when using steema Teechart, its working fine in simulator, but application crashing when using in iphone,
its shows following error
System.NullReferenceException: Object reference not set to an instance of an object
at Steema.TeeChart.TChart.ApplyScroll () [0x00000] in :0
at Steema.TeeChart.TChart.m__0 (System.Object sender, System.EventArgs e) [0x00000] in :0
at MonoTouch.UIKit.UIScrollView+_UIScrollViewDelegate.Scrolled (MonoTouch.UIKit.UIScrollView scrollView) [0x0000d] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIScrollView.g.cs:991
at MonoTouch.UIKit.UIScrollView.SetContentOffset (PointF contentOffset, Boolean animated) [0x00010] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIScrollView.g.cs:208
at Steema.TeeChart.TChart.Draw (RectangleF rect) [0x00000] in :0
at MonoTouch.UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x0004c] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:38
at CropManageriPhone.Application.Main (System.String[] args) [0x00000] in /Users/vss1/VSS Projects/CP Live/CropManageriPhone04022013/CropManageriPhone/Main.cs:17
and We are using monotouch version 6.0.4
i found solution for this,
i set ZoomScrollStyle for the chart control,
_controller.chart.Aspect.ZoomScrollStyle=Steema.TeeChart.Drawing.Aspect.ZoomScrollStyles.Manual;
Related
After update from mvvmcross 4.4.0 to 5.0.5 method ShowViewModel<SettingsViewModel>(); throws System.InvalidCastException. Output is:
mvx:Diagnostic:121.13 Showing ViewModel SettingsViewModel
iOSNavigation:Diagnostic:121.13 Navigate requested
mvx:Diagnostic:121.16 PresentationAttribute not found for SettingsViewController. Assuming animated Child presentation
and a StackTrace :
at MvvmCross.iOS.Views.MvxTabBarViewController.ShowChildView (UIKit.UIViewController viewController) [0x00007] in <091ad1c63ffa448eb48cc38964d45708>:0
at MvvmCross.iOS.Views.Presenters.MvxIosViewPresenter.ShowChildViewController (UIKit.UIViewController viewController, MvvmCross.iOS.Views.Presenters.Attributes.MvxChildPresentationAttribute attribute, MvvmCross.Core.ViewModels.MvxViewModelRequest request) [0x0004a] in <091ad1c63ffa448eb48cc38964d45708>:0
at MvvmCross.iOS.Views.Presenters.MvxIosViewPresenter.<RegisterAttributeTypes>b__20_1 (UIKit.UIViewController vc, MvvmCross.iOS.Views.Presenters.Attributes.MvxBasePresentationAttribute attribute, MvvmCross.Core.ViewModels.MvxViewModelRequest request) [0x00000] in <091ad1c63ffa448eb48cc38964d45708>:0
at MvvmCross.iOS.Views.Presenters.MvxIosViewPresenter.Show (MvvmCross.iOS.Views.IMvxIosView view, MvvmCross.Core.ViewModels.MvxViewModelRequest request) [0x0002c] in <091ad1c63ffa448eb48cc38964d45708>:0
at MvvmCross.iOS.Views.Presenters.MvxIosViewPresenter.Show (MvvmCross.Core.ViewModels.MvxViewModelRequest request) [0x00009] in <091ad1c63ffa448eb48cc38964d45708>:0
at MvvmCross.iOS.Views.MvxIosViewDispatcher+<>c__DisplayClass2_0.<ShowViewModel>b__0 () [0x00016] in <091ad1c63ffa448eb48cc38964d45708>:0
at MvvmCross.iOS.Views.MvxIosUIThreadDispatcher.RequestMainThreadAction (System.Action action) [0x0001f] in <091ad1c63ffa448eb48cc38964d45708>:0
at MvvmCross.iOS.Views.MvxIosViewDispatcher.ShowViewModel (MvvmCross.Core.ViewModels.MvxViewModelRequest request) [0x00022] in <091ad1c63ffa448eb48cc38964d45708>:0
at MvvmCross.Core.ViewModels.MvxNavigatingObject.ShowViewModelImpl (System.Type viewModelType, MvvmCross.Core.ViewModels.IMvxBundle parameterBundle, MvvmCross.Core.ViewModels.IMvxBundle presentationBundle) [0x0002c] in <ed129c02df414c1d8cea008ca80d94cb>:0
at MvvmCross.Core.ViewModels.MvxNavigatingObject.ShowViewModel (System.Type viewModelType, MvvmCross.Core.ViewModels.IMvxBundle parameterBundle, MvvmCross.Core.ViewModels.IMvxBundle presentationBundle) [0x00000] in <ed129c02df414c1d8cea008ca80d94cb>:0
