Develop Reference

OpenCV crashes after a short time in Android app

I have an app which performs some image stitching and uses OpenCV. It used to work but all of a sudden it crashes (randomly?) all of the time. I don't know why this happens, I didn't change the code, but also didn't try that feature for several weeks now. There was probably an Android update in the meantime on my Nvidia Shield.
It used to work with OpenCV 2.4.10, but since it didn't work with that version anymore, I've tried to switch to OpenCV 3.0.0 which shows the same behavior.
My setup:
Nvidia Shield with Android 5.1.1
Installed OpenCV_3.0.0_manager_3.00_armeabi-v7a.apk manager
Build target is Android 5.1.1
Integrated OpenCV 3.0 Library from the Android SDK into my Android project. Inside the SDK, this is the path to the library: %path-to-sdk%/OpenCV3-android-sdk/sdk/java
My application behaves like follows: It seems to successfully load and initialize OpenCV and even starts to capture and stitch together some images. After three or four images, it crashes. Here are the Android logs which are logged during the crash:
02-01 13:07:55.172: I/AudioFlinger(209): AUDIO_OUTPUT_FLAG_FAST accepted: frameCount=11258 mFrameCount=512
02-01 13:07:55.321: E/Camera2-ZslProcessor3(209): pushToReprocess: Could not find good candidate for ZSL reprocessing
02-01 13:07:55.582: E/Error(209): configureSensor: cannot find a sensor mode for 2592x1944
02-01 13:07:56.391: W/Camera2-ZslProcessor3(209): getCandidateTimestampLocked: ZSL queue has no metadata frames
02-01 13:07:56.391: E/Camera2-ZslProcessor3(209): pushToReprocess: Could not find good candidate for ZSL reprocessing
02-01 13:07:56.653: E/Error(209): configureSensor: cannot find a sensor mode for 2592x1944
02-01 13:07:56.745: I/ActivityManager(632): Process com.google.android.partnersetup (pid 22851) has died
02-01 13:07:57.301: W/Camera2-ZslProcessor3(209): getCandidateTimestampLocked: ZSL queue has no metadata frames
02-01 13:07:57.301: E/Camera2-ZslProcessor3(209): pushToReprocess: Could not find good candidate for ZSL reprocessing
02-01 13:07:57.640: E/Error(209): configureSensor: cannot find a sensor mode for 2592x1944
02-01 13:07:58.134: I/ActivityManager(632): Process com.google.android.calendar (pid 23255) has died
02-01 13:07:58.139: E/lowmemorykiller(174): Error writing /proc/22747/oom_score_adj; errno=22
02-01 13:07:58.146: I/BackgroundMemoryTrimmer(22823): Trimming objects from memory, since app is in the background.
02-01 13:07:58.173: I/PersonalGridService(22885): onTrimMemory called with level: 5
02-01 13:07:58.174: I/ActivityManager(632): Process android.process.acore (pid 22747) has died
02-01 13:07:58.271: W/Camera2-ZslProcessor3(209): getCandidateTimestampLocked: ZSL queue has no metadata frames
02-01 13:07:58.271: E/Camera2-ZslProcessor3(209): pushToReprocess: Could not find good candidate for ZSL reprocessing
02-01 13:07:58.322: I/ActivityManager(632): Process com.android.providers.calendar (pid 23231) has died
02-01 13:07:58.364: I/ActivityManager(632): Process com.google.android.apps.plus (pid 23125) has died
02-01 13:07:58.365: E/lowmemorykiller(174): Error writing /proc/23104/oom_score_adj; errno=22
02-01 13:07:58.369: I/PersonalGridService(22885): onTrimMemory called with level: 10
02-01 13:07:58.381: I/ActivityManager(632): Process com.android.chrome (pid 23104) has died
02-01 13:07:58.400: I/ActivityManager(632): Process com.google.android.apps.photos (pid 23029) has died
02-01 13:07:58.407: I/PersonalGridService(22885): onTrimMemory called with level: 15
02-01 13:07:58.432: I/ActivityManager(632): Process com.google.process.gapps (pid 22637) has died
02-01 13:07:58.433: E/lowmemorykiller(174): Error opening /proc/22823/oom_score_adj; errno=2
02-01 13:07:58.434: I/ActivityManager(632): Process com.google.android.googlequicksearchbox:search (pid 22823) has died
02-01 13:07:58.566: E/Error(209): configureSensor: cannot find a sensor mode for 2592x1944
02-01 13:07:58.608: I/ActivityManager(632): Process org.opencv.engine:OpenCVEngineProcess (pid 22529) has died
02-01 13:07:59.175: W/Camera2-ZslProcessor3(209): getCandidateTimestampLocked: ZSL queue has no metadata frames
