(Thread.java:1231)
at sun.misc.Unsafe.park(Unsafe.java:323)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:159)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2019)
at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:413)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1013)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1073)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
at java.lang.Thread.run(Thread.java:856)
"Thread-239" prio=5 tid=1 VMWAIT
| group="main" sCount=1 dsCount=0 obj=0x416c6990 self=0x56de3010
| sysTid=3859 nice=0 sched=0/0 cgrp=apps handle=1074619356
| state=S schedstat=( 2408747000 339367000 1739 ) utm=148 stm=92 core=3
#00 pc 00018104 /system/lib/libc.so (__futex_syscall3+8)
#01 pc 0000e41c /system/lib/libc.so (__pthread_cond_timedwait_relative+48)
#02 pc 0000e478 /system/lib/libc.so (__pthread_cond_timedwait+60)
#03 pc 0004a4e9 /system/lib/libdvm.so
#04 pc 0003a215 /system/lib/libdvm.so
#05 pc 00048429 /system/lib/libandroid_runtime.so (android::AndroidRuntime::start(char const*, char const*)+452)
#06 pc 00000db7 /system/bin/app_process
#07 pc 0001271f /system/lib/libc.so (__libc_init+38)
#08 pc 00000ae8 /system/bin/app_process
at dalvik.system.NativeStart.run(Native Method)
"pool-1-thread-1" prio=5 tid=18 TIMED_WAIT
| group="main" sCount=1 dsCount=0 obj=0x412854d8 self=0x57fa4f80
| sysTid=3887 nice=0 sched=0/0 cgrp=apps handle=1476019712
| state=S schedstat=( 5789000 5521000 10 ) utm=0 stm=0 core=3
at java.lang.Object.wait(Native Method)
- waiting on <0x412c9f10> (a java.lang.VMThread) held by tid=18 (pool-1-thread-1)
at java.lang.Thread.parkFor(Thread.java:1231)
at sun.misc.Unsafe.park(Unsafe.java:323)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:199)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:429)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:329)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:911)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1013)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1073)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
at java.lang.Thread.run(Thread.java:856)
"Binder_3" prio=5 tid=17 NATIVE
| group="main" sCount=1 dsCount=0 obj=0x41290dc0 self=0x58114bb0
| sysTid=3885 nice=0 sched=0/0 cgrp=apps handle=1477292960
| state=S schedstat=( 749000 177000 4 ) utm=0 stm=0 core=3
#00 pc 00016fe4 /system/lib/libc.so (__ioctl+8)
#01 pc 0002a9ad /system/lib/libc.so (ioctl+16)
#02 pc 00016ba1 /system/lib/libbinder.so (android::IPCThreadState::talkWithDriver(bool)+132)
#03 pc 00017363 /system/lib/libbinder.so (android::IPCThreadState::joinThreadPool(bool)+154)
#04 pc 0001b15d /system/lib/libbinder.so
#05 pc 00011267 /system/lib/libutils.so (android::Thread::_threadLoop(void*)+114)
#06 pc 00047657 /system/lib/libandroid_runtime.so (android::AndroidRuntime::javaThreadShell(void*)+66)
#07 pc 00010dcd /system/lib/libutils.so
#08 pc 0000e3d8 /system/lib/libc.so (__thread_entry+72)
#09 pc 0000dac4 /system/lib/libc.so (pthread_create+160)
at dalvik.system.NativeStart.run(Native Method)
