Comments (11)
rebeccaXam
commented on July 21, 2024
1
In version 1.1.0 I removed 'the async stuff'. Thanks for helping me find this problem ;)
Unfortunately I do not always have time to work on this project, sorry for the late response.
from xamforms.controls.calendar.
rebeccaXam
commented on July 21, 2024
Could you try version 1.0.8 to see if the problem is still there?
It is weird because get_DatesFontSize is a double and has a default value and therefore can not be null.
from xamforms.controls.calendar.
Dids
commented on July 21, 2024
@rebeccaXam Thank you so much, no crashes so far! :)
I'll keep an eye on it, and should know for certain within a day or so.
from xamforms.controls.calendar.
Dids
commented on July 21, 2024
Still getting this, unfortunately. From what I can tell, it doesn't seem to occur nearly as often now though.
from xamforms.controls.calendar.
pradeeparutla
commented on July 21, 2024
In the calendar control codebase, for filling calendar control, below code is used:
if (Device.OS == TargetPlatform.Windows || Device.OS == TargetPlatform.WinPhone)
{
FillCalendarWindows();
}
else
{
// iOS and Android can create controls on another thread when they are not attached to the main ui yet,
// windows can not
await FillCalendar();
}
protected Task FillCalendar()
{
return Task.Factory.StartNew(() =>
{
FillCalendarWindows();
});
}
What i have observed is, while executing the statement, return Task.Factory.StartNew(() =>
{
FillCalendarWindows();
});
calendar control is crashing randomly.
So, in the first statement, irrespective of platform if we call FillCalendarWindows();(Skipping FillCalendar() method call) is fixing the issue. But I do not know whether it is the right fix for the issue or not.
from xamforms.controls.calendar.
Dids
commented on July 21, 2024
Looks like this is now happening in a production application (on a device) too. :(
from xamforms.controls.calendar.
Dids
commented on July 21, 2024
Slightly different crash, but still a null binding issue:
Application Specific Information:
*** Terminating app due to uncaught exception 'System.NullReferenceException', reason: 'System.NullReferenceException: Object reference not set to an instance of an object'
Xamarin Exception Stack:
at Xamarin.Forms.BindableObject.GetContext (Xamarin.Forms.BindableProperty property) <0x100302e90 + 0x0003c> in <59b03de64f0e485e8c9d8ead0b747e17#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at Xamarin.Forms.BindableObject.GetValue (Xamarin.Forms.BindableProperty property) <0x100301540 + 0x0002f> in <59b03de64f0e485e8c9d8ead0b747e17#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at XamForms.Controls.Calendar.get_WeekdaysTextColor () <0x100e63b10 + 0x00027> in <5c64a4f9c5354185bb66037f727faf04#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at XamForms.Controls.Calendar.ShowHideElements () <0x100e66fc0 + 0x007b3> in <5c64a4f9c5354185bb66037f727faf04#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at XamForms.Controls.Calendar.FillCalendarWindows () <0x100e60ad0 + 0x00023> in <5c64a4f9c5354185bb66037f727faf04#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at XamForms.Controls.Calendar.<FillCalendar>m__3 () <0x100e6f770 + 0x00013> in <5c64a4f9c5354185bb66037f727faf04#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at System.Threading.Tasks.Task.InnerInvoke () <0x10059af10 + 0x0005f> in <54e129cad3ee4c61a6b46c3680ddc69a#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at System.Threading.Tasks.Task.Execute () <0x10059a740 + 0x00043> in <54e129cad3ee4c61a6b46c3680ddc69a#2fefd57775e65d7a0dcd9cef89ef65e0>:0
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () <0x10052f020 + 0x00028> in <54e129cad3ee4c61a6b46c3680ddc69a#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) <0x10052e4c0 + 0x000d3> in <54e129cad3ee4c61a6b46c3680ddc69a#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) <0x10052e410 + 0x0008b> in <54e129cad3ee4c61a6b46c3680ddc69a#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) <0x10052e3b0 + 0x00047> in <54e129cad3ee4c61a6b46c3680ddc69a#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at System.Runtime.CompilerServices.TaskAwaiter.GetResult () <0x10052e380 + 0x00017> in <54e129cad3ee4c61a6b46c3680ddc69a#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at XamForms.Controls.Calendar+<OnParentSet>c__async0.MoveNext () <0x100e771a0 + 0x0017f> in <5c64a4f9c5354185bb66037f727faf04#2fefd57775e65d7a0dcd9cef89ef65e0>:0
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () <0x10052f020 + 0x00028> in <54e129cad3ee4c61a6b46c3680ddc69a#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<ThrowAsync>m__0 (System.Object state) <0x10052dad0 + 0x0004f> in <54e129cad3ee4c61a6b46c3680ddc69a#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at UIKit.UIKitSynchronizationContext+<Post>c__AnonStorey0.<>m__0 () <0x100c71b10 + 0x00027> in <cc077ba5ca594b7b8b31455dce914ca4#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at Foundation.NSAsyncActionDispatcher.Apply () <0x100c5e5b0 + 0x00023> in <cc077ba5ca594b7b8b31455dce914ca4#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at (wrapper managed-to-native) UIKit.UIApplication:UIApplicationMain (int,string[],intptr,intptr)
at UIKit.UIApplication.Main (System.String[] args, System.IntPtr principal, System.IntPtr delegate) <0x100c6ad10 + 0x0002b> in <cc077ba5ca594b7b8b31455dce914ca4#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) <0x100c6ac50 + 0x000ab> in <cc077ba5ca594b7b8b31455dce914ca4#2fefd57775e65d7a0dcd9cef89ef65e0>:0
at App.iOS.Application.Main (System.String[] args) <0x1002a4330 + 0x00023> in <b1362e227fb24e00a3c402c3f854ba58#2fefd57775e65d7a0dcd9cef89ef65e0>:0
from xamforms.controls.calendar.
