Android：在drawPicture（）调用崩溃？

我有一个应用程序在LinearLayout中显示一系列自定义视图。 LinearLayout在ScrollView中。自定义视图在调用onDraw方法时绘制图片。通常这工作正常。但偶尔应用程序会在drawPicture（）调用中崩溃。当它崩溃时，似乎没有异常抛出，但我确实在logcat中得到了这条消息：“将堆栈跟踪写入'data/anr/traces.txt'”。Android：在drawPicture（）调用崩溃？

traces.txt的内容是如下：

DALVIK THREADS: 
"main" prio=5 tid=3 NATIVE 
    | group="main" sCount=1 dsCount=0 s=N obj=0x2aac2250 self=0x84d00 
    | sysTid=412 nice=0 sched=0/0 cgrp=unknown handle=2130112448 
    at android.graphics.Canvas.native_drawPicture(Native Method) 
    at android.graphics.Canvas.drawPicture(Canvas.java:1404) 
    at com.MyView.onDraw(PDFPageView.java:100) 
    at android.view.View.draw(View.java:6534) 
    at android.view.ViewGroup.drawChild(ViewGroup.java:1531) 
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258) 
    at android.view.View.draw(View.java:6537) 
    at android.view.ViewGroup.drawChild(ViewGroup.java:1531) 
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258) 
    at android.view.View.draw(View.java:6537) 
    at android.widget.FrameLayout.draw(FrameLayout.java:352) 
    at android.view.ViewGroup.drawChild(ViewGroup.java:1531) 
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258) 
    at android.view.View.draw(View.java:6537) 
    at android.widget.FrameLayout.draw(FrameLayout.java:352) 
    at android.view.ViewGroup.drawChild(ViewGroup.java:1531) 
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258) 
    at android.view.View.draw(View.java:6537) 
    at android.widget.FrameLayout.draw(FrameLayout.java:352) 
    at android.view.ViewGroup.drawChild(ViewGroup.java:1531) 
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258) 
    at android.view.ViewGroup.drawChild(ViewGroup.java:1529) 
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258) 
    at android.view.View.draw(View.java:6537) 
    at android.widget.FrameLayout.draw(FrameLayout.java:352) 
    at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1849) 
    at android.view.ViewRoot.draw(ViewRoot.java:1349) 
    at android.view.ViewRoot.performTraversals(ViewRoot.java:1114) 
    at android.view.ViewRoot.handleMessage(ViewRoot.java:1633) 
    at android.os.Handler.dispatchMessage(Handler.java:99) 
    at android.os.Looper.loop(Looper.java:123) 
    at android.app.ActivityThread.main(ActivityThread.java:4325) 
    at java.lang.reflect.Method.invokeNative(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:521) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 
    at dalvik.system.NativeStart.main(Native Method) 

"AsyncTask #1" prio=5 tid=17 WAIT 
    | group="main" sCount=1 dsCount=0 s=N obj=0x2e4262b0 self=0x351ab8 
    | sysTid=420 nice=10 sched=0/0 cgrp=unknown handle=3480528 
    at java.lang.Object.wait(Native Method) 
    - waiting on <0x195468> (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$ConditionObject.await(AbstractQueuedSynchronizer.java:1996) 
    at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:359) 
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1001) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1061) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561) 
    at java.lang.Thread.run(Thread.java:1096) 

"Binder Thread #3" prio=5 tid=15 NATIVE 
    | group="main" sCount=1 dsCount=0 s=N obj=0x2e3e9cc0 self=0x191798 
    | sysTid=419 nice=0 sched=0/0 cgrp=unknown handle=1738736 
    at dalvik.system.NativeStart.run(Native Method) 

"Binder Thread #2" prio=5 tid=13 NATIVE 
    | group="main" sCount=1 dsCount=0 s=N obj=0x2e3e9c00 self=0x1a7510 
    | sysTid=418 nice=0 sched=0/0 cgrp=unknown handle=1792360 
    at dalvik.system.NativeStart.run(Native Method) 

"Binder Thread #1" prio=5 tid=11 NATIVE 
    | group="main" sCount=1 dsCount=0 s=N obj=0x2e3e9b40 self=0x1aae60 
    | sysTid=417 nice=0 sched=0/0 cgrp=unknown handle=1738512 
    at dalvik.system.NativeStart.run(Native Method) 

"JDWP" daemon prio=5 tid=9 VMWAIT 
    | group="system" sCount=1 dsCount=0 s=N obj=0x2e3e82a0 self=0x1b82a0 
    | sysTid=416 nice=0 sched=0/0 cgrp=unknown handle=1792208 
    at dalvik.system.NativeStart.run(Native Method) 

"Signal Catcher" daemon prio=5 tid=7 RUNNABLE 
    | group="system" sCount=0 dsCount=0 s=N obj=0x2e3e81e8 self=0x1b9420 
    | sysTid=415 nice=0 sched=0/0 cgrp=unknown handle=1791968 
    at dalvik.system.NativeStart.run(Native Method) 

"HeapWorker" daemon prio=5 tid=5 VMWAIT 
    | group="system" sCount=1 dsCount=0 s=N obj=0x2d68c4c8 self=0x1b9968 
    | sysTid=413 nice=0 sched=0/0 cgrp=unknown handle=1792792 
    at dalvik.system.NativeStart.run(Native Method)

