This is a migrated thread and some comments may be shown as answers.

App crash ContentPage with RadAutoComplete

4 Answers 264 Views

AutoComplete

This is a migrated thread and some comments may be shown as answers.

Shalin asked on 15 Mar 2018, 01:37 PM

hi,

i have implemented rad auto complete succesfuly and its work perfect in android.

But when it comes to iOS, app crashes when i open page which contains RadAutoComplete. if i remove it page open and no crash.

Question - How to fix this ?

Error message

"NaN is not a valid value for width"

StackTrace

at Xamarin.Forms.Size..ctor (System.Double width, System.Double height) [0x00008] in D:\agent_work\1\s\Xamarin.Forms.Core\Size.cs:19
at Xamarin.Forms.VisualElement.GetSizeRequest (System.Double widthConstraint, System.Double heightConstraint) [0x00000] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:464
at Xamarin.Forms.VisualElement.Measure (System.Double widthConstraint, System.Double heightConstraint, Xamarin.Forms.MeasureFlags flags) [0x00054] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:535
at Xamarin.Forms.Grid.ExpandLastAutoColumnIfNeeded (System.Double width, System.Boolean expandToRequest) [0x00058] in D:\agent_work\1\s\Xamarin.Forms.Core\GridCalc.cs:337
at Xamarin.Forms.Grid.MeasureGrid (System.Double width, System.Double height, System.Boolean requestSize) [0x0013a] in D:\agent_work\1\s\Xamarin.Forms.Core\GridCalc.cs:520
at Xamarin.Forms.Grid.OnSizeRequest (System.Double widthConstraint, System.Double heightConstraint) [0x0002a] in D:\agent_work\1\s\Xamarin.Forms.Core\GridCalc.cs:58
at Xamarin.Forms.VisualElement.OnMeasure (System.Double widthConstraint, System.Double heightConstraint) [0x00000] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:601
at Xamarin.Forms.VisualElement.GetSizeRequest (System.Double widthConstraint, System.Double heightConstraint) [0x00053] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:477
at Xamarin.Forms.Layout.GetSizeRequest (System.Double widthConstraint, System.Double heightConstraint) [0x00000] in D:\agent_work\1\s\Xamarin.Forms.Core\Layout.cs:121
at Xamarin.Forms.VisualElement.Measure (System.Double widthConstraint, System.Double heightConstraint, Xamarin.Forms.MeasureFlags flags) [0x00054] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:535
at Xamarin.Forms.ScrollView.LayoutChildren (System.Double x, System.Double y, System.Double width, System.Double height) [0x0006d] in D:\agent_work\1\s\Xamarin.Forms.Core\ScrollView.cs:183
at Xamarin.Forms.Layout.UpdateChildrenLayout () [0x0014b] in D:\agent_work\1\s\Xamarin.Forms.Core\Layout.cs:245
at Xamarin.Forms.Layout.OnSizeAllocated (System.Double width, System.Double height) [0x0000f] in D:\agent_work\1\s\Xamarin.Forms.Core\Layout.cs:205
at Xamarin.Forms.VisualElement.SizeAllocated (System.Double width, System.Double height) [0x00000] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:637
at Xamarin.Forms.VisualElement.SetSize (System.Double width, System.Double height) [0x00021] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:788
at Xamarin.Forms.VisualElement.set_Bounds (Xamarin.Forms.Rectangle value) [0x0005d] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:159
at Xamarin.Forms.VisualElement.Layout (Xamarin.Forms.Rectangle bounds) [0x00000] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:519
at Xamarin.Forms.Layout.LayoutChildIntoBoundingRegion (Xamarin.Forms.VisualElement child, Xamarin.Forms.Rectangle region) [0x0016b] in D:\agent_work\1\s\Xamarin.Forms.Core\Layout.cs:159
at Xamarin.Forms.Grid.LayoutChildren (System.Double x, System.Double y, System.Double width, System.Double height) [0x00144] in D:\agent_work\1\s\Xamarin.Forms.Core\GridCalc.cs:48
at Xamarin.Forms.Layout.UpdateChildrenLayout () [0x0014b] in D:\agent_work\1\s\Xamarin.Forms.Core\Layout.cs:245
at Xamarin.Forms.Layout.OnSizeAllocated (System.Double width, System.Double height) [0x0000f] in D:\agent_work\1\s\Xamarin.Forms.Core\Layout.cs:205
at Xamarin.Forms.VisualElement.SizeAllocated (System.Double width, System.Double height) [0x00000] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:637
at Xamarin.Forms.VisualElement.SetSize (System.Double width, System.Double height) [0x00021] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:788
at Xamarin.Forms.VisualElement.set_Bounds (Xamarin.Forms.Rectangle value) [0x0005d] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:159
at Xamarin.Forms.VisualElement.Layout (Xamarin.Forms.Rectangle bounds) [0x00000] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:519
at Xamarin.Forms.Layout.LayoutChildIntoBoundingRegion (Xamarin.Forms.VisualElement child, Xamarin.Forms.Rectangle region) [0x0016b] in D:\agent_work\1\s\Xamarin.Forms.Core\Layout.cs:159
at Xamarin.Forms.Page.LayoutChildren (System.Double x, System.Double y, System.Double width, System.Double height) [0x0010d] in D:\agent_work\1\s\Xamarin.Forms.Core\Page.cs:181
