Android应用程序在运行时突然崩溃? [英] Android App Crashes Suddenly while running?
问题描述
我的应用能做什么?我正在开发的应用程序是一个典型的客户端服务器应用程序，它使用 Wifi 与 Windows 服务器通信.该应用程序有多个活动，并且确实需要大量内存和 CPU，即对 speex 编码/解码的本机调用.
What my App does ? The App I am developing is a typical client server App which talks to a windows server using Wifi. The Application has multiple Activities and really has heavy memory and CPU requirements i.e native calls for speex encoding / decoding.
我的问题是什么?问题是应用程序在正常工作时突然重新启动.有时在正常工作时突然我看到(在 logcat 中)应用程序类的构造函数(扩展 API 应用程序类的类)被调用.这会使我的应用程序崩溃，因为所有全局数据都存储在 Application 类本身中.
What my Problem is ? The problem is the Application restarts suddenly while working absolutely fine. Sometimes while working normally suddenly I see (in logcat ) that the Constructor of Application class (Class which extends API's Application Class) is called. That crashes my App since all the global data is stored with in the Application class itself.
我做了什么?让我想到的第一件事是可能是 Android 觉得他们的内存不足，所以它终止了我的应用程序，然后自动重新启动它.所以我实现了Application类的onLowMemory().但令我惊讶的是，它从未被调用..
What I have done ?
The first thing which struck my mind was that may be Android feels their is low memory so it terminates my App, and than restarts it automatically. So I implemented onLowMemory() of Application class. But to my surprise it is never called..
主要问题是什么?主要问题是LogCat上什么都没有打印.看起来即使是 Android 本身也不知道为什么要重新启动我已经运行的应用程序?
What is the main problem ? The main problem is that Nothing is printed on LogCat. It looks that even the Android itself is clueless about why it restarted my already running Application ?
这次突然重启的可能原因是什么?我怎样才能避免这种情况?
What could be the possible reason of this sudden restart ? How can I avoid that ?
我正在开发 Galaxy Y，API 版本是 2.3.6.我的 AndroidManifiest.xml 看起来像
I am working on Galaxy Y, and the API version is 2.3.6. My AndroidManifiest.xml looks like
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="some.package.MyApp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:maxSdkVersion="15"
android:minSdkVersion="10"
android:targetSdkVersion="10" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.RECORD_VIDEO" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<application
android:name="some.package.MyApp"
android:icon="@drawable/display_image"
android:label="@string/app_name" >
<activity
android:name="some.package.LoginActivity"
android:configChanges="keyboardHidden|orientation"
android:label="@string/app_name"
android:screenOrientation="user" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="some.package.BuddyListActivity"
android:configChanges="keyboardHidden|orientation"
android:label="@string/app_name"
android:screenOrientation="user"
android:theme="@android:style/Theme.Black.NoTitleBar" >
<!--
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
-->
</activity>
<activity
android:name="some.package.SessionWindowActivity"
android:configChanges="keyboardHidden|orientation"
android:label="@string/app_name"
android:screenOrientation="user"
android:theme="@android:style/Theme.Black.NoTitleBar" >
<!--
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
-->
</activity>
</application>
</manifest>
编辑我刚刚在使用 CheckJNI 后在 LogCat 中看到了以下输出，
EDIT I just saw following output in LogCat after using CheckJNI,
06-26 17:27:30.023: I/remove(24544): Sending Signal : 13 **//App Working fine here**
06-26 17:27:32.148: D/dalvikvm(24544): GC_CONCURRENT freed 446K, 49% free 3384K/6599K, external 1057K/1076K, paused 3ms+4ms
06-26 17:27:39.531: W/dalvikvm(24544): **HeapWorker may be wedged: 7374ms spent** inside LsomePackageName/modules/AudioPlayer;.finalize()V
06-26 17:27:40.023: I/remove(24544): Sending Signal : 13
06-26 17:27:40.218: D/dalvikvm(24544): GC_CONCURRENT freed 479K, 49% free 3383K/6599K, external 1057K/1076K, paused 9ms+5ms
06-26 17:27:42.343: E/RoobrooApp(24670): Application Instance created **//Restarted**
06-26 17:27:42.351: I/ApplicationPackageManager(24670): cscCountry is not German : INS
更新在一步进一步试验时，我故意为双数组分配了一个非常大的内存.但令我惊讶的是，没有调用 onLowMemory() 也没有重新启动应用程序，而是我得到了 outOfMemoryException.如果永远不会调用 onLowMemory() 为什么它会在那里?
