search

messier16 / Forms.Controls

Home of all Messier16 Xamarin.Forms controls 😁 (now .NET standarized)
MIT License
20 stars 8 forks source link

Xamarin Forms iOS crash #1

Closed pandazzurro closed 7 years ago

pandazzurro commented 7 years ago

Hi @fferegrino, I have created Xamarin Forms app for Android e iOS. On Android it work very well but on iPhone no. Error occurred when I open new page with RatingBar.

Object reference not set to an instance of an object This is my stack trace:

at Messier16.Forms.iOS.Controls.RatingBarRenderer.OnElementChanged (Xamarin.Forms.Platform.iOS.ElementChangedEventArgs1[TElement] e) [0x0007b] in <46c34e09c93e458191c96ebbdb0e986e>:0 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].SetElement (TElement element) [0x00118] in <198357063d5b4644a3f843dfe938cc9c>:0 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].Xamarin.Forms.Platform.iOS.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00000] in <198357063d5b4644a3f843dfe938cc9c>:0 at Xamarin.Forms.Platform.iOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x0001b] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Platform.cs:192 at Xamarin.Forms.Platform.iOS.VisualElementPackager.OnChildAdded (Xamarin.Forms.VisualElement view) [0x00009] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:63 at Xamarin.Forms.Platform.iOS.VisualElementPackager.Load () [0x0001e] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:36 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].SetElement (TElement element) [0x000cc] in <198357063d5b4644a3f843dfe938cc9c>:0 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].Xamarin.Forms.Platform.iOS.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00000] in <198357063d5b4644a3f843dfe938cc9c>:0 at Xamarin.Forms.Platform.iOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x0001b] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Platform.cs:192 at Xamarin.Forms.Platform.iOS.VisualElementPackager.OnChildAdded (Xamarin.Forms.VisualElement view) [0x00009] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:63 at Xamarin.Forms.Platform.iOS.VisualElementPackager.Load () [0x0001e] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:36 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].SetElement (TElement element) [0x000cc] in <198357063d5b4644a3f843dfe938cc9c>:0 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].Xamarin.Forms.Platform.iOS.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00000] in <198357063d5b4644a3f843dfe938cc9c>:0 at Xamarin.Forms.Platform.iOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x0001b] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Platform.cs:192 at Xamarin.Forms.Platform.iOS.VisualElementPackager.OnChildAdded (Xamarin.Forms.VisualElement view) [0x00009] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:63 at Xamarin.Forms.Platform.iOS.VisualElementPackager.Load () [0x0001e] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:36 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].SetElement (TElement element) [0x000cc] in <198357063d5b4644a3f843dfe938cc9c>:0 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].Xamarin.Forms.Platform.iOS.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00000] in <198357063d5b4644a3f843dfe938cc9c>:0 at Xamarin.Forms.Platform.iOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x0001b] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Platform.cs:192 at Xamarin.Forms.Platform.iOS.VisualElementPackager.OnChildAdded (Xamarin.Forms.VisualElement view) [0x00009] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:63 at Xamarin.Forms.Platform.iOS.VisualElementPackager.OnChildAdded (System.Object sender, Xamarin.Forms.ElementEventArgs e) [0x0000f] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:113 at Xamarin.Forms.Element.OnChildAdded (Xamarin.Forms.Element child) [0x00029] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Core\Element.cs:354 at Xamarin.Forms.VisualElement.OnChildAdded (Xamarin.Forms.Element child) [0x00000] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Core\VisualElement.cs:570 at Xamarin.Forms.Layout.OnInternalAdded (Xamarin.Forms.View view) [0x0001d] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Core\Layout.cs:406 at Xamarin.Forms.Layout.InternalChildrenOnCollectionChanged (System.Object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x00089] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Core\Layout.cs:396 at System.Collections.ObjectModel.ObservableCollection1[T].OnCollectionChanged (System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x0000f] in <dfdaca8c413042bfa54e39ecfa379baa>:0 at System.Collections.ObjectModel.ObservableCollection1[T].OnCollectionChanged (System.Collections.Specialized.NotifyCollectionChangedAction action, System.Object item, System.Int32 index) [0x00009] in :0 at System.Collections.ObjectModel.ObservableCollection1[T].InsertItem (System.Int32 index, T item) [0x00024] in <dfdaca8c413042bfa54e39ecfa379baa>:0 at System.Collections.ObjectModel.Collection1[T].Add (T item) [0x00020] in <6314851f133e4e74a2e96356deaa0c6c>:0 at Xamarin.Forms.ContentPresenter+d10.MoveNext () [0x0004e] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Core\ContentPresenter.cs:86 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.0.0.0/src/mono/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:151 at System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.b6_0 (System.Object state) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.0.0.0/src/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1018 at UIKit.UIKitSynchronizationContext+cAnonStorey0.<>m0 () [0x00000] in /Users/builder/data/lanes/5024/152b654a/source/xamarin-macios/src/UIKit/UIKitSynchronizationContext.cs:24 at Foundation.NSAsyncActionDispatcher.Apply () [0x00000] in /Users/builder/data/lanes/5024/152b654a/source/xamarin-macios/src/Foundation/NSAction.cs:163 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/5024/152b654a/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/5024/152b654a/source/xamarin-macios/src/UIKit/UIApplication.cs:63 at VendingChecker.iOS.Application.Main (System.String[] args) [0x00001] in /Users/andrea/Documents/VendingChecker/VendingChecker/VendingChecker.iOS/Main.cs:17 `

