彩投网站建设,金融网站建设成功案例,免费创建个人网页,网站开发 视频存储一#xff1a;什么是ANRANR:Application Not Responding#xff0c;即应用无响应二#xff1a;ANR的类型ANR一般有三种类型#xff1a;1#xff1a;KeyDispatchTimeout(5 seconds) --主要类型按键或触摸事件在特定时间内无响应2#xff1a;BroadcastTimeout(10 seconds)B…一什么是ANRANR:Application Not Responding即应用无响应二ANR的类型ANR一般有三种类型1KeyDispatchTimeout(5 seconds) --主要类型按键或触摸事件在特定时间内无响应2BroadcastTimeout(10 seconds)BroadcastReceiver在特定时间内无法处理完成3ServiceTimeout(20 seconds) --小概率类型Service在特定的时间内无法处理完成三KeyDispatchTimeoutAkey or touch event was not dispatched within the specified time(按键或触摸事件在特定时间内无响应)具体的超时时间的定义在framework下的ActivityManagerService.java//How long we wait until we timeout on key dispatching.staticfinal int KEY_DISPATCHING_TIMEOUT 5*1000四为什么会超时呢超时时间的计数一般是从按键分发给app开始。超时的原因一般有两种(1)当前的事件没有机会得到处理(即UI线程正在处理前一个事件没有及时的完成或者looper被某种原因阻塞住了)(2)当前的事件正在处理但没有及时完成五如何避免KeyDispatchTimeout1UI线程尽量只做跟UI相关的工作2耗时的工作(比如数据库操作I/O连接网络或者别的有可能阻碍UI线程的操作)把它放入单独的线程处理3尽量用Handler来处理UIthread和别的thread之间的交互六UI线程说了那么多的UI线程那么哪些属于UI线程呢UI线程主要包括如下Activity:onCreate(), onResume(), onDestroy(), onKeyDown(), onClick(),etcAsyncTask: onPreExecute(), onProgressUpdate(), onPostExecute(), onCancel,etcMainthread handler: handleMessage(), post*(runnable r), etcother七:如何去分析ANR先看个LOG:04-01 13:12:11.572I/InputDispatcher( 220): Application is not responding:Window{2b263310com.android.email/com.android.email.activity.SplitScreenActivitypausedfalse}. 5009.8ms since event, 5009.5ms since waitstarted04-0113:12:11.572 I/WindowManager( 220): Input event dispatching timedout sending tocom.android.email/com.android.email.activity.SplitScreenActivity04-0113:12:14.123 I/Process( 220): Sending signal. PID: 21404 SIG: 3---发生ANR的时间和生成trace.txt的时间04-01 13:12:14.123 I/dalvikvm(21404):threadid4: reacting to signal 3……04-0113:12:15.872 E/ActivityManager( 220): ANR in com.android.email(com.android.email/.activity.SplitScreenActivity)04-0113:12:15.872 E/ActivityManager( 220): Reason:keyDispatchingTimedOut04-0113:12:15.872 E/ActivityManager( 220): Load: 8.68 / 8.37 / 8.5304-0113:12:15.872 E/ActivityManager( 220):CPUusage from 4361ms to 699ms ago----CPU在ANR发生前的使用情况04-0113:12:15.872 E/ActivityManager( 220): 5.5%21404/com.android.email: 1.3% user 4.1% kernel / faults: 10 minor04-0113:12:15.872 E/ActivityManager( 220): 4.3%220/system_server: 2.7% user 1.5% kernel / faults: 11 minor 2 major04-0113:12:15.872 E/ActivityManager( 220): 0.9%52/spi_qsd.0: 0% user 0.9% kernel04-0113:12:15.872 E/ActivityManager( 220): 0.5%65/irq/170-cyttsp-: 0% user 0.5% kernel04-0113:12:15.872 E/ActivityManager( 220): 0.5%296/com.android.systemui: 0.5% user 0% kernel04-0113:12:15.872 E/ActivityManager( 220):100%TOTAL: 4.8% user 7.6% kernel 87% iowait04-0113:12:15.872 E/ActivityManager( 220):CPUusage from 3697ms to 4223ms later:-- ANR后CPU的使用量04-0113:12:15.872 E/ActivityManager( 220): 25%21404/com.android.email: 25% user 0% kernel / faults: 191 minor04-0113:12:15.872 E/ActivityManager( 220): 16% 21603/__eas(par.hakan: 16% user 0% kernel04-0113:12:15.872 E/ActivityManager( 220): 7.2% 21406/GC: 7.2% user 0% kernel04-0113:12:15.872 E/ActivityManager( 220): 1.8% 21409/Compiler: 1.8% user 0% kernel04-0113:12:15.872 E/ActivityManager( 220): 5.5%220/system_server: 0% user 5.5% kernel / faults: 1 minor04-0113:12:15.872 E/ActivityManager( 220): 5.5% 263/InputDispatcher: 0% user 5.5% kernel04-0113:12:15.872 E/ActivityManager( 220):32%TOTAL: 28% user 3.7% kernel从LOG可以看出ANR的类型CPU的使用情况如果CPU使用量接近100%说明当前设备很忙有可能是CPU饥饿导致了ANR如果CPU使用量很少说明主线程被BLOCK了如果IOwait很高说明ANR有可能是主线程在进行I/O操作造成的除了看LOG解决ANR还得需要trace.txt文件如何获取呢可以用如下命令获取$chmod 