at MvvmCross.Core.ViewModels.MvxNavigatingObject.ShowViewModel[TViewModel] (MvvmCross.Core.ViewModels.IMvxBundle parameterBundle, MvvmCross.Core.ViewModels.IMvxBundle presentationBundle) [0x00000] in <ed129c02df414c1d8cea008ca80d94cb>:0
at FreQuest.ViewModels.Tabs.MyProfileViewModel.<get_SettingsCommand>b__35_0 () [0x00001] in /Users/pavlomelnyk/frequest-ios-xamarin/FreQuest/ViewModels/Tabs/MyProfileViewModel.cs:114
at MvvmCross.Core.ViewModels.MvxCommand.Execute (System.Object parameter) [0x00009] in <ed129c02df414c1d8cea008ca80d94cb>:0
at MvvmCross.Binding.iOS.Target.MvxUIControlTargetBinding.ControlEvent (System.Object sender, System.EventArgs eventArgs) [0x00025] in <78be62c59fd541e38ea9b95c6cd03bdc>:0
at UIKit.UIControlEventProxy.Activated () [0x00007] in /Users/builder/data/lanes/4691/d2270eec/source/xamarin-macios/src/UIKit/UIControl.cs:38
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) [0x00005] in /Users/builder/data/lanes/4691/d2270eec/source/xamarin-macios/src/UIKit/UIApplication.cs:79
at UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x00038] in /Users/builder/data/lanes/4691/d2270eec/source/xamarin-macios/src/UIKit/UIApplication.cs:63
at FreQuest.iOS.Application.Main (System.String[] args) [0x00001] in /Users/pavlomelnyk/frequest-ios-xamarin/iOS/Main.cs:17
I invoke ShowViewModel<SettingsViewModel>(); in MyProfileViewModel that is in UITabBarController that extends MvxTabBarViewController. My guess is somehow ViewModels related to TabBarContreller do not "see" SettingsViewController.
Has somebody face same issue? Your feedback will be very helpful.
Thanks
We are using data binding in our Xamarin.IOS project using MvvmCross(Hot Tuna version) as specified in the sample app “N-39-CrossLight-Touch”.
The sample app as well as our project works fine on simulator(IOS7) but on device(IOS7) it throws the below exception while binding.
System.ArgumentNullException: missing source event info in
MvxWeakEventSubscription Parameter name: sourceEventInfo at
Cirrious.CrossCore.WeakSubscription.MvxWeakEventSubscription2[System.ComponentModel.INotifyPropertyChanged,System.ComponentModel.PropertyChangedEventArgs]..ctor
(INotifyPropertyChanged source, System.Reflection.EventInfo
sourceEventInfo, System.EventHandler1 targetEventHandler) [0x00000] in
:0 at
Cirrious.CrossCore.WeakSubscription.MvxNotifyPropertyChangedEventSubscription..ctor
(INotifyPropertyChanged source, System.EventHandler1
targetEventHandler) [0x00000] in :0 at
Cirrious.CrossCore.WeakSubscription.MvxWeakSubscriptionExtensionMethods.WeakSubscribe
(INotifyPropertyChanged source, System.EventHandler1 eventHandler)
[0x00000] in :0 at
Cirrious.MvvmCross.Binding.Bindings.Source.MvxPropertyInfoSourceBinding..ctor
(System.Object source, System.Reflection.PropertyInfo propertyInfo)
[0x00000] in :0 at
Cirrious.MvvmCross.Binding.Bindings.Source.Leaf.MvxLeafPropertyInfoSourceBinding..ctor
(System.Object source, System.Reflection.PropertyInfo propertyInfo)
[0x00000] in :0 at
Cirrious.MvvmCross.Binding.Bindings.Source.Leaf.MvxSimpleLeafPropertyInfoSourceBinding..ctor
(System.Object source, System.Reflection.PropertyInfo propertyInfo)
[0x00000] in :0 at
Cirrious.MvvmCross.Binding.Bindings.Source.Construction.MvxPropertySourceBindingFactoryExtension.CreateLeafBinding
(System.Object source,
Cirrious.MvvmCross.Binding.Parse.PropertyPath.PropertyTokens.MvxPropertyToken
propertyToken) [0x00000] in :0 at
Cirrious.MvvmCross.Binding.Bindings.Source.Construction.MvxPropertySourceBindingFactoryExtension.TryCreateBinding
(System.Object source,
Cirrious.MvvmCross.Binding.Parse.PropertyPath.PropertyTokens.MvxPropertyToken
currentToken, System.Collections.Generic.List1 remainingTokens,
IMvxSourceBinding& result) [0x00000] in :0 at