Thanks

fferegrino commented 7 years ago

I'll take a look at it in the weekend. It'd be best if you could provide a sample project where the error happens.

On 29 Sep 2017 3:11 pm, "Andrea Tosato" notifications@github.com wrote:

Hi @fferegrino https://github.com/fferegrino, I have created Xamarin Forms app for Android e iOS. On Android it work very well but on iPhone no. Error occurred when I open new page with RatingBar.

Object reference not set to an instance of an object This is my stack trace:

at Messier16.Forms.iOS.Controls.RatingBarRenderer.OnElementChanged (Xamarin.Forms.Platform.iOS.ElementChangedEventArgs1[TElement] e) [0x0007b] in <46c34e09c93e458191c96ebbdb0e986e>:0 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].SetElement (TElement element) [0x00118] in <198357063d5b4644a3f843dfe938cc9c>:0 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].Xamarin.Forms. Platform.iOS.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00000] in < 198357063d5b4644a3f843dfe938cc9c>:0 at Xamarin.Forms.Platform.iOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x0001b] in C:\BuildAgent3\work\ ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Platform.cs:192 at Xamarin.Forms.Platform.iOS.VisualElementPackager.OnChildAdded (Xamarin.Forms.VisualElement view) [0x00009] in C:\BuildAgent3\work\ ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:63 at Xamarin.Forms.Platform.iOS.VisualElementPackager.Load () [0x0001e] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\ VisualElementPackager.cs:36 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].SetElement (TElement element) [0x000cc] in <198357063d5b4644a3f843dfe938cc9c>:0 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].Xamarin.Forms. Platform.iOS.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00000] in < 198357063d5b4644a3f843dfe938cc9c>:0 at Xamarin.Forms.Platform.iOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x0001b] in C:\BuildAgent3\work\ ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Platform.cs:192 at Xamarin.Forms.Platform.iOS.VisualElementPackager.OnChildAdded (Xamarin.Forms.VisualElement view) [0x00009] in C:\BuildAgent3\work\ ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:63 at Xamarin.Forms.Platform.iOS.VisualElementPackager.Load () [0x0001e] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\ VisualElementPackager.cs:36 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].SetElement (TElement element) [0x000cc] in <198357063d5b4644a3f843dfe938cc9c>:0 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].Xamarin.Forms. Platform.iOS.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00000] in < 198357063d5b4644a3f843dfe938cc9c>:0 at Xamarin.Forms.Platform.iOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x0001b] in C:\BuildAgent3\work\ ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Platform.cs:192 at Xamarin.Forms.Platform.iOS.VisualElementPackager.OnChildAdded (Xamarin.Forms.VisualElement view) [0x00009] in C:\BuildAgent3\work\ ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:63 at Xamarin.Forms.Platform.iOS.VisualElementPackager.Load () [0x0001e] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\ VisualElementPackager.cs:36 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].SetElement (TElement element) [0x000cc] in <198357063d5b4644a3f843dfe938cc9c>:0 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].Xamarin.Forms. Platform.iOS.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00000] in < 198357063d5b4644a3f843dfe938cc9c>:0 at Xamarin.Forms.Platform.iOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x0001b] in C:\BuildAgent3\work\ ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Platform.cs:192 at Xamarin.Forms.Platform.iOS.VisualElementPackager.OnChildAdded (Xamarin.Forms.VisualElement view) [0x00009] in C:\BuildAgent3\work\ ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:63 at Xamarin.Forms.Platform.iOS.VisualElementPackager.OnChildAdded (System.Object sender, Xamarin.Forms.ElementEventArgs e) [0x0000f] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\ VisualElementPackager.cs:113 at Xamarin.Forms.Element.OnChildAdded (Xamarin.Forms.Element child) [0x00029] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin. Forms.Core\Element.cs:354 at Xamarin.Forms.VisualElement.OnChildAdded (Xamarin.Forms.Element child) [0x00000] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin. Forms.Core\VisualElement.cs:570 at Xamarin.Forms.Layout.OnInternalAdded (Xamarin.Forms.View view) [0x0001d] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin. Forms.Core\Layout.cs:406 at Xamarin.Forms.Layout.InternalChildrenOnCollectionChanged (System.Object sender, System.Collections.Specialized. NotifyCollectionChangedEventArgs e) [0x00089] in C:\BuildAgent3\work\ ca3766cfc22354a1\Xamarin.Forms.Core\Layout.cs:396 at System.Collections.ObjectModel.ObservableCollection1[T].OnCollectionChanged (System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x0000f] in :0 at System.Collections. ObjectModel.ObservableCollection1[T].OnCollectionChanged (System.Collections.Specialized.NotifyCollectionChangedAction action, System.Object item, System.Int32 index) [0x00009] in :0 at System.Collections.ObjectModel.ObservableCollection1[T].InsertItem (System.Int32 index, T item) [0x00024] in :0 at System.Collections.ObjectModel.Collection1[T].Add (T item) [0x00020] in <6314851f133e4e74a2e96356deaa0c6c>:0 at Xamarin.Forms.ContentPresenter+d__10.MoveNext () [0x0004e] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Core\ContentPresenter. cs:86 --- End of stack trace from previous location where exception was thrown