"Thread-235" prio=5 tid=16 NATIVE
| group="main" sCount=1 dsCount=0 obj=0x412f0270 self=0x57fb1410
| sysTid=3882 nice=0 sched=0/0 cgrp=apps handle=1476072312
| state=S schedstat=( 4084000 504000 3 ) utm=0 stm=0 core=2
#00 pc 00018104 /system/lib/libc.so (__futex_syscall3+8)
#01 pc 0000e41c /system/lib/libc.so (__pthread_cond_timedwait_relative+48)
#02 pc 0000e478 /system/lib/libc.so (__pthread_cond_timedwait+60)
#03 pc 001041f5 /system/lib/libwebcore.so
#04 pc 0032f88f /system/lib/libwebcore.so
#05 pc 0032f8eb /system/lib/libwebcore.so
#06 pc 0024e9e9 /system/lib/libwebcore.so
#07 pc 001040b3 /system/lib/libwebcore.so
#08 pc 0000e3d8 /system/lib/libc.so (__thread_entry+72)
#09 pc 0000dac4 /system/lib/libc.so (pthread_create+160)
at dalvik.system.NativeStart.run(Native Method)
"Thread-234" prio=5 tid=15 NATIVE
| group="main" sCount=1 dsCount=0 obj=0x412df390 self=0x56e6adf0
| sysTid=3880 nice=0 sched=0/0 cgrp=apps handle=1457254064
| state=S schedstat=( 127952000 36864000 136 ) utm=11 stm=1 core=3
#00 pc 00017ee4 /system/lib/libc.so (epoll_wait+12)
#01 pc 0012b949 /system/lib/libchromium_net.so
#02 pc 0012b755 /system/lib/libchromium_net.so
#03 pc 000583ab /system/lib/libchromium_net.so
#04 pc 00056b13 /system/lib/libchromium_net.so (MessageLoop::RunInternal()+114)
#05 pc 00056b71 /system/lib/libchromium_net.so (MessageLoop::Run()+16)
#06 pc 000771d9 /system/lib/libchromium_net.so (base::Thread::ThreadMain()+188)
#07 pc 00076c93 /system/lib/libchromium_net.so
#08 pc 0000e3d8 /system/lib/libc.so (__thread_entry+72)
#09 pc 0000dac4 /system/lib/libc.so (pthread_create+160)
at dalvik.system.NativeStart.run(Native Method)
"Thread-232" prio=5 tid=12 TIMED_WAIT
| group="main" sCount=1 dsCount=0 obj=0x412c7038 self=0x586d1010
| sysTid=3878 nice=0 sched=0/0 cgrp=apps handle=1483543648
| state=S schedstat=( 144000 0 2 ) utm=0 stm=0 core=3
at java.lang.Object.wait(Native Method)
- waiting on <0x412c5c70> (a org.apache.cordova.CordovaWebView$3)
at java.lang.Object.wait(Object.java:401)
at org.apache.cordova.CordovaWebView$3.run(CordovaWebView.java:446)
at java.lang.Thread.run(Thread.java:856)
"AsyncTask #1" prio=5 tid=14 WAIT
| group="main" sCount=1 dsCount=0 obj=0x412abfc8 self=0x5a7979c8
| sysTid=3876 nice=10 sched=0/0 cgrp=apps/bg_non_interactive handle=1508051320
| state=S schedstat=( 3910000 23282000 28 ) utm=0 stm=0 core=1
at java.lang.Object.wait(Native Method)
- waiting on <0x412abcc8> (a java.lang.VMThread) held by tid=14 (AsyncTask #1)
at java.lang.Thread.parkFor(Thread.java:1231)
at sun.misc.Unsafe.park(Unsafe.java:323)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:159)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2019)
at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:413)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1013)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1073)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
at java.lang.Thread.run(Thread.java:856)
"CookieSyncManager" prio=5 tid=13 NATIVE
| group="main" sCount=1 dsCount=0 obj=0x412a4eb8 self=0x5870ca68