777 /data/anr$rm /data/anr/traces.txt$ps$kill -3PIDadbpull data/anr/traces.txt ./mytraces.txt从trace.txt文件看到最多的是如下的信息-----pid 21404 at 2011-04-0113:12:14 -----Cmdline: com.android.emailDALVIK THREADS:(mutexes: tll0tsl0 tscl0 ghl0 hwl0 hwll0)main prio5 tid1NATIVE| groupmain sCount1 dsCount0obj0x2aad2248 self0xcf70| sysTid21404 nice0 sched0/0cgrp[fopen-error:2] handle1876218976atandroid.os.MessageQueue.nativePollOnce(Native Method)atandroid.os.MessageQueue.next(MessageQueue.java:119)atandroid.os.Looper.loop(Looper.java:110)at android.app.ActivityThread.main(ActivityThread.java:3688)at java.lang.reflect.Method.invokeNative(Native Method)atjava.lang.reflect.Method.invoke(Method.java:507)atcom.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:624)at dalvik.system.NativeStart.main(Native Method)说明主线程在等待下条消息进入消息队列八Thread状态ThreadState (defined at “dalvik/vm/thread.h “)THREAD_UNDEFINED -1, /* makes enum compatible with int32_t */THREAD_ZOMBIE 0, /* TERMINATED */THREAD_RUNNING 1, /* RUNNABLE or running now */THREAD_TIMED_WAIT 2, /* TIMED_WAITING in Object.wait() */THREAD_MONITOR 3, /* BLOCKED on a monitor */THREAD_WAIT 4, /* WAITING in Object.wait() */THREAD_INITIALIZING 5, /* allocated, not yet running */THREAD_STARTING 6, /* started, not yet on thread list */THREAD_NATIVE 7, /* off in a JNI native method */THREAD_VMWAIT 8, /* waiting on a VM resource */THREAD_SUSPENDED 9, /* suspended, usually by GC or debugger */九如何调查并解决ANR1首先分析log2:从trace.txt文件查看调用stack.3:看代码4仔细查看ANR的成因(iowait?block?memoryleak?)十案例案例1关键词:ContentResolver in AsyncTask onPostExecute, high iowaitProcess:com.android.emailActivity:com.android.email/.activity.MessageViewSubject:keyDispatchingTimedOutCPU usage from 2550ms to -2814ms ago:5%187/system_server: 3.5% user 1.4% kernel / faults: 86 minor 20major4.4% 1134/com.android.email: 0.7% user 3.7% kernel /faults: 38 minor 19 major4% 372/com.android.eventstream: 0.7%user 3.3% kernel / faults: 6 minor1.1% 272/com.android.phone:0.9% user 0.1% kernel / faults: 33 minor0.9%252/com.android.systemui: 0.9% user 0% kernel0%409/com.android.eventstream.telephonyplugin: 0% user 0% kernel /faults: 2 minor0.1% 632/com.android.devicemonitor: 0.1% user 0%kernel100%TOTAL: 6.9% user 8.2% kernel 84%iowait-----pid 1134 at 2010-12-17 17:46:51 -----Cmd line:com.android.emailDALVIK THREADS:(mutexes: tll0 tsl0tscl0 ghl0 hwl0 hwll0)main prio5 tid1 WAIT|groupmain sCount1 dsCount0 obj0x2aaca180self0xcf20| sysTid1134 nice0 sched0/0 cgrp[fopen-error:2]handle1876218976at java.lang.Object.wait(Native Method)-waiting on 0x2aaca218 (a java.lang.VMThread)atjava.lang.Thread.parkFor(Thread.java:1424)atjava.lang.LangAccessImpl.parkFor(LangAccessImpl.java:48)atsun.misc.Unsafe.park(Unsafe.java:337)atjava.util.concurrent.locks.LockSupport.park(LockSupport.java:157)atjava.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:808)atjava.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:841)atjava.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1171)atjava.util.concurrent.locks.ReentrantLock$FairSync.lock(ReentrantLock.java:200)atjava.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:261)atandroid.database.sqlite.SQLiteDatabase.lock(SQLiteDatabase.java:378)atandroid.database.sqlite.SQLiteCursor.(SQLiteCursor.java:222)atandroid.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:53)atandroid.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1356)atandroid.database.sqlite.SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1235)atandroid.