UPDATE While experimenting further at one step I intentionally allocated a very large memory for a double array. But to my surprise neither onLowMemory() called nor the App restarted instead I got outOfMemoryException. If onLowMemory() is never called why it is there ?
还有一个问题是重启后操作系统已经启动了 BuddyListActivity 而不是 LoginActivity... 真的需要帮助 ....
One more problem is that after restart OS already starts BuddyListActivity instead of LoginActivity... Help really needed ....
更新 2我刚看到下面的错误日志，我真的不知道这是什么意思..
UPDATE 2 I just saw following error log, I really don't know what that means..
06-29 12:07:28.398: W/dalvikvm(19308): ReferenceTable overflow (max=1024)
06-29 12:07:28.398: W/dalvikvm(19308): Last 10 entries in JNI pinned array reference table:
06-29 12:07:28.398: W/dalvikvm(19308): 1014: 0x405b0280 cls=[B (340 bytes)
06-29 12:07:28.398: W/dalvikvm(19308): 1015: 0x405b03d8 cls=[S (660 bytes)
06-29 12:07:28.398: W/dalvikvm(19308): 1016: 0x405d8208 cls=[B (340 bytes)
06-29 12:07:28.398: W/dalvikvm(19308): 1017: 0x405d8360 cls=[S (660 bytes)
06-29 12:07:28.398: W/dalvikvm(19308): 1018: 0x405f8b08 cls=[B (340 bytes)
06-29 12:07:28.398: W/dalvikvm(19308): 1019: 0x405f8c60 cls=[S (660 bytes)
06-29 12:07:28.398: W/dalvikvm(19308): 1020: 0x405f8ef8 cls=[B (340 bytes)
06-29 12:07:28.398: W/dalvikvm(19308): 1021: 0x405ff698 cls=[S (660 bytes)
06-29 12:07:28.398: W/dalvikvm(19308): 1022: 0x405f9050 cls=[B (340 bytes)
06-29 12:07:28.398: W/dalvikvm(19308): 1023: 0x405ff930 cls=[S (660 bytes)
06-29 12:07:28.398: W/dalvikvm(19308): JNI pinned array reference table summary (1024 entries):
06-29 12:07:28.398: W/dalvikvm(19308): 1 of [B 20B
06-29 12:07:28.398: W/dalvikvm(19308): 508 of [B 340B (508 unique)
06-29 12:07:28.398: W/dalvikvm(19308): 3 of [B 348B (3 unique)
06-29 12:07:28.406: W/dalvikvm(19308): 511 of [S 660B (511 unique)
06-29 12:07:28.406: W/dalvikvm(19308): 1 of [S 668B
06-29 12:07:28.406: W/dalvikvm(19308): Memory held directly by tracked refs is 511712 bytes
06-29 12:07:28.406: E/dalvikvm(19308): Failed adding to JNI pinned array ref table (1024 entries)
06-29 12:07:28.406: I/dalvikvm(19308): "Thread-14" prio=5 tid=12 RUNNABLE
06-29 12:07:28.406: I/dalvikvm(19308): | group="main" sCount=0 dsCount=0 obj=0x4050e548 self=0x2240b8
06-29 12:07:28.406: I/dalvikvm(19308): | sysTid=19953 nice=-19 sched=0/0 cgrp=[fopen-error:2] handle=1905240
06-29 12:07:28.406: I/dalvikvm(19308): | schedstat=( 207153329 82244881 1015 )
06-29 12:07:28.406: I/dalvikvm(19308): at some.package.MyApp.speex.SpeexEncoder.encode(Native Method)
06-29 12:07:28.406: I/dalvikvm(19308): at some.package.MyApp.speex.SpeexEncoder.encodeFrame(SpeexEncoder.java:51)
06-29 12:07:28.406: I/dalvikvm(19308): at some.package.MyApp.models.Session.capturedAudioReceived(Session.java:656)
06-29 12:07:28.406: I/dalvikvm(19308): at some.package.MyApp.modules.AudioCapturer.run(AudioCapturer.java:118)
06-29 12:07:28.406: I/dalvikvm(19308): at java.lang.Thread.run(Thread.java:1019)
06-29 12:07:28.406: E/dalvikvm(19308): VM aborting
06-29 12:07:29.726: W/AudioTrack(19308): obtainBuffer() track 0x1d3520 disabled, restarting
06-29 12:07:30.351: W/dalvikvm(19308): threadid=4: spin on suspend #1 threadid=1 (pcf=0)
06-29 12:07:30.898: W/AudioTrack(19308): obtainBuffer() track 0x1d3520 disabled, restarting
06-29 12:07:31.101: W/dalvikvm(19308): threadid=4: spin on suspend #2 threadid=1 (pcf=0)