02-01 13:07:59.175: E/Camera2-ZslProcessor3(209): pushToReprocess: Could not find good candidate for ZSL reprocessing
02-01 13:07:59.277: I/ActivityManager(632): Process com.google.android.talk (pid 22787) has died
02-01 13:07:59.277: W/ActivityManager(632): Scheduling restart of crashed service com.google.android.talk/com.google.android.libraries.hangouts.video.CallService in 1000ms
02-01 13:07:59.280: I/ActivityManager(632): Process android.process.media (pid 22454) has died
02-01 13:07:59.280: W/ActivityManager(632): Scheduling restart of crashed service com.android.providers.media/.MtpService in 1000ms
02-01 13:07:59.291: I/ActivityManager(632): Process com.nvidia.penapplauncher (pid 22972) has died
02-01 13:07:59.291: W/ActivityManager(632): Scheduling restart of crashed service com.nvidia.penapplauncher/com.nvidia.quickMenu.QuickMenuService in 10988ms
02-01 13:07:59.365: I/ActivityManager(632): Process com.nvidia.tegrazone3 (pid 22477) has died
02-01 13:07:59.365: W/ActivityManager(632): Scheduling restart of crashed service com.nvidia.tegrazone3/com.nvidia.tegrazone.account.AccountService in 20915ms
02-01 13:07:59.365: E/lowmemorykiller(174): Error opening /proc/22616/oom_score_adj; errno=2
02-01 13:07:59.366: I/ActivityManager(632): Process com.google.android.gms (pid 22616) has died
02-01 13:07:59.366: W/ActivityManager(632): Scheduling restart of crashed service com.google.android.gms/.analytics.service.AnalyticsService in 30914ms
02-01 13:07:59.441: E/Error(209): configureSensor: cannot find a sensor mode for 2592x1944
02-01 13:07:59.510: I/ActivityManager(632): Start proc 23500:com.nvidia.tegrazone3/u0a65 for service com.nvidia.tegrazone3/com.nvidia.tegrazone.account.AccountService
02-01 13:07:59.671: I/ActivityManager(632): Process com.nvidia.tegrazone3:PersonalGridService (pid 22885) has died
02-01 13:07:59.671: W/ActivityManager(632): Scheduling restart of crashed service com.nvidia.tegrazone3/com.nvidia.grid.PersonalGridService.pgService in 20609ms
02-01 13:07:59.966: W/Camera2-ZslProcessor3(209): getCandidateTimestampLocked: ZSL queue has no metadata frames
02-01 13:07:59.966: E/Camera2-ZslProcessor3(209): pushToReprocess: Could not find good candidate for ZSL reprocessing
02-01 13:08:00.020: I/ActivityManager(632): Process com.google.android.inputmethod.latin (pid 22923) has died
02-01 13:08:00.020: W/ActivityManager(632): Scheduling restart of crashed service com.google.android.inputmethod.latin/com.android.inputmethod.latin.LatinIME in 30260ms
02-01 13:08:00.100: I/ActivityManager(632): Process com.google.android.gms.persistent (pid 22659) has died
02-01 13:08:00.100: W/ActivityManager(632): Scheduling restart of crashed service com.google.android.gms/com.google.android.location.internal.PendingIntentCallbackService in 40180ms
02-01 13:08:00.100: W/ActivityManager(632): Scheduling restart of crashed service com.google.android.gms/.common.stats.GmsCoreStatsService in 50180ms
02-01 13:08:00.100: W/ActivityManager(632): Scheduling restart of crashed service com.google.android.gms/.backup.BackupTransportService in 60180ms
02-01 13:08:00.100: W/ActivityManager(632): Scheduling restart of crashed service com.google.android.gms/com.google.android.location.fused.FusedLocationService in 70180ms
02-01 13:08:00.100: W/ActivityManager(632): Scheduling restart of crashed service com.google.android.gms/.deviceconnection.service.DeviceConnectionServiceBroker in 80180ms
02-01 13:08:00.100: W/ActivityManager(632): Scheduling restart of crashed service com.google.android.gms/com.google.android.location.network.NetworkLocationService in 90180ms
02-01 13:08:00.100: W/ActivityManager(632): Scheduling restart of crashed service com.google.android.gms/com.google.android.location.geofencer.service.GeofenceProviderService in 100180ms
02-01 13:08:00.100: W/ActivityManager(632): Scheduling restart of crashed service com.google.android.gms/.gcm.GcmService in 110180ms
02-01 13:08:00.100: W/ActivityManager(632): Scheduling restart of crashed service com.google.android.gms/com.google.android.location.geocode.GeocodeService in 120180ms
02-01 13:08:00.100: W/ActivityManager(632): Scheduling restart of crashed service com.google.android.gms/com.google.android.location.internal.GoogleLocationManagerService in 130179ms
