Checkbox not appearing in iOS app, but working on android

Hi, this isn't really an issue, but how do you change the color of the checkbox?

thanks!

Hello, I've a problem using your control checkbox.
In iOS (Xam Forms project), if I don't call Messier16.Forms.iOS.Controls.CheckboxRenderer.Init(); in the appdelegate, my app crashes

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+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+c__AnonStorey0.<>m__0 () [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

Hi,

I've just implemented your ratingcontrol in my project. It looks very good, but unfortunately it seems to ignore the FillColor property. I've tried to set it from my xaml and backend but it isn't changing. It keeps showing the default blue color.

Any idea?

Hope to hear from you .

Daniël

System.Exception: 'Could not initialize an instance of the type 'UIKit.UIImage': the native 'initWithContentsOfFile:' method returned nil.
It is possible to ignore this condition by setting ObjCRuntime.Class.ThrowOnInitFailure to false.'
iOS Version: 14.3

<messier16:RatingBar FilledImage="estrela.png"
                               Image="estrelapreenchida.png"  Rating="{Binding Nota, Mode=TwoWay}"
                               MaxRating="5" WidthRequest="50"
                               FillColor="Gray"
                               HeightRequest="50" />

images are in the resource folder and marked as bundleresource

I have like 50 checkbox in various screens. When people hit my clear button i through bindings uncheck all my checkbox but sometimes some checkbox are halfway through the animation of uncheck. It happens randomly (It does not happen to the same checkboxs). I dont know if i am doing something wrong :(

Uncheck Bug Mode

vs Check Mode

Include in my project but it's not working on IOS. It was working before updating the forms. I get this warning:
Severity Code Description Project File Line Suppression Status
Warning The 'Messier16.Forms.Controls 2.2.0' package was restored using '.NETFramework,Version=v4.6.1, .NETFramework,Version=v4.6.2, .NETFramework,Version=v4.7, .NETFramework,Version=v4 .7.1, .NETFramework,Version=v4.7.2, .NETFramework,Version=v4.8' instead of the project target framework '.NETStandard,Version=v2.0'. This package may not be fully compatible with your project. App.iOS D:\Project\Xamarin_App_Resale\App\App\App\App.csproj

I have a simple form set up with a checkbox control in called chkBox (set up in XAML). It seems that the CheckedChanged event is coming up as a field rather than an event (shows an F in intellisense rather than an E). This means it can't be accessed in XAML or in the code behind using

chkBox.CheckedChanged += ChkBox_Changed;

(or something similar)

I have only got time to test it on UWP at the moment.
But basically, the clickable area of the checkbox is larger than the checkbox itself.

There's a way to put the text of the checkbox? I tried with the classic chk.Text but it didn't worked

Hi,

I want to use your checkbox control instead of the default switch. At the moment I am binding a boolean to the 'IsToggled' and using the 'Toggled' parameter to trigger an action whenever the switch is toggled.

Is there a way to have the same result using the checkboxes, because at the moment I'm using the 'Checked' parameter to bind the boolean, but cannot figure out how to trigger an action when it is checked.

Thanks.

As the title states, the checkbox does not change size on android regardless of size properties. The touch area increases but the rendered checkbox is the same size regardless. No other elements restricts the size and it renders correctly on iOS.