Cirrious.MvvmCross.Binding.Bindings.Source.Construction.MvxSourceBindingFactory.TryCreateBindingFromExtensions
(System.Object source,
Cirrious.MvvmCross.Binding.Parse.PropertyPath.PropertyTokens.MvxPropertyToken
propertyToken, System.Collections.Generic.List1 remainingTokens,
IMvxSourceBinding& result) [0x00000] in :0 at
Cirrious.MvvmCross.Binding.Bindings.Source.Construction.MvxSourceBindingFactory.CreateBinding
(System.Object source, IList1 tokens) [0x00000] in :0 at
Cirrious.MvvmCross.Binding.Bindings.Source.Construction.MvxSourceBindingFactory.CreateBinding
(System.Object source, System.String combinedPropertyName) [0x00000]
in :0 at
Cirrious.MvvmCross.Binding.Bindings.SourceSteps.MvxPathSourceStep.OnDataContextChanged
() [0x00000] in :0 at
Cirrious.MvvmCross.Binding.Bindings.SourceSteps.MvxSourceStep.set_DataContext
(System.Object value) [0x00000] in :0 at
Cirrious.MvvmCross.Binding.Bindings.MvxFullBinding.CreateSourceBinding
(System.Object source) [0x00000] in :0 at
Cirrious.MvvmCross.Binding.Bindings.MvxFullBinding..ctor
(Cirrious.MvvmCross.Binding.MvxBindingRequest bindingRequest)
[0x00000] in :0 at
Cirrious.MvvmCross.Binding.Binders.MvxFromTextBinder.BindSingle
(Cirrious.MvvmCross.Binding.MvxBindingRequest bindingRequest)
[0x00000] in :0 at
Cirrious.MvvmCross.Binding.Binders.MvxFromTextBinder+<>c_DisplayClass1.b_0
(Cirrious.MvvmCross.Binding.Bindings.MvxBindingDescription
description) [0x00000] in :0 at
System.Linq.Enumerable+c__Iterator102[Cirrious.MvvmCross.Binding.Bindings.MvxBindingDescription,Cirrious.MvvmCross.Binding.Bindings.IMvxUpdateableBinding].MoveNext
() [0x00000] in :0 at
Cirrious.MvvmCross.Binding.BindingContext.MvxBindingContextOwnerExtensions.AddBindings
(IMvxBindingContextOwner view, IEnumerable1 bindings, System.Object
clearKey) [0x00000] in :0 at
Cirrious.MvvmCross.Binding.BindingContext.MvxBindingContextOwnerExtensions.AddBindings
(IMvxBindingContextOwner view, System.Object target, IEnumerable1
bindingDescriptions, System.Object clearKey) [0x00000] in :0 at
Cirrious.MvvmCross.Binding.BindingContext.MvxBindingContextOwnerExtensions.AddBinding
(IMvxBindingContextOwner view, System.Object target,
Cirrious.MvvmCross.Binding.Bindings.MvxBindingDescription
bindingDescription, System.Object clearKey) [0x00000] in :0 at
Cirrious.MvvmCross.Binding.BindingContext.MvxBaseFluentBindingDescription1[MonoTouch.UIKit.UITextField].Apply
() [0x00000] in :0 at
Cirrious.MvvmCross.Binding.BindingContext.MvxFluentBindingDescriptionSet2[CrossLightTouch.MyViewController,CrossLightTouch.ViewModels.MyViewModel].Apply
() [0x00000] in :0 at CrossLightTouch.MyViewController.ViewDidLoad ()
[0x0024f] in
/Users/admin/Downloads/N-39-CrossLight-Touch/CrossLightTouch/MyViewController.cs:81
at at (wrapper managed-to-native)
MonoTouch.ObjCRuntime.Messaging:void_objc_msgSend (intptr,intptr) at
MonoTouch.UIKit.UIWindow.MakeKeyAndVisible () [0x00008] in
/Developer/MonoTouch/Source/monotouch/src/UIKit/.pp-UIWindow.g.cs:129
at CrossLightTouch.AppDelegate.FinishedLaunching
(MonoTouch.UIKit.UIApplication app, MonoTouch.Foundation.NSDictionary
options) [0x00042] in
/Users/admin/Downloads/N-39-CrossLight-Touch/CrossLightTouch/AppDelegate.cs:25
at at (wrapper managed-to-native)
MonoTouch.UIKit.UIApplication:UIApplicationMain
(int,string[],intptr,intptr) at MonoTouch.UIKit.UIApplication.Main
(System.String[] args, System.String principalClassName, System.String
delegateClassName) [0x0004c] in
/Developer/MonoTouch/Source/monotouch/src/UIKit/.pp-UIApplication.cs:38
at CrossLightTouch.Application.Main (System.String[] args) [0x00008]
in
/Users/admin/Downloads/N-39-CrossLight-Touch/CrossLightTouch/Main.cs:17
By setting the IOS build options -> Link Behavior -> Don’t link , it works on device as expected, but the binary size has been doubled.