02-01 13:08:00.100: W/ActivityManager(632): Scheduling restart of crashed service com.google.android.gms/com.google.android.location.internal.server.GoogleLocationService in 140179ms
02-01 13:08:00.100: W/ActivityManager(632): Scheduling restart of crashed service com.google.android.gms/com.google.android.contextmanager.service.ContextManagerService in 150179ms
02-01 13:08:00.101: W/ActivityManager(632): Scheduling restart of crashed service com.google.android.gms/com.google.android.location.reporting.service.DispatchingService in 160179ms
02-01 13:08:00.116: I/WindowState(632): WIN DEATH: Window{1026bdfe u0 com.nvidia.ControllerMapper}
02-01 13:08:00.341: E/Surface(209): queueBuffer: error queuing buffer to SurfaceTexture, -32
02-01 13:08:00.343: W/InputDispatcher(632): channel '3438de7d mobileBRDF.Renderer/mobileBRDF.ImageProcessing.ImageProcessingActivity (server)' ~ Consumer closed input channel or an error occurred. events=0x9
02-01 13:08:00.343: E/InputDispatcher(632): channel '3438de7d mobileBRDF.Renderer/mobileBRDF.ImageProcessing.ImageProcessingActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
02-01 13:08:00.378: W/CameraService(209): Disconnecting camera client 0xae447290 since the binder for it died (this pid 209)
02-01 13:08:00.379: E/Camera3-OutputStream(209): returnBufferCheckedLocked: Stream 0: Error queueing buffer to native window: Broken pipe (-32)
02-01 13:08:00.379: E/Camera3-Device(209): Can't return buffer to its stream: Broken pipe (-32)
02-01 13:08:00.379: E/Camera3-OutputStream(209): getBufferLocked: Stream 0: Can't dequeue next output buffer: Broken pipe (-32)
02-01 13:08:00.379: E/Camera3-Device(209): RequestThread: Can't get output buffer, skipping request: Broken pipe (-32)
02-01 13:08:00.379: E/Camera2ClientBase(209): Error condition 3 reported by HAL, requestId 30000005
02-01 13:08:00.383: W/InputDispatcher(632): channel '24b71005 mobileBRDF.Renderer/mobileBRDF.HDR.EnvMapCaptureActivity (server)' ~ Consumer closed input channel or an error occurred. events=0x9
02-01 13:08:00.383: E/InputDispatcher(632): channel '24b71005 mobileBRDF.Renderer/mobileBRDF.HDR.EnvMapCaptureActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
02-01 13:08:00.396: E/Surface(209): queueBuffer: error queuing buffer to SurfaceTexture, -32
02-01 13:08:00.396: E/Camera3-OutputStream(209): returnBufferCheckedLocked: Stream 0: Error queueing buffer to native window: Broken pipe (-32)
02-01 13:08:00.396: E/Camera3-Device(209): Can't return buffer to its stream: Broken pipe (-32)
02-01 13:08:00.415: E/Surface(209): queueBuffer: error queuing buffer to SurfaceTexture, -32
02-01 13:08:00.415: E/Camera3-OutputStream(209): returnBufferCheckedLocked: Stream 0: Error queueing buffer to native window: Broken pipe (-32)
02-01 13:08:00.415: E/Camera3-Device(209): Can't return buffer to its stream: Broken pipe (-32)
02-01 13:08:00.431: E/Surface(209): queueBuffer: error queuing buffer to SurfaceTexture, -32
02-01 13:08:00.431: E/Camera3-OutputStream(209): returnBufferCheckedLocked: Stream 0: Error queueing buffer to native window: Broken pipe (-32)
02-01 13:08:00.431: E/Camera3-Device(209): Can't return buffer to its stream: Broken pipe (-32)
02-01 13:08:00.518: E/Surface(209): queueBuffer: error queuing buffer to SurfaceTexture, -32
02-01 13:08:00.518: E/Camera3-OutputStream(209): returnBufferCheckedLocked: Stream 0: Error queueing buffer to native window: Broken pipe (-32)
02-01 13:08:00.518: E/Camera3-Device(209): Can't return buffer to its stream: Broken pipe (-32)
02-01 13:08:00.571: E/Surface(209): queueBuffer: error queuing buffer to SurfaceTexture, -32
02-01 13:08:00.571: E/Camera3-OutputStream(209): returnBufferCheckedLocked: Stream 0: Error queueing buffer to native window: Broken pipe (-32)
02-01 13:08:00.571: E/Camera3-Device(209): Can't return buffer to its stream: Broken pipe (-32)
02-01 13:08:00.610: I/WindowState(632): WIN DEATH: Window{2fbeaa8b u0 SurfaceView}
02-01 13:08:00.844: I/WindowState(632): WIN DEATH: Window{24b71005 u0 mobileBRDF.Renderer/mobileBRDF.HDR.EnvMapCaptureActivity}
02-01 13:08:00.844: W/InputDispatcher(632): Attempted to unregister already unregistered input channel '24b71005 mobileBRDF.Renderer/mobileBRDF.HDR.EnvMapCaptureActivity (server)'