| sysTid=3874 nice=10 sched=0/0 cgrp=apps/bg_non_interactive handle=1506000736
| state=S schedstat=( 527000 135000 3 ) utm=0 stm=0 core=3
#00 pc 00017ee4 /system/lib/libc.so (epoll_wait+12)
#01 pc 00014b09 /system/lib/libutils.so (android::Looper::pollInner(int)+96)
#02 pc 00014d71 /system/lib/libutils.so (android::Looper::pollOnce(int, int*, int*, void**)+104)
#03 pc 0005fc1b /system/lib/libandroid_runtime.so (android::NativeMessageQueue::pollOnce(_JNIEnv*, int)+22)
#04 pc 0001e290 /system/lib/libdvm.so (dvmPlatformInvoke+112)
#05 pc 0004d489 /system/lib/libdvm.so (dvmCallJNIMethod(unsigned int const*, JValue*, Method const*, Thread*)+396)
#06 pc 000276a0 /system/lib/libdvm.so
#07 pc 0002b5f4 /system/lib/libdvm.so (dvmInterpret(Thread*, Method const*, JValue*)+184)
#08 pc 0005fdc9 /system/lib/libdvm.so (dvmCallMethodV(Thread*, Method const*, Object*, bool, JValue*, std::__va_list)+272)
#09 pc 0005fdf3 /system/lib/libdvm.so (dvmCallMethod(Thread*, Method const*, Object*, JValue*, ...)+20)
#10 pc 0005496f /system/lib/libdvm.so
#11 pc 0000e3d8 /system/lib/libc.so (__thread_entry+72)
#12 pc 0000dac4 /system/lib/libc.so (pthread_create+160)
at android.os.MessageQueue.nativePollOnce(Native Method)
at android.os.MessageQueue.next(MessageQueue.java:125)
at android.os.Looper.loop(Looper.java:124)
at android.webkit.WebSyncManager.run(WebSyncManager.java:90)
at android.webkit.CookieSyncManager.run(CookieSyncManager.java:58)
at java.lang.Thread.run(Thread.java:856)
"WebViewCoreThread" prio=5 tid=11 NATIVE
| group="main" sCount=1 dsCount=0 obj=0x41298db8 self=0x56e477c8
| sysTid=3872 nice=0 sched=0/0 cgrp=apps handle=1489447232
| state=S schedstat=( 668477000 227888000 696 ) utm=53 stm=13 core=0
#00 pc 00017ee4 /system/lib/libc.so (epoll_wait+12)
#01 pc 00014b09 /system/lib/libutils.so (android::Looper::pollInner(int)+96)
#02 pc 00014d71 /system/lib/libutils.so (android::Looper::pollOnce(int, int*, int*, void**)+104)
#03 pc 0005fc1b /system/lib/libandroid_runtime.so (android::NativeMessageQueue::pollOnce(_JNIEnv*, int)+22)
#04 pc 0001e290 /system/lib/libdvm.so (dvmPlatformInvoke+112)
#05 pc 0004d489 /system/lib/libdvm.so (dvmCallJNIMethod(unsigned int const*, JValue*, Method const*, Thread*)+396)
#06 pc 000276a0 /system/lib/libdvm.so
#07 pc 0002b5f4 /system/lib/libdvm.so (dvmInterpret(Thread*, Method const*, JValue*)+184)
#08 pc 0005fdc9 /system/lib/libdvm.so (dvmCallMethodV(Thread*, Method const*, Object*, bool, JValue*, std::__va_list)+272)
#09 pc 0005fdf3 /system/lib/libdvm.so (dvmCallMethod(Thread*, Method const*, Object*, JValue*, ...)+20)
#10 pc 0005496f /system/lib/libdvm.so
#11 pc 0000e3d8 /system/lib/libc.so (__thread_entry+72)
#12 pc 0000dac4 /system/lib/libc.so (pthread_create+160)
#13 pc 0000c77c <unknown>
at android.os.MessageQueue.nativePollOnce(Native Method)
at android.os.MessageQueue.next(MessageQueue.java:125)
at android.os.Looper.loop(Looper.java:124)
at android.webkit.WebViewCore$WebCoreThread.run(WebViewCore.java:920)
at java.lang.Thread.run(Thread.java:856)
"Binder_2" prio=5 tid=10 NATIVE