You can reproduce this issue with “N-39-CrossLight-Touch” sample.
Is there a fix or alternative for this?
If you don't already have a LinkerPleaseInclude file, copy the one from here into your project:
https://github.com/MvvmCross/MvvmCross/blob/6ab1baa9ca128921208efa994890039edf398474/TestProjects/Android-Support/Fragments/Example.Droid/LinkerPleaseInclude.cs
Also, add the following line to the Include(TextView text) method:
text.AfterTextChanged += (sender, args) => text.Text = "" + text.Text;
If that doesn't solve it, look for other events that may be used in the Mvx bindings and add those to the LinkerPleaseInclude file.
This issue is caused by the dynamic nature of Mvx binding on Android. Because the bindings are resolved at runtime, the Xamarin linker thinks the UI events they reference are not being used so they are removed from the final build. Adding references in the LinkerPleaseInclude file forces them to be included.
When I run app with or without Degugging it give me an error as below
**Unhandled Exception: System.ExecutionEngineException: SIGILL
at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication:UIApplicationMain (int,string[],intptr,intptr)
at MonoTouch.UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x00042] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:29
at DicomViewerApplication.Application.Main (System.String[] args) [0x00000] in /Developer/Medsynaptic/DicomViewerApplication/DicomViewerApplication/Main.cs:18
[ERROR] FATAL UNHANDLED EXCEPTION: System.ExecutionEngineException: SIGILL
at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication:UIApplicationMain (int,string[],intptr,intptr)
at MonoTouch.UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x00042] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:29
at DicomViewerApplication.Application.Main (System.String[] args) [0x00000] in /Developer/Medsynaptic/DicomViewerApplication/DicomViewerApplication/Main.cs:18 **
but when I run the app from simulator it works properly I want to check the values that come with debugger but it give me an error
This question is likely solved in the latest version of Xamarin
The MonoTouch solution includes two projects.
MonoTouch Binding Project: API Contract interfaces for linked native
ObjC library
Test Client Application
The native ObjC library requires to include Core Data Model file (.momd). I have added it to the project of Test App.