02-01 13:08:00.912: I/WindowState(632): WIN DEATH: Window{3438de7d u0 mobileBRDF.Renderer/mobileBRDF.ImageProcessing.ImageProcessingActivity}
02-01 13:08:00.912: W/InputDispatcher(632): Attempted to unregister already unregistered input channel '3438de7d mobileBRDF.Renderer/mobileBRDF.ImageProcessing.ImageProcessingActivity (server)'
02-01 13:08:00.912: W/WindowManager(632): Force-removing child win Window{d2dcab1 u0 SurfaceView} from container Window{3438de7d u0 mobileBRDF.Renderer/mobileBRDF.ImageProcessing.ImageProcessingActivity}
02-01 13:08:00.953: W/WindowManager(632): Failed looking up window
02-01 13:08:00.953: W/WindowManager(632): java.lang.IllegalArgumentException: Requested window android.os.BinderProxy#821958 does not exist
02-01 13:08:00.953: W/WindowManager(632): at com.android.server.wm.WindowManagerService.windowForClientLocked(WindowManagerService.java:8559)
02-01 13:08:00.953: W/WindowManager(632): at com.android.server.wm.WindowManagerService.windowForClientLocked(WindowManagerService.java:8550)
02-01 13:08:00.953: W/WindowManager(632): at com.android.server.wm.WindowState$DeathRecipient.binderDied(WindowState.java:1142)
02-01 13:08:00.953: W/WindowManager(632): at android.os.BinderProxy.sendDeathNotice(Binder.java:551)
02-01 13:08:00.953: I/WindowState(632): WIN DEATH: null
02-01 13:08:00.955: I/ActivityManager(632): Process com.google.android.googlequicksearchbox:interactor (pid 23335) has died
02-01 13:08:00.955: W/ActivityManager(632): Scheduling restart of crashed service com.google.android.googlequicksearchbox/com.google.android.voiceinteraction.GsaVoiceInteractionService in 942128ms
02-01 13:08:00.956: I/ActivityManager(632): Process com.nvidia.ControllerMapper (pid 22589) has died
02-01 13:08:00.956: W/ActivityManager(632): Scheduling restart of crashed service com.nvidia.ControllerMapper/.MapperService in 159324ms
02-01 13:08:00.957: I/ActivityManager(632): Process com.nvidia.stats (pid 22508) has died
02-01 13:08:00.957: W/ActivityManager(632): Scheduling restart of crashed service com.nvidia.stats/.StatsService in 169323ms
02-01 13:08:00.983: W/InputMethodManagerService(632): Session failed to close due to remote exception
02-01 13:08:00.983: W/InputMethodManagerService(632): android.os.DeadObjectException
02-01 13:08:00.983: W/InputMethodManagerService(632): at android.os.BinderProxy.transactNative(Native Method)
02-01 13:08:00.983: W/InputMethodManagerService(632): at android.os.BinderProxy.transact(Binder.java:496)
02-01 13:08:00.983: W/InputMethodManagerService(632): at com.android.internal.view.IInputMethodSession$Stub$Proxy.finishSession(IInputMethodSession.java:305)
02-01 13:08:00.983: W/InputMethodManagerService(632): at com.android.server.InputMethodManagerService.finishSessionLocked(InputMethodManagerService.java:1420)
02-01 13:08:00.983: W/InputMethodManagerService(632): at com.android.server.InputMethodManagerService.clearClientSessionLocked(InputMethodManagerService.java:1411)
02-01 13:08:00.983: W/InputMethodManagerService(632): at com.android.server.InputMethodManagerService.clearCurMethodLocked(InputMethodManagerService.java:1437)
02-01 13:08:00.983: W/InputMethodManagerService(632): at com.android.server.InputMethodManagerService.onServiceDisconnected(InputMethodManagerService.java:1456)
02-01 13:08:00.983: W/InputMethodManagerService(632): at android.app.LoadedApk$ServiceDispatcher.doDeath(LoadedApk.java:1213)
02-01 13:08:00.983: W/InputMethodManagerService(632): at android.app.LoadedApk$ServiceDispatcher$RunConnection.run(LoadedApk.java:1227)
02-01 13:08:00.983: W/InputMethodManagerService(632): at android.os.Handler.handleCallback(Handler.java:739)
02-01 13:08:00.983: W/InputMethodManagerService(632): at android.os.Handler.dispatchMessage(Handler.java:95)
02-01 13:08:00.983: W/InputMethodManagerService(632): at android.os.Looper.loop(Looper.java:135)
02-01 13:08:00.983: W/InputMethodManagerService(632): at com.android.server.SystemServer.run(SystemServer.java:269)
02-01 13:08:00.983: W/InputMethodManagerService(632): at com.android.server.SystemServer.main(SystemServer.java:170)