| group="main" sCount=1 dsCount=0 obj=0x40ef0750 self=0x5a78e0d0
| sysTid=3871 nice=0 sched=0/0 cgrp=apps handle=1483315936
| state=S schedstat=( 4287000 1864000 13 ) utm=0 stm=0 core=2
#00 pc 00016fe4 /system/lib/libc.so (__ioctl+8)
#01 pc 0002a9ad /system/lib/libc.so (ioctl+16)
#02 pc 00016ba1 /system/lib/libbinder.so (android::IPCThreadState::talkWithDriver(bool)+132)
#03 pc 00017363 /system/lib/libbinder.so (android::IPCThreadState::joinThreadPool(bool)+154)
#04 pc 0001b15d /system/lib/libbinder.so
#05 pc 00011267 /system/lib/libutils.so (android::Thread::_threadLoop(void*)+114)
#06 pc 00047657 /system/lib/libandroid_runtime.so (android::AndroidRuntime::javaThreadShell(void*)+66)
#07 pc 00010dcd /system/lib/libutils.so
#08 pc 0000e3d8 /system/lib/libc.so (__thread_entry+72)
#09 pc 0000dac4 /system/lib/libc.so (pthread_create+160)
at dalvik.system.NativeStart.run(Native Method)
"Binder_1" prio=5 tid=9 NATIVE
| group="main" sCount=1 dsCount=0 obj=0x40eed3b0 self=0x400ba600
| sysTid=3870 nice=0 sched=0/0 cgrp=apps handle=1359715720
| state=S schedstat=( 6634000 4035000 15 ) utm=0 stm=0 core=0
#00 pc 00016fe4 /system/lib/libc.so (__ioctl+8)
#01 pc 0002a9ad /system/lib/libc.so (ioctl+16)
#02 pc 00016ba1 /system/lib/libbinder.so (android::IPCThreadState::talkWithDriver(bool)+132)
#03 pc 00017363 /system/lib/libbinder.so (android::IPCThreadState::joinThreadPool(bool)+154)
#04 pc 0001b15d /system/lib/libbinder.so
#05 pc 00011267 /system/lib/libutils.so (android::Thread::_threadLoop(void*)+114)
#06 pc 00047657 /system/lib/libandroid_runtime.so (android::AndroidRuntime::javaThreadShell(void*)+66)
#07 pc 00010dcd /system/lib/libutils.so
#08 pc 0000e3d8 /system/lib/libc.so (__thread_entry+72)
#09 pc 0000dac4 /system/lib/libc.so (pthread_create+160)
at dalvik.system.NativeStart.run(Native Method)
"FinalizerWatchdogDaemon" daemon prio=5 tid=8 WAIT
| group="system" sCount=1 dsCount=0 obj=0x40ee9fd0 self=0x585bf408
| sysTid=3869 nice=0 sched=0/0 cgrp=apps handle=1490720336
| state=S schedstat=( 1012000 455000 5 ) utm=0 stm=0 core=0
at java.lang.Object.wait(Native Method)
- waiting on <0x40c8e5f0> (a java.lang.Daemons$FinalizerWatchdogDaemon)
at java.lang.Object.wait(Object.java:364)
at java.lang.Daemons$FinalizerWatchdogDaemon.waitForObject(Daemons.java:230)
at java.lang.Daemons$FinalizerWatchdogDaemon.run(Daemons.java:207)
at java.lang.Thread.run(Thread.java:856)
"FinalizerDaemon" daemon prio=5 tid=7 WAIT
| group="system" sCount=1 dsCount=0 obj=0x40ee9e20 self=0x5862d008
| sysTid=3868 nice=0 sched=0/0 cgrp=apps handle=1514179416
| state=S schedstat=( 63627000 14162000 64 ) utm=6 stm=0 core=3
at java.lang.Object.wait(Native Method)
- waiting on <0x40c7a610> (a java.lang.ref.ReferenceQueue)
at java.lang.Object.wait(Object.java:401)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:102)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:73)
at java.lang.Daemons$FinalizerDaemon.run(Daemons.java:170)
at java.lang.Thread.run(Thread.java:856)
"ReferenceQueueDaemon" daemon prio=5 tid=6 WAIT
| group="system" sCount=1 dsCount=0 obj=0x40ee9cb8 self=0x587bf3c8