But app crashes with the following error:
Unhandled Exception: MonoTouch.Foundation.MonoTouchException: Objective-C exception thrown. Name: NSInvalidArgumentException Reason: Cannot create an NSPersistentStoreCoordinator with a nil model
at (wrapper managed-to-native) MonoTouch.ObjCRuntime.Messaging:void_objc_msgSendSuper_IntPtr_bool (intptr,intptr,intptr,bool)
at MonoTouch.UIKit.UIViewController.PresentModalViewController (MonoTouch.UIKit.UIViewController modalViewController, Boolean animated) [0x00038] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIViewController.g.cs:261
at CombinedControllerApp.MainController.<ViewDidLoad>m__2 (System.Object , System.EventArgs ) [0x0003d] in /Users/mahmood1/Documents/Projects/TouchNote-Prototype/CombinedControllerApp/MainController.cs:96
at MonoTouch.UIKit.UIControlEventProxy.Activated () [0x00000] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIControl.cs:30
at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication:UIApplicationMain (int,string[],intptr,intptr)
at MonoTouch.UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x00042] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:29
at CombinedControllerApp.Application.Main (System.String[] args) [0x00000] in /Users/mahmood1/Documents/Projects/TouchNote-Prototype/CombinedControllerApp/Main.cs:17
[ERROR] FATAL UNHANDLED EXCEPTION: MonoTouch.Foundation.MonoTouchException: Objective-C exception thrown. Name: NSInvalidArgumentException Reason: Cannot create an NSPersistentStoreCoordinator with a nil model
at (wrapper managed-to-native) MonoTouch.ObjCRuntime.Messaging:void_objc_msgSendSuper_IntPtr_bool (intptr,intptr,intptr,bool)
at MonoTouch.UIKit.UIViewController.PresentModalViewController (MonoTouch.UIKit.UIViewController modalViewController, Boolean animated) [0x00038] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIViewController.g.cs:261
at CombinedControllerApp.MainController.<ViewDidLoad>m__2 (System.Object , System.EventArgs ) [0x0003d] in /Users/mahmood1/Documents/Projects/TouchNote-Prototype/CombinedControllerApp/MainController.cs:96
at MonoTouch.UIKit.UIControlEventProxy.Activated () [0x00000] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIControl.cs:30
at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication:UIApplicationMain (int,string[],intptr,intptr)
at MonoTouch.UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x00042] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:29
at CombinedControllerApp.Application.Main (System.String[] args) [0x00000] in /Users/mahmood1/Documents/Projects/TouchNote-Prototype/CombinedControllerApp/Main.cs:17
How to add this needed CoreData Model File into Test Application that it will be visible for the native library?
Thanks!
(Sources are here : http://www.axifile.com/en/71EC96914A)
Per my comment:
Adding most files like this to your project with Build Action of Content will solve the issue.
we are working in a project involving the use of EMGU and in particoular the SVM functions of OpenCV and we have a problem using Mono on a Ubuntu platform and we don't have this problem on windows. The problem appears when we call the Emgu.CV.ML.SVM.Train method. All the parameters are correct and we canno't debug the wrapped code...
We have tried to increase the Shared Memory and other tricks but it doesn't work.
Do you have any idea?
Thank you
Angelo
Unhandled Exception: Emgu.CV.CvException: OpenCV: requested size is negative or too big
at Emgu.CV.CvInvoke.CvErrorHandler (Int32 status, System.String funcName, System.String errMsg, System.String fileName, Int32 line, IntPtr userData) [0x00000]
at (wrapper native-to-managed) Emgu.CV.CvInvoke:CvErrorHandler (int,intptr,intptr,intptr,int,intptr)
at (wrapper managed-to-native) Emgu.CV.ML.MlInvoke:CvSVMTrain (intptr,intptr,intptr,intptr,intptr,Emgu.CV.ML.Structure.MCvSVMParams)
at Emgu.CV.ML.SVM.Train (Emgu.CV.Matrix`1 trainData, Emgu.CV.Matrix`1 responses, Emgu.CV.Matrix`1 varIdx, Emgu.CV.Matrix`1 sampleIdx, Emgu.CV.ML.SVMParams parameters) [0x00000]
at Segmentation.ImageFeatures.LeafHog.TrainModel (IDictionary`2 dicInOutImage) [0x00000]
at Segmentation.ImageSegmentators.Composite.TrainModel (IDictionary`2 dicInOutImage) [0x00000]
at Segmentation.ImageSegmentators.CompositionMlpRprop.TrainModel (IDictionary`2 dicInOutImage) [0x00000]
at Segmentation.GeneticConfig.ChromoCreator.GetASegmentation (IConfigChromosome configChromosome, IDictionary`2 dicInOutImageTrain) [0x00000]
at Segmentation.GeneticConfig.ConfigChromoProvider.AddChromosomeIfNew (IConfigChromosome chromo) [0x00000]
at Segmentation.GeneticConfig.ConfigChromosome.Generate () [0x00000]
at Segmentation.GeneticConfig.ConfigChromosome..ctor (Int32 chromoLength, IConfigChromoProvider cProvider) [0x00000]
at Segmentation.GeneticConfig.ConfigChromosome.CreateNew () [0x00000]
at AForge.Genetic.Population..ctor (Int32 size, IChromosome ancestor, IFitnessFunction fitnessFunction, ISelectionMethod selectionMethod) [0x00000]
at SegmentationCLI.Program.Main (System.String[] args) [0x00000]