02-01 13:08:00.983: W/InputMethodManagerService(632): at java.lang.reflect.Method.invoke(Native Method)
02-01 13:08:00.983: W/InputMethodManagerService(632): at java.lang.reflect.Method.invoke(Method.java:372)
02-01 13:08:00.983: W/InputMethodManagerService(632): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
02-01 13:08:00.983: W/InputMethodManagerService(632): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
02-01 13:08:00.998: I/stats(632): onServiceDisconnected
02-01 13:08:00.998: I/stats(632): onServiceDisconnected
02-01 13:08:01.054: I/ActivityManager(632): Start proc 23521:android.process.media/u0a5 for service com.android.providers.media/.MtpService
02-01 13:08:01.057: I/ActivityManager(632): Process mobileBRDF.Renderer (pid 22471) has died
02-01 13:08:01.058: W/ActivityManager(632): Force removing ActivityRecord{1e7f649b u0 mobileBRDF.Renderer/mobileBRDF.HDR.EnvMapCaptureActivity t1990}: app died, no saved state
What could be the reason for this behavior?
Could it be that I've missed something during configuration? (something regarding the OpenCV manager maybe?)
Any ideas what I could do to narrow down the error?
Update:
I still haven't been able to figure out the problem on the Nvidia Shield. It just crashes somewhere inside OpenCV. Tested on 2 different Nvidia Shield devices => crashes on both. The same build + the same config runs without crashing on the Google Nexus 9 which has the same GPU (Nvidia K1). Crazy times!

MVVMCross 3.5.1 and xamarin android does not work

I have a question: is there somebody that use MVVMCross 3.5.1 with Api level android 21 and xamarin studio 5.9.3? I have a problem: I reference mvvmcross in an android app. I have a splashscreen and a firstview. When I tried to start with emulator I don't have any problem with level 15 emulator but when I tried it with the last version (Api 21) the app after splashscreen is closed without any error (not open the firstview).
Is there a solution?
UPDATE
I tried with logcat. In the following I attached the log:
W/AudioTrack( 394): AUDIO_OUTPUT_FLAG_FAST denied by client
I/ActivityManager( 394): START u0 {act=android.intent.action.MAIN cat=[android.
intent.category.LAUNCHER] flg=0x10000000 cmp=com.nowhere.nowhere/md51f5aeae0dbe3
fa3acab67292d41114d1.SplashScreen (has extras)} from uid 10007 on display 0
I/Choreographer( 824): Skipped 67 frames! The application may be doing too muc
h work on its main thread.
I/art ( 1716): Not late-enabling -Xcheck:jni (already on)
I/ActivityManager( 394): Start proc com.nowhere.nowhere for activity com.nowher
e.nowhere/md51f5aeae0dbe3fa3acab67292d41114d1.SplashScreen: pid=1716 uid=10056 g
ids={50056, 9997, 3003} abi=armeabi-v7a
I/Choreographer( 394): Skipped 32 frames! The application may be doing too muc
h work on its main thread.
F/MonoDroid( 1716): shared runtime initialization error: dlopen failed: library
"/data/app/Mono.Android.DebugRuntime-1/lib/arm/lib/libmonosgen-2.0.so" not found
I/Zygote ( 66): Process 1716 exited cleanly (1)
I/ActivityManager( 394): Process com.nowhere.nowhere (pid 1716) has died
I/art ( 1731): Not late-enabling -Xcheck:jni (already on)
I/ActivityManager( 394): Start proc com.nowhere.nowhere for activity com.nowher
e.nowhere/md51f5aeae0dbe3fa3acab67292d41114d1.SplashScreen: pid=1731 uid=10056 g
ids={50056, 9997, 3003} abi=armeabi-v7a
F/MonoDroid( 1731): shared runtime initialization error: dlopen failed: library
"/data/app/Mono.Android.DebugRuntime-1/lib/arm/lib/libmonosgen-2.0.so" not found
I/Zygote ( 66): Process 1731 exited cleanly (1)
I/ActivityManager( 394): Process com.nowhere.nowhere (pid 1731) has died
I/art ( 1746): Not late-enabling -Xcheck:jni (already on)
I/ActivityManager( 394): Start proc com.nowhere.nowhere for activity com.nowher
e.nowhere/md51f5aeae0dbe3fa3acab67292d41114d1.SplashScreen: pid=1746 uid=10056 g
ids={50056, 9997, 3003} abi=armeabi-v7a
F/MonoDroid( 1746): shared runtime initialization error: dlopen failed: library
"/data/app/Mono.Android.DebugRuntime-1/lib/arm/lib/libmonosgen-2.0.so" not found
I/Zygote ( 66): Process 1746 exited cleanly (1)
I/ActivityManager( 394): Process com.nowhere.nowhere (pid 1746) has died
W/ActivityManager( 394): Force removing ActivityRecord{27f513c9 u0 com.nowhere.