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1189)atandroid.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1271)atcom.android.email.provider.EmailProvider.query(EmailProvider.java:1098)atandroid.content.ContentProvider$Transport.query(ContentProvider.java:187)atandroid.content.ContentResolver.query(ContentResolver.java:268)atcom.android.email.provider.EmailContent$Message.restoreMessageWithId(EmailContent.java:648)atcom.android.email.Controller.setMessageRead(Controller.java:658)atcom.android.email.activity.MessageView.onMarkAsRead(MessageView.java:700)atcom.android.email.activity.MessageView.access$2500(MessageView.java:98)atcom.android.email.activity.MessageView$LoadBodyTask.onPostExecute(MessageView.java:1290)atcom.android.email.activity.MessageView$LoadBodyTask.onPostExecute(MessageView.java:1255)atandroid.os.AsyncTask.finish(AsyncTask.java:417)atandroid.os.AsyncTask.access$300(AsyncTask.java:127)atandroid.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:429)atandroid.os.Handler.dispatchMessage(Handler.java:99)atandroid.os.Looper.loop(Looper.java:123)atandroid.app.ActivityThread.main(ActivityThread.java:3652)atjava.lang.reflect.Method.invokeNative(Native Method)atjava.lang.reflect.Method.invoke(Method.java:507)atcom.android.internal.os.ZygoteIn原因IOWait很高说明当前系统在忙于I/O因此数据库操作被阻塞原来finalMessagemessageMessage.restoreMessageWithId(mProviderContext,messageId);if(messagenull){return;}AccountaccountAccount.restoreAccountWithId(mProviderContext,message.mAccountKey);if(accountnull){return;//isMessagingController returns false for null, but lets make itclear.}if(isMessagingController(account)){new Thread(){Overridepublic void run(){mLegacyController.processPendingActions(message.mAccountKey);}}.start();}解决后newThread() {finalMessagemessageMessage.restoreMessageWithId(mProviderContext,messageId);if(messagenull){return;}AccountaccountAccount.restoreAccountWithId(mProviderContext,message.mAccountKey);if(accountnull){return;//isMessagingController returns false for null, but lets make itclear.}if(isMessagingController(account)) {mLegacyController.processPendingActions(message.mAccountKey);}}.start();案例2关键词:在UI线程进行网络数据的读写ANRin process: com.android.mediascape:PhotoViewer (last incom.android.mediascape:PhotoViewer)Annotation:keyDispatchingTimedOutCPU usage:Load: 6.74 / 6.89 / 6.12CPUusage from 8254ms to 3224ms ago:ovider.webmedia: 4% 4% user 0% kernel / faults: 68 minorsystem_server: 2% 1% user 0%kernel / faults: 18 minorre-initialized: 0% 0% user 0%kernel / faults: 50 minorevents/0: 0% 0% user 0%kernelTOTAL:7% 6% user 1% kernelDALVIKTHREADS:main prio5 tid3 NATIVE|groupmain sCount1 dsCount0 sYobj0x4001b240 self0xbda8| sysTid2579 nice0 sched0/0cgrpunknown handle-1343993184atorg.apache.harmony.luni.platform.OSNetworkSystem.receiveStreamImpl(NativeMethod)atorg.apache.harmony.luni.platform.OSNetworkSystem.receiveStream(OSNetworkSystem.java:478)atorg.apache.harmony.luni.net.PlainSocketImpl.read(PlainSocketImpl.java:565)atorg.apache.harmony.luni.net.SocketInputStream.read(SocketInputStream.java:87)atorg.apache.harmony.luni.internal.net.