| sysTid=3867 nice=0 sched=0/0 cgrp=apps handle=1458334392
| state=S schedstat=( 6227000 6534000 43 ) utm=0 stm=0 core=0
at java.lang.Object.wait(Native Method)
- waiting on <0x40c7a538>
at java.lang.Object.wait(Object.java:364)
at java.lang.Daemons$ReferenceQueueDaemon.run(Daemons.java:130)
at java.lang.Thread.run(Thread.java:856)
"Compiler" daemon prio=5 tid=5 VMWAIT
| group="system" sCount=1 dsCount=0 obj=0x40ee9bc8 self=0x56e67810
| sysTid=3866 nice=0 sched=0/0 cgrp=apps handle=1477360488
| state=S schedstat=( 152410000 44911000 752 ) utm=9 stm=6 core=3
#00 pc 00018104 /system/lib/libc.so (__futex_syscall3+8)
#01 pc 0000e41c /system/lib/libc.so (__pthread_cond_timedwait_relative+48)
#02 pc 0000e478 /system/lib/libc.so (__pthread_cond_timedwait+60)
#03 pc 00072c85 /system/lib/libdvm.so
#04 pc 0005405b /system/lib/libdvm.so
#05 pc 0000e3d8 /system/lib/libc.so (__thread_entry+72)
#06 pc 0000dac4 /system/lib/libc.so (pthread_create+160)
at dalvik.system.NativeStart.run(Native Method)
"JDWP" daemon prio=5 tid=4 VMWAIT
| group="system" sCount=1 dsCount=0 obj=0x40ee9ae0 self=0x586446c0
| sysTid=3865 nice=0 sched=0/0 cgrp=apps handle=1457404880
| state=S schedstat=( 3200000 8133000 15 ) utm=0 stm=0 core=3
#00 pc 0001710c /system/lib/libc.so (select+20)
#01 pc 00060c8b /system/lib/libdvm.so
#02 pc 0006381d /system/lib/libdvm.so
#03 pc 0005405b /system/lib/libdvm.so
#04 pc 0000e3d8 /system/lib/libc.so (__thread_entry+72)
#05 pc 0000dac4 /system/lib/libc.so (pthread_create+160)
at dalvik.system.NativeStart.run(Native Method)
"Signal Catcher" daemon prio=5 tid=3 RUNNABLE
| group="system" sCount=0 dsCount=0 obj=0x40ee99e8 self=0x56e5ebe8
| sysTid=3864 nice=0 sched=0/0 cgrp=apps handle=1477364616
| state=R schedstat=( 16076000 21692000 20 ) utm=1 stm=0 core=0
at dalvik.system.NativeStart.run(Native Method)
"GC" daemon prio=5 tid=2 VMWAIT
| group="system" sCount=1 dsCount=0 obj=0x40ee9908 self=0x58a14928
| sysTid=3863 nice=0 sched=0/0 cgrp=apps handle=1489737912
| state=S schedstat=( 339909000 49610000 132 ) utm=33 stm=0 core=0
#00 pc 00018104 /system/lib/libc.so (__futex_syscall3+8)
#01 pc 0000e41c /system/lib/libc.so (__pthread_cond_timedwait_relative+48)
#02 pc 0000e478 /system/lib/libc.so (__pthread_cond_timedwait+60)
#03 pc 00071a37 /system/lib/libdvm.so
#04 pc 0005405b /system/lib/libdvm.so
#05 pc 0000e3d8 /system/lib/libc.so (__thread_entry+72)
#06 pc 0000dac4 /system/lib/libc.so (pthread_create+160)
at dalvik.system.NativeStart.run(Native Method)
NATIVE THREADS:
"WebViewCoreThre" sysTid=3875 nice=0 sched=0/0 cgrp=apps
| state=S schedstat=( 512000 0 4 ) utm=0 stm=0 core=3
"SignalSender" sysTid=3877 nice=0 sched=0/0 cgrp=apps
| state=S schedstat=( 10025000 25432000 166 ) utm=0 stm=1 core=0
"[my package id]" sysTid=3881 nice=0 sched=0/0 cgrp=apps
| state=S schedstat=( 43000 0 1 ) utm=0 stm=0 core=3
"TexturesGenerat" sysTid=3886 nice=0 sched=0/0 cgrp=apps
| state=S schedstat=( 248008000 76502000 297 ) utm=17 stm=7 core=0
----- end 3859 -----
更新：只有当我的 setUncaughtExceptionHandler 处理程序被多次调用时，我才会得到这个。