nowhere/md51f5aeae0dbe3fa3acab67292d41114d1.SplashScreen t8}: app died, no saved
state
W/WindowManager( 394): Failed looking up window
W/WindowManager( 394): java.lang.IllegalArgumentException: Requested window and
roid.view.ViewRootImpl$W#3c7a1def does not exist
W/WindowManager( 394): at com.android.server.wm.WindowManagerService.wi
ndowForClientLocked(WindowManagerService.java:8412)
W/WindowManager( 394): at com.android.server.wm.WindowManagerService.wi
ndowForClientLocked(WindowManagerService.java:8403)
W/WindowManager( 394): at com.android.server.wm.WindowManagerService.re
moveWindow(WindowManagerService.java:2558)
W/WindowManager( 394): at com.android.server.wm.Session.remove(Session.
java:186)
W/WindowManager( 394): at android.view.ViewRootImpl.dispatchDetachedFro
mWindow(ViewRootImpl.java:2920)
W/WindowManager( 394): at android.view.ViewRootImpl.doDie(ViewRootImpl.
java:5390)
W/WindowManager( 394): at android.view.ViewRootImpl$ViewRootHandler.han
dleMessage(ViewRootImpl.java:3223)
W/WindowManager( 394): at android.os.Handler.dispatchMessage(Handler.ja
va:102)
W/WindowManager( 394): at android.os.Looper.loop(Looper.java:135)
W/WindowManager( 394): at android.os.HandlerThread.run(HandlerThread.ja
va:61)
W/WindowManager( 394): at com.android.server.ServiceThread.run(ServiceT
hread.java:46)
W/InputMethodManagerService( 394): Window already focused, ignoring focus gain
of: com.android.internal.view.IInputMethodClient$Stub$Proxy#14f4aa0b attribute=n
ull, token = android.os.BinderProxy#5c9e508
I/Choreographer( 824): Skipped 56 frames! The application may be doing too muc
h work on its main thread.
D/TaskPersister( 394): removeObsoleteFile: deleting file=8_task.xml
UPDATE 2
The bind does not work. Inside the view..
UPDATE 3
I put the code in this repo:
https://onedrive.live.com/redir?resid=1E563B1D1AD8A1C!15847&authkey=!AII01sfuzToQiUQ&ithint=file%2czip
I used this configuration for the test:
1. Nexus 5,
2. Android 5.0-API Level 21,
3. CPU/ABI, I have chosen Google APIs Intel Atom(x86_64),
4. Use Host GPU.
UPDATE 4
new link for code: http://1drv.ms/1MZWf45
Thanks
Alessandro

I found the problem. The problem was the emulator. I tried to change the configuration and now run without problem.
Thanks
Al.

Using WeakSubscribe from MvvmCross

I need to subscribe to INotifyPropertyChanged of one of my models in my ViewModel. My research led me to: How do I update the parent viewmodel when child viewmodel is updated.
I tried using WeakSubscribe as suggested in #3 but after entering and leaving the view several times my whole application either freezes or crashes.
