I have an application which displays a series of custom views in a
LinearLayout. The LinearLayout is in a ScrollView. The custom views
draw a picture, when their onDraw method is called. Generally this
works fine. But occasionally the application causes an ANR on a
drawPicture() call. Based on log statements, I'm positive that it is
the drawPicture() method which is hanging, and producing the ANR.
This is confusing, because the drawPicture() usually takes a few
milliseconds.
This is very confusing and frustrating. Any help would be greatly
appreciated.
The contents of traces.txt and my logcat are below:
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)
This is the logcat output:
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}
lb=android.view.viewroo...@4387d4
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
droid.os.binderpr...@4392e9b8 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
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