at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.0.0. 0/src/mono/mcs/class/referencesource/mscorlib/system/runtime/ exceptionservices/exceptionservicescommon.cs:151 at System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.b__6_0 (System.Object state) [0x00000] in /Library/Frameworks/Xamarin. iOS.framework/Versions/11.0.0.0/src/mono/mcs/class/ referencesource/mscorlib/system/runtime/compilerservices/ AsyncMethodBuilder.cs:1018 at UIKit.UIKitSynchronizationContext+cAnonStorey0.<>m0 () [0x00000] in /Users/builder/data/lanes/5024/152b654a/source/xamarin- macios/src/UIKit/UIKitSynchronizationContext.cs:24 at Foundation.NSAsyncActionDispatcher.Apply () [0x00000] in /Users/builder/data/lanes/5024/152b654a/source/xamarin- macios/src/Foundation/NSAction.cs:163 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/ 5024/152b654a/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/5024/152b654a/source/xamarin-macios/src/UIKit/ UIApplication.cs:63 at VendingChecker.iOS.Application.Main (System.String[] args) [0x00001] in /Users/andrea/Documents/VendingChecker/VendingChecker/VendingChecker.iOS/Main.cs:17 `

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/messier16/Forms.Controls/issues/1, or mute the thread https://github.com/notifications/unsubscribe-auth/ABvJEuXbEZG8XYlzg3Y1KvFv3StVPmHHks5snPp4gaJpZM4PouvT .

pandazzurro commented 7 years ago

Example https://github.com/pandazzurro/MessierExample Thanks

pandazzurro commented 7 years ago

My errors derive from: https://github.com/messier16/Forms.Controls/blob/24ceff8f9ad48b398cf5c402cb21f1cc486cf9b6/Forms.Controls.iOS/RatingBarRenderer.cs#L36-L37

In Android render the default image is star but in this case Image is null.

pandazzurro commented 7 years ago

On iOS must specify: FilledImage="star_filled.png" Image="star.png" Must insert .png on resources folder

Can I close issue? Thanks

fferegrino commented 7 years ago

Yes, I'll update it if I find that something can be done to address this issue so it works or informs the user in a better way.

2017-10-02 15:38 GMT+01:00 Andrea Tosato notifications@github.com:

On iOS must specify: FilledImage="star_filled.png" Image="star.png" Must insert .png on resources folder

Can I close issue? Thanks

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/messier16/Forms.Controls/issues/1#issuecomment-333554338, or mute the thread https://github.com/notifications/unsubscribe-auth/ABvJEn7j-1dhT2MMaRl4bNxUlDKoJ8Nnks5soPVqgaJpZM4PouvT .

--

Antonio Feregrino Bolaños |:) I do programming stuff! Blog: http://thatcsharpguy.com *A silent smile, a private kind of happiness*.

Signature powered by http://www.wisestamp.com/email-install?utm_source=extension&utm_medium=email&utm_campaign=footer WiseStamp http://www.wisestamp.com/email-install?utm_source=extension&utm_medium=email&utm_campaign=footer