Here's my code from Init() in the ViewModel:
foreach (var sale in Model.Sales)
{
sale.WeakSubscribe(delegate
{
Model.CalculateSalesTotals();
});
}
when the app is crashing, I'm getting SIGSEGV:
I/mono-stdout(30334): mvx:Diagnostic:227.00 Showing ViewModel InvoiceAuthorizationViewModel
I/ActivityManager( 391): START u0 {flg=0x10000000 cmp=com.desco.escMobile/escmobile.android.views.InvoiceAuthorizationView (has extras)} from pid 30334
I/mono-stdout(30334): mvx:Diagnostic:227.19 Loading new ViewModel from Intent with Extras
D/dalvikvm(30334): GC_EXPLICIT freed 783K, 5% free 17252K/18068K, paused 2ms+8ms, total 53ms
I/mono-stdout(30334): MvxBind:Warning:227.59 Unable to bind: source property source not found Cirrious.MvvmCross.Binding.Parse.PropertyPath.PropertyTokens.MvxPr
opertyNamePropertyToken on null-object
I/mono-stdout(30334): MvxBind:Warning:227.61 Unable to bind: source property source not found Cirrious.MvvmCross.Binding.Parse.PropertyPath.PropertyTokens.MvxPr
opertyNamePropertyToken on null-object
I/mono-stdout(30334): MvxBind:Warning:227.63 Unable to bind: source property source not found Cirrious.MvvmCross.Binding.Parse.PropertyPath.PropertyTokens.MvxPr
opertyNamePropertyToken on null-object
I/dalvikvm(30334): Jit: resizing JitTable from 4096 to 8192
I/ActivityManager( 391): Displayed com.desco.escMobile/escmobile.android.views.InvoiceAuthorizationView: +755ms (total +1s259ms)
I/ActivityManager( 391): Displayed com.desco.escMobile/escmobile.android.views.InvoiceAuthorizationView: +1s279ms
I/ActivityManager( 391): Process com.android.vending (pid 30179) has died.
E/mono-rt (30334): Stacktrace:
E/mono-rt (30334):
E/mono-rt (30334):
E/mono-rt (30334): =================================================================
E/mono-rt (30334): Got a SIGSEGV while executing native code. This usually indicates
E/mono-rt (30334): a fatal error in the mono runtime or one of the native libraries
E/mono-rt (30334): used by your application.
E/mono-rt (30334): =================================================================
E/mono-rt (30334):
I/ActivityManager( 391): Process com.desco.escMobile (pid 30334) has died.
I/WindowState( 391): WIN DEATH: Window{42cf2e60 u0 com.desco.escMobile/escmobile.android.views.InvoiceAuthorizationView}
W/ActivityManager( 391): Force removing ActivityRecord{42e05b20 u0 com.desco.escMobile/escmobile.android.views.InvoiceAuthorizationView}: app died, no saved st
ate
I/WindowState( 391): WIN DEATH: Window{427bfbf0 u0 com.desco.escMobile/escmobile.android.views.DispatchListView}
I/WindowState( 391): WIN DEATH: Window{42b32b50 u0 com.desco.escMobile/escmobile.android.views.InvoiceDetailsView}
I/WindowState( 391): WIN DEATH: Window{43003e48 u0 com.desco.escMobile/escmobile.android.views.InvoiceAuthorizationView}
I/WindowState( 391): WIN DEATH: Window{42aea920 u0 com.desco.escMobile/escmobile.android.views.DispatchDetailsView}
D/dalvikvm(30434): Late-enabling CheckJNI
I/ActivityManager( 391): Start proc com.desco.escMobile for activity com.desco.escMobile/escmobile.android.views.InvoiceAuthorizationView: pid=30434 uid=10086
gids={50086, 3003, 1015, 1028}
D/Zygote ( 129): Process 30334 exited cleanly (255)
Any suggestions?

Application dies with "Low Memory: No more background processes."

In my application i try launching the browser with the following url:
https://maps.google.com/maps?saddr=indiranagar bangalore&daddr=mgroad bangalore
The browser launches and when the map loads my application gets killed with the following logcat message:
I/ActivityManager( 61): Starting: Intent { act=android.intent.action.VIEW dat=
http://View cmp=com.android.browser/.BrowserActivity (has extras) } from pid 355
I/ActivityManager( 61): Starting: Intent { act=android.intent.action.VIEW dat=
https://maps.google.com/maps?saddr=indiranagar bangalore&daddr=mgroad bangalore
cmp=com.android.browser/.BrowserActivity } from pid 355
D/PhoneWindow( 355): couldn't save which view has focus because the focused vie
w android.widget.EditText#40587640 has no id.
I/ActivityManager( 61): Displayed com.android.browser/.BrowserActivity: +760ms
W/IInputConnectionWrapper( 355): showStatusIcon on inactive InputConnection
I/dalvikvm( 373): Jit: resizing JitTable from 1024 to 2048
I/System.out( 355): Logout Counter:30
D/dalvikvm( 373): GC_CONCURRENT freed 369K, 50% free 3921K/7751K, external 2234
K/2645K, paused 5ms+18ms
D/dalvikvm( 355): GC_EXPLICIT freed 866K, 50% free 3666K/7239K, external 2693K/
3310K, paused 1640ms
D/dalvikvm( 373): GC_CONCURRENT freed 1400K, 54% free 3641K/7751K, external 226
6K/2645K, paused 6ms+26ms
W/browser ( 373): We should not show context menu when nothing is touched
W/browser ( 373): We should not show context menu when nothing is touched
W/browser ( 373): We should not show context menu when nothing is touched
**I/ActivityManager( 61): Process com.aavarp.mobile (pid 355) has died.
I/ActivityManager( 61): Low Memory: No more background processes.**
I/WindowManager( 61): WIN DEATH: Window{408793c0 com.aavarp.mobile/com.aavarp.