(HttpURLConnection.java:303)atjava.io.InputStream.read(InputStream.java:133)atjava.io.BufferedInputStream.fillbuf(BufferedInputStream.java:157)atjava.io.BufferedInputStream.read(BufferedInputStream.java:346)atandroid.graphics.BitmapFactory.nativeDecodeStream(Native Method)atandroid.graphics.BitmapFactory.decodeStream(BitmapFactory.java:459)atcom.android.mediascape.activity.PhotoViewerActivity.getPreviewImage(PhotoViewerActivity.java:4465)atcom.android.mediascape.activity.PhotoViewerActivity.dispPreview(PhotoViewerActivity.java:4406)atcom.android.mediascape.activity.PhotoViewerActivity.access$6500(PhotoViewerActivity.java:125)atcom.android.mediascape.activity.PhotoViewerActivity$33$1.run(PhotoViewerActivity.java:4558)atandroid.os.Handler.handleCallback(Handler.java:587)atandroid.os.Handler.dispatchMessage(Handler.java:92)atandroid.os.Looper.loop(Looper.java:123)atandroid.app.ActivityThread.main(ActivityThread.java:4370)atjava.lang.reflect.Method.invokeNative(Native Method)atjava.lang.reflect.Method.invoke(Method.java:521)atcom.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)atcom.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)atdalvik.system.NativeStart.main(Native Method)关于网络连接在设计的时候可以设置个timeout的时间或者放入独立的线程来处理。案例3关键词Memoryleak/Thread leak11-1621:41:42.560 I/ActivityManager( 1190): ANR in process:android.process.acore (last in android.process.acore)11-1621:41:42.560 I/ActivityManager( 1190): Annotation:keyDispatchingTimedOut11-16 21:41:42.560 I/ActivityManager(1190): CPU usage:11-16 21:41:42.560 I/ActivityManager( 1190):Load: 11.5 / 11.1 / 11.0911-16 21:41:42.560 I/ActivityManager(1190): CPU usage from 9046ms to 4018ms ago:11-16 21:41:42.560I/ActivityManager( 1190):d.process.acore:98% 97% user 0% kernel / faults: 1134 minor11-16 21:41:42.560I/ActivityManager( 1190): system_server: 0% 0% user 0% kernel /faults: 1 minor11-16 21:41:42.560 I/ActivityManager( 1190): adbd:0% 0% user 0% kernel11-16 21:41:42.560 I/ActivityManager(1190): logcat: 0% 0% user 0% kernel11-16 21:41:42.560I/ActivityManager( 1190):TOTAL:100% 98% user 1% kernelCmdline: android.process.acoreDALVIK THREADS:mainprio5 tid3VMWAIT|groupmain sCount1 dsCount0 sN obj0x40026240self0xbda8| sysTid1815 nice0 sched0/0 cgrpunknownhandle-1344001376atdalvik.system.VMRuntime.trackExternalAllocation(NativeMethod)atandroid.graphics.Bitmap.nativeCreate(Native Method)atandroid.graphics.Bitmap.createBitmap(Bitmap.java:468)atandroid.view.View.buildDrawingCache(View.java:6324)atandroid.view.View.getDrawingCache(View.java:6178)atandroid.view.ViewGroup.drawChild(ViewGroup.java:1541)……atcom.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1830)atandroid.view.ViewRoot.draw(ViewRoot.java:1349)atandroid.view.ViewRoot.performTraversals(ViewRoot.java:1114)atandroid.view.ViewRoot.handleMessage(ViewRoot.java:1633)atandroid.os.Handler.dispatchMessage(Handler.java:99)atandroid.os.Looper.loop(Looper.java:123)atandroid.app.ActivityThread.main(ActivityThread.java:4370)atjava.lang.reflect.Method.invokeNative(Native Method)atjava.lang.reflect.Method.invoke(Method.java:521)atcom.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)atcom.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)atdalvik.system.NativeStart.main(Native Method)Thread-408prio5 tid329 WAIT|groupmain sCount1 dsCount0 sN obj0x46910d40self0xcd0548| sysTid10602 nice0 sched0/0 cgrpunknownhandle15470792at java.lang.Object.wait(Native Method)-waiting on 0x468cd420 (a java.lang.Object)atjava.lang.Object.wait(Object.java:288)atcom.android.dialer.CallLogContentHelper$UiUpdaterExecutor$1.run(CallLogContentHelper.java:289)atjava.lang.Thread.run(Thread.java:1096)分析atdalvik.system.VMRuntime.trackExternalAllocation(NativeMethod)内存不足导致block在创建bitmap上**MEMINFO in pid 1360 [android.process.acore] **native dalvik other totalsize: 1703623111N/A 40147allocated: 16484 20675 N/A 37159free: 296 2436 N/A 2732解决如果机器的内存族可以修改虚拟机的内存为36M或更大不过最好是复查代码查看哪些内存没有释放