06-29 12:07:31.101: I/dalvikvm(19308): "Signal Catcher" daemon prio=5 tid=4 RUNNABLE
06-29 12:07:31.101: I/dalvikvm(19308): | group="system" sCount=0 dsCount=0 obj=0x40510490 self=0x159898
06-29 12:07:31.101: I/dalvikvm(19308): | sysTid=19312 nice=0 sched=0/0 cgrp=[fopen-error:2] handle=1575600
06-29 12:07:31.101: I/dalvikvm(19308): | schedstat=( 1556395 4913328 26 )
06-29 12:07:31.101: I/dalvikvm(19308): at dalvik.system.NativeStart.run(Native Method)
06-29 12:07:31.101: I/dalvikvm(19308): "main" prio=5 tid=1 RUNNABLE
06-29 12:07:31.101: I/dalvikvm(19308): | group="main" sCount=1 dsCount=0 obj=0x40022198 self=0xcec8
06-29 12:07:31.101: I/dalvikvm(19308): | sysTid=19308 nice=0 sched=0/0 cgrp=[fopen-error:2] handle=-1345006496
06-29 12:07:31.101: I/dalvikvm(19308): | schedstat=( 5364166234 3306213349 13647 )
06-29 12:07:31.101: I/dalvikvm(19308): at android.media.AudioTrack.native_write_short(Native Method)
06-29 12:07:31.101: I/dalvikvm(19308): at android.media.AudioTrack.write(AudioTrack.java:943)
06-29 12:07:31.101: I/dalvikvm(19308): at some.package.MyApp.modules.AudioPlayer.onPeriodicNotification(AudioPlayer.java:163)
06-29 12:07:31.101: I/dalvikvm(19308): at android.media.AudioTrack$NativeEventHandlerDelegate$1.handleMessage(AudioTrack.java:1084)
06-29 12:07:31.101: I/dalvikvm(19308): at android.os.Handler.dispatchMessage(Handler.java:99)
06-29 12:07:31.101: I/dalvikvm(19308): at android.os.Looper.loop(Looper.java:130)
06-29 12:07:31.101: I/dalvikvm(19308): at android.app.ActivityThread.main(ActivityThread.java:3687)
06-29 12:07:31.101: I/dalvikvm(19308): at java.lang.reflect.Method.invokeNative(Native Method)
06-29 12:07:31.101: I/dalvikvm(19308): at java.lang.reflect.Method.invoke(Method.java:507)
06-29 12:07:31.101: I/dalvikvm(19308): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
06-29 12:07:31.101: I/dalvikvm(19308): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
06-29 12:07:31.101: I/dalvikvm(19308): at dalvik.system.NativeStart.main(Native Method)
06-29 12:07:31.851: W/dalvikvm(19308): threadid=4: spin on suspend #3 threadid=1 (pcf=0)
06-29 12:07:31.851: I/dalvikvm(19308): "Signal Catcher" daemon prio=5 tid=4 RUNNABLE
06-29 12:07:31.851: I/dalvikvm(19308): | group="system" sCount=0 dsCount=0 obj=0x40510490 self=0x159898
06-29 12:07:31.851: I/dalvikvm(19308): | sysTid=19312 nice=0 sched=0/0 cgrp=[fopen-error:2] handle=1575600
06-29 12:07:31.851: I/dalvikvm(19308): | schedstat=( 2868652 6927485 37 )
06-29 12:07:31.851: I/dalvikvm(19308): at dalvik.system.NativeStart.run(Native Method)
06-29 12:07:31.851: I/dalvikvm(19308): "main" prio=5 tid=1 RUNNABLE
06-29 12:07:31.851: I/dalvikvm(19308): | group="main" sCount=1 dsCount=0 obj=0x40022198 self=0xcec8
06-29 12:07:31.851: I/dalvikvm(19308): | sysTid=19308 nice=0 sched=0/0 cgrp=[fopen-error:2] handle=-1345006496
06-29 12:07:31.851: I/dalvikvm(19308): | schedstat=( 5364166234 3306213349 13647 )
06-29 12:07:32.000: I/dalvikvm(19308): at android.media.AudioTrack.native_write_short(Native Method)
06-29 12:07:32.015: I/dalvikvm(19308): at android.media.AudioTrack.write(AudioTrack.java:943)
06-29 12:07:32.031: I/dalvikvm(19308): at some.package.MyApp.modules.AudioPlayer.onPeriodicNotification(AudioPlayer.java:163)
06-29 12:07:32.039: I/dalvikvm(19308): at android.media.AudioTrack$NativeEventHandlerDelegate$1.handleMessage(AudioTrack.java:1084)
06-29 12:07:32.054: I/dalvikvm(19308): at android.os.Handler.dispatchMessage(Handler.java:99)