这是logcat的输出：（应用无响应）

W/WindowManager( 53): Key dispatching timed out sending to com.mypackage/com.mypackage.MyActivity 
W/WindowManager( 53): Dispatch state: {{KeyEvent{action=1 code=82 repeat=0 met 
a=0 scancode=229 mFlags=8} to Window{4387d7f8 Keyguard paused=false} @ 129122478 
0532 lw=Window{4387d7f8 Keyguard paused=false} [email protected] 
08 fin=false gfw=true ed=true tts=0 wf=false fp=false mcf=Window{4392eb90 com.mypackage 
s/com.mypackage.MyActivity paused=false}}} 
W/WindowManager( 53): Current state: {{null to Window{4392eb90 com.mypackage 
s/com.mypackage.MyActivity paused=false} @ 1291225159009 lw=Window{4 
392eb90 com.mypackage/com.mypackage.MyActivity paused=false} lb=an 
[email protected] fin=false gfw=true ed=true tts=0 wf=false fp=false 
mcf=Window{4392eb90 
com.mypackage/com.mypackage.MyActivity paused 
=false}}} 
I/ActivityManager( 53): ANR in process: com.mypackage 
(last in com.mypackage) 
I/ActivityManager( 53): Annotation: keyDispatchingTimedOut 
I/ActivityManager( 53): CPU usage: 
I/ActivityManager( 53): Load: 0.71/0.81/0.44 
I/ActivityManager( 53): CPU usage from 19028ms to 19ms ago: 
I/ActivityManager( 53): com.mypackage: 34% = 34% user + 0% kernel/f 
aults: 24 minor 
I/ActivityManager( 53): system_server: 2% = 1% user + 0% kernel/faults: 8 
minor 
I/ActivityManager( 53): com.android.phone: 0% = 0% user + 0% kernel 
I/ActivityManager( 53): adbd: 0% = 0% user + 0% kernel/faults: 72 minor 
I/ActivityManager( 53): TOTAL: 38% = 36% user + 2% kernel 
I/ActivityManager( 53): Removing old ANR trace file from /data/anr/traces.txt 
I/Process ( 53): Sending signal. PID: 514 SIG: 3 
I/dalvikvm( 514): threadid=7: reacting to signal 3 
I/dalvikvm( 514): Wrote stack trace to '/data/anr/traces.txt' 
I/Process ( 53): Sending signal. PID: 53 SIG: 3 
I/dalvikvm( 53): threadid=7: reacting to signal 3 
I/dalvikvm( 53): Wrote stack trace to '/data/anr/traces.txt' 
I/Process ( 53): Sending signal. PID: 96 SIG: 3 
I/dalvikvm( 96): threadid=7: reacting to signal 3 
I/dalvikvm( 96): Wrote stack trace to '/data/anr/traces.txt' 
I/Process ( 53): Sending signal. PID: 223 SIG: 3 
I/dalvikvm( 223): threadid=7: reacting to signal 3 
I/dalvikvm( 223): Wrote stack trace to '/data/anr/traces.txt' 
I/Process ( 53): Sending signal. PID: 140 SIG: 3 
I/dalvikvm( 140): threadid=7: reacting to signal 3 
I/dalvikvm( 140): Wrote stack trace to '/data/anr/traces.txt' 
I/Process ( 53): Sending signal. PID: 120 SIG: 3 
I/dalvikvm( 120): threadid=7: reacting to signal 3 
I/dalvikvm( 120): Wrote stack trace to '/data/anr/traces.txt' 
I/Process ( 53): Sending signal. PID: 172 SIG: 3 
I/dalvikvm( 172): threadid=7: reacting to signal 3 
I/dalvikvm( 172): Wrote stack trace to '/data/anr/traces.txt' 
I/Process ( 53): Sending signal. PID: 175 SIG: 3 
I/dalvikvm( 175): threadid=7: reacting to signal 3 
I/dalvikvm( 175): Wrote stack trace to '/data/anr/traces.txt' 
I/Process ( 53): Sending signal. PID: 94 SIG: 3 
I/dalvikvm( 94): threadid=7: reacting to signal 3 
I/dalvikvm( 94): Wrote stack trace to '/data/anr/traces.txt' 
W/WindowManager( 53): No window to dispatch pointer action 1 
W/WindowManager( 53): No window to dispatch pointer action 1 
W/WindowManager( 53): No window to dispatch pointer action 0 
W/WindowManager( 53): No window to dispatch pointer action 1 
D/dalvikvm( 53): GC freed 12498 objects/629776 bytes in 174ms

来源

2010-12-01 ab11

有时，traces.txt什么也没说。你最好粘贴logcat输出。 – Cristian 2010-12-01 17:29:16

谢谢，我的logcat看起来很没有信息，但是我添加了它。 – ab11 2010-12-01 17:50:34

这不崩溃，这是一个ANR这意味着您的应用程序需要很长时间才能响应某个事件（超过5秒钟）。

来源

2010-12-01 18:41:22

Android：在drawPicture（）调用崩溃？

回答

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