mobile.core.ui.ApplicationsActivity paused=false}
E/InputDispatcher( 61): channel '4070e4f8 com.aavarp.mobile/com.aavarp.mobile.
dashboard.ui.components.GraphActivity (server)' ~ Consumer closed input channel
or an error occurred. events=0x8
E/InputDispatcher( 61): channel '4070e4f8 com.aavarp.mobile/com.aavarp.mobile.
dashboard.ui.components.GraphActivity (server)' ~ Channel is unrecoverably broke
n and will be disposed!
I/WindowManager( 61): WIN DEATH: Window{4070e4f8 com.aavarp.mobile/com.aavarp.
mobile.dashboard.ui.components.GraphActivity paused=false}
I/WindowManager( 61): WIN DEATH: Window{406836a8 com.aavarp.mobile/com.aavarp.
mobile.dashboard.ui.components.NotificationList paused=false}
I/WindowManager( 61): WIN DEATH: Window{406825a8 com.aavarp.mobile/com.aavarp.
mobile.dashboard.ui.components.TableListActivity paused=false}
I/WindowManager( 61): WIN DEATH: Window{4083df30 com.aavarp.mobile/com.aavarp.
mobile.dashboard.ui.components.DetailsActivity paused=false}
E/InputDispatcher( 61): Received spurious receive callback for unknown input c
hannel. fd=171, events=0x8
E/InputDispatcher( 61): Received spurious receive callback for unknown input c
hannel. fd=175, events=0x8
E/InputDispatcher( 61): Received spurious receive callback for unknown input c
hannel. fd=181, events=0x8
D/dalvikvm( 61): GC_CONCURRENT freed 1735K, 52% free 4435K/9159K, external 529
2K/6609K, paused 8ms+16ms
D/skia ( 129): purging 38K from font cache [5 entries]
D/dalvikvm( 129): GC_EXPLICIT freed 84K, 52% free 2801K/5767K, external 2117K/2
643K, paused 73ms
Again i tried launching the browser from my application with www.google.com and performed a search and browsed through various pages and navigated back to my application without any issues. I am not sure if am missing some message on the logcat. I use Android 2.3 OS.Could someone kindly help me resolve this issue please. Thanks in advance.

why do you want to load the maps in webview..? you load the map in a map activity or
use Intents List: Invoking Google Applications on Android Devices
String uri = "http://maps.google.com/maps?saddr=" + "9982878"+","+"76285774"+"&daddr="+"9992084"+","+"76286455";
Intent intent = new Intent(android.content.Intent.ACTION_VIEW, Uri.parse(uri));
intent.setClassName("com.google.android.apps.maps", "com.google.android.maps.MapsActivity");
startActivity(intent);
Note: for displaying route you should use map activity canvas

Process has died

In my app i am downloading images from the web. Sometimes i am getting the following error in stack trace and then app crashed. What is meaning of the "process has died"? How to handle this?
ERROR
09-06 11:03:46.127 I/ActivityManager( 98): Process com.ibkr.elgifto (pid 7684) has died.
09-06 11:03:46.157 I/WindowManager( 98): WIN DEATH: Window{44b0e778 com.ibkr.elgifto/com.ibkr.elgifto.ElgiftoSplash paused=false}
09-06 11:03:46.167 I/WindowManager( 98): WIN DEATH: Window{44b4e400 com.ibkr.elgifto/com.ibkr.elgifto.Ehome paused=false}
09-06 11:03:46.207 I/ActivityManager( 98): Start proc com.ibkr.elgifto for activity com.ibkr.elgifto/.ElgiftoSplash: pid=8011 uid=10060 gids={3003, 1015}
09-06 11:03:46.487 I/UsageStats( 98): Unexpected resume of com.ibkr.elgifto while already resumed in com.ibkr.elgifto
09-06 11:04:16.687 W/InputManagerService( 98): Got RemoteException sending 'screen on/off' notification to pid 7684 uid 10060

By the stack trace I underatand that your app is resumed while its already running. Wich causes your process to be killed and start again.
Check to see if you are downloading the image on the main thread. If u do that might be the problem.

The way you handle this through handlers and background service and different threads.
Make sure that you dont do any network operations in UI thread