06-29 12:07:32.054: I/dalvikvm(19308): at android.os.Looper.loop(Looper.java:130)
06-29 12:07:32.062: W/AudioTrack(19308): obtainBuffer() track 0x1d3520 disabled, restarting
06-29 12:07:32.070: I/dalvikvm(19308): at android.app.ActivityThread.main(ActivityThread.java:3687)
06-29 12:07:32.093: I/dalvikvm(19308): at java.lang.reflect.Method.invokeNative(Native Method)
06-29 12:07:32.101: I/dalvikvm(19308): at java.lang.reflect.Method.invoke(Method.java:507)
06-29 12:07:32.109: I/dalvikvm(19308): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
06-29 12:07:32.125: I/dalvikvm(19308): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
06-29 12:07:32.132: I/dalvikvm(19308): at dalvik.system.NativeStart.main(Native Method)
06-29 12:07:32.890: W/dalvikvm(19308): threadid=4: spin on suspend #4 threadid=1 (pcf=0)
06-29 12:07:32.890: I/dalvikvm(19308): "Signal Catcher" daemon prio=5 tid=4 RUNNABLE
06-29 12:07:32.890: I/dalvikvm(19308): | group="system" sCount=0 dsCount=0 obj=0x40510490 self=0x159898
06-29 12:07:32.890: I/dalvikvm(19308): | sysTid=19312 nice=0 sched=0/0 cgrp=[fopen-error:2] handle=1575600
06-29 12:07:32.890: I/dalvikvm(19308): | schedstat=( 5340582 316192616 59 )
06-29 12:07:32.898: I/dalvikvm(19308): at dalvik.system.NativeStart.run(Native Method)
06-29 12:07:32.898: I/dalvikvm(19308): "main" prio=5 tid=1 RUNNABLE
06-29 12:07:32.898: I/dalvikvm(19308): | group="main" sCount=1 dsCount=0 obj=0x40022198 self=0xcec8
06-29 12:07:32.898: I/dalvikvm(19308): | sysTid=19308 nice=0 sched=0/0 cgrp=[fopen-error:2] handle=-1345006496
06-29 12:07:32.898: I/dalvikvm(19308): | schedstat=( 5364166234 3306213349 13647 )
06-29 12:07:32.929: I/dalvikvm(19308): at android.media.AudioTrack.native_write_short(Native Method)
06-29 12:07:32.945: I/dalvikvm(19308): at android.media.AudioTrack.write(AudioTrack.java:943)
06-29 12:07:32.953: I/dalvikvm(19308): at some.package.MyApp.modules.AudioPlayer.onPeriodicNotification(AudioPlayer.java:163)
解决方案好吧，更改代码的测试仍在进行中，到目前为止一切似乎都是积极的.问题出在 JNI 内部(我猜).@n.Collins 声明 JVM 未报告错误这一事实也表明它是由您的本机代码引起的." 是指向解决方案的最正确指针之一.我真的很感谢所有回答它的人真的以某种方式帮助了我.多亏了社区，我在尝试解决这个问题时实际上删除了一组其他错误.
Solution Well the testing is still on for the changed code and everything seems positive so far.. The problem was inside JNI (I guess). @n.Collins statement "The fact that no error is reported by the JVM also indicates it caused by your native code." Was one of the most correct pointers towards the solution. I really thank all the people who answered it really helped me in some way or the other. I actually removed a set of other bugs while trying to solve this problem all thanks to the community.
推荐答案
根据更新 #2，很明显您未能在 JNI 中取消固定数组.这意味着您正在使用 Get<Type>ArrayElements 并且未能将这些调用中的一个或多个与 Release 匹配.
Based on Update #2, it is pretty clear that you have failed to unpin an array in your JNI. This means that you are using the Get<Type>ArrayElements and have failed to match 1 or more of these calls with Release<Type>ArrayElements.
因此，ReferenceTable 溢出.查找您调用 Get 而不是调用 Release 的位置.例如，您可能正在调用 GetIntArrayElements，但在完成后未能调用 ReleaseIntArrayElements.
As a result, the ReferenceTable is overflowing. Look for places where you are calling Get and not calling Release. For example you could be calling GetIntArrayElements but failing to call ReleaseIntArrayElements when you are finished.
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