Dids
commented on July 21, 2024
@rebeccaXam This is also happening on Android, and getting more frequent for some reason.
Here's an Android specific exception:
Xamarin caused by: android.runtime.JavaProxyThrowable: System.NullReferenceException: Object reference not set to an instance of an object.
at Xamarin.Forms.BindableObject.GetContext (Xamarin.Forms.BindableProperty property) [0x00013] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Core\BindableObject.cs:489
at Xamarin.Forms.BindableObject.GetValue (Xamarin.Forms.BindableProperty property) [0x0000e] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Core\BindableObject.cs:54
at XamForms.Controls.Calendar.get_DatesFontAttributes () [0x00000] in <5c64a4f9c5354185bb66037f727faf04>:0
at XamForms.Controls.Calendar.CreateButtons () [0x001ac] in <5c64a4f9c5354185bb66037f727faf04>:0
at XamForms.Controls.Calendar.FillCalendarWindows () [0x00006] in <5c64a4f9c5354185bb66037f727faf04>:0
at XamForms.Controls.Calendar.<FillCalendar>m__3 () [0x00000] in <5c64a4f9c5354185bb66037f727faf04>:0
at System.Threading.Tasks.Task.InnerInvoke () [0x00012] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Task.cs:2879
at System.Threading.Tasks.Task.Execute () [0x00016] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Task.cs:2502
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:143
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00047] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:187
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x0002e] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:156
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x0000b] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:128
at System.Runtime.CompilerServices.TaskAwaiter.GetResult () [0x00000] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:113
at XamForms.Controls.Calendar+<OnParentSet>c__async0.MoveNext () [0x0008b] in <5c64a4f9c5354185bb66037f727faf04>:0
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:143
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<ThrowAsync>m__0 (System.Object state) [0x00000] in /Users/builder/data/lanes/4009/f3074d2c/source/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1018
at Android.App.SyncContext+<Post>c__AnonStorey0.<>m__0 () [0x00000] in /Users/builder/data/lanes/4009/9578cdcd/source/xamarin-android/src/Mono.Android/Android.App/SyncContext.cs:35
at Java.Lang.Thread+RunnableImplementor.Run () [0x0000b] in /Users/builder/data/lanes/4009/9578cdcd/source/xamarin-android/src/Mono.Android/Java.Lang/Thread.cs:36
at Java.Lang.IRunnableInvoker.n_Run (System.IntPtr jnienv, System.IntPtr native__this) [0x00009] in /Users/builder/data/lanes/4009/9578cdcd/source/monodroid/src/Mono.Android/platforms/android-24/src/generated/Java.Lang.IRunnable.cs:81
at (wrapper dynamic-method) System.Object:5ce9d441-22be-4d66-a7da-c83cd4ebbf94 (intptr,intptr)
at mono.java.lang.RunnableImplementor.n_run(Native Method)
at mono.java.lang.RunnableImplementor.run(RunnableImplementor.java:30)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
from xamforms.controls.calendar.
Dids
commented on July 21, 2024
@rebeccaXam Sorry to keep pinging you, but the crashing at startup is getting out of hand at the moment. :(
from xamforms.controls.calendar.
Dids
commented on July 21, 2024
@rebeccaXam The fix by @pradeeparutla works 100%. Simply get rid of the async stuff for FillCalendar() and it works.
from xamforms.controls.calendar.
Dids
commented on July 21, 2024
Thank you. :)
from xamforms.controls.calendar.
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from xamforms.controls.calendar.