at Xamarin.Forms.Page.UpdateChildrenLayout () [0x000c6] in D:\agent_work\1\s\Xamarin.Forms.Core\Page.cs:253
at Xamarin.Forms.Page.OnSizeAllocated (System.Double width, System.Double height) [0x0000f] in D:\agent_work\1\s\Xamarin.Forms.Core\Page.cs:234
at Xamarin.Forms.VisualElement.SizeAllocated (System.Double width, System.Double height) [0x00000] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:637
at Xamarin.Forms.VisualElement.SetSize (System.Double width, System.Double height) [0x00021] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:788
at Xamarin.Forms.VisualElement.set_Bounds (Xamarin.Forms.Rectangle value) [0x0005d] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:159
at Xamarin.Forms.VisualElement.Layout (Xamarin.Forms.Rectangle bounds) [0x00000] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:519
at Xamarin.Forms.Layout.LayoutChildIntoBoundingRegion (Xamarin.Forms.VisualElement child, Xamarin.Forms.Rectangle region) [0x0000a] in D:\agent_work\1\s\Xamarin.Forms.Core\Layout.cs:131
at Xamarin.Forms.Page.LayoutChildren (System.Double x, System.Double y, System.Double width, System.Double height) [0x0010d] in D:\agent_work\1\s\Xamarin.Forms.Core\Page.cs:181
at Xamarin.Forms.Page.UpdateChildrenLayout () [0x000c6] in D:\agent_work\1\s\Xamarin.Forms.Core\Page.cs:253
at Xamarin.Forms.Page.OnSizeAllocated (System.Double width, System.Double height) [0x0000f] in D:\agent_work\1\s\Xamarin.Forms.Core\Page.cs:234
at Xamarin.Forms.VisualElement.SizeAllocated (System.Double width, System.Double height) [0x00000] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:637
at Xamarin.Forms.VisualElement.SetSize (System.Double width, System.Double height) [0x00021] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:788
at Xamarin.Forms.VisualElement.set_Bounds (Xamarin.Forms.Rectangle value) [0x0005d] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:159
at Xamarin.Forms.VisualElement.Layout (Xamarin.Forms.Rectangle bounds) [0x00000] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:519
at Xamarin.Forms.Layout.LayoutChildIntoBoundingRegion (Xamarin.Forms.VisualElement child, Xamarin.Forms.Rectangle region) [0x0000a] in D:\agent_work\1\s\Xamarin.Forms.Core\Layout.cs:131
at Xamarin.Forms.Page.LayoutChildren (System.Double x, System.Double y, System.Double width, System.Double height) [0x0010d] in D:\agent_work\1\s\Xamarin.Forms.Core\Page.cs:181
at Xamarin.Forms.Page.UpdateChildrenLayout () [0x000c6] in D:\agent_work\1\s\Xamarin.Forms.Core\Page.cs:253
at Xamarin.Forms.Page.OnSizeAllocated (System.Double width, System.Double height) [0x0000f] in D:\agent_work\1\s\Xamarin.Forms.Core\Page.cs:234
at Xamarin.Forms.VisualElement.SizeAllocated (System.Double width, System.Double height) [0x00000] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:637
at Xamarin.Forms.Page.OnChildMeasureInvalidated (Xamarin.Forms.VisualElement child, Xamarin.Forms.Internals.InvalidationTrigger trigger) [0x000a9] in D:\agent_work\1\s\Xamarin.Forms.Core\Page.cs:292
at Xamarin.Forms.Page.OnChildMeasureInvalidated (System.Object sender, System.EventArgs e) [0x00013] in D:\agent_work\1\s\Xamarin.Forms.Core\Page.cs:216
at Xamarin.Forms.VisualElement.InvalidateMeasureInternal (Xamarin.Forms.Internals.InvalidationTrigger trigger) [0x0000b] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:669
at Xamarin.Forms.VisualElement.set_IsPlatformEnabled (System.Boolean value) [0x0001c] in D:\agent_work\1\s\Xamarin.Forms.Core\VisualElement.cs:377
at Xamarin.Forms.Platform.iOS.Platform+<>c.<.cctor>b__51_0 (Xamarin.Forms.BindableObject bindable, System.Object oldvalue, System.Object newvalue) [0x0000a] in <bc5a3d4303744676b3b36f4254bb697d>:0
at Xamarin.Forms.BindableObject.SetValueActual (Xamarin.Forms.BindableProperty property, Xamarin.Forms.BindableObject+BindablePropertyContext context, System.Object value, System.Boolean currentlyApplying, Xamarin.Forms.Internals.SetValueFlags attributes, System.Boolean silent) [0x0011b] in D:\agent_work\1\s\Xamarin.Forms.Core\BindableObject.cs:605
at Xamarin.Forms.BindableObject.SetValueCore (Xamarin.Forms.BindableProperty property, System.Object value, Xamarin.Forms.Internals.SetValueFlags attributes, Xamarin.Forms.BindableObject+SetValuePrivateFlags privateAttributes) [0x0015b] in D:\agent_work\1\s\Xamarin.Forms.Core\BindableObject.cs:399
at Xamarin.Forms.BindableObject.SetValue (Xamarin.Forms.BindableProperty property, System.Object value, System.Boolean fromStyle, System.Boolean checkAccess) [0x0005f] in D:\agent_work\1\s\Xamarin.Forms.Core\BindableObject.cs:552
at Xamarin.Forms.BindableObject.SetValue (Xamarin.Forms.BindableProperty property, System.Object value) [0x00000] in D:\agent_work\1\s\Xamarin.Forms.Core\BindableObject.cs:92
at Xamarin.Forms.Platform.iOS.Platform.SetRenderer (Xamarin.Forms.VisualElement bindable, Xamarin.Forms.Platform.iOS.IVisualElementRenderer value) [0x00000] in <bc5a3d4303744676b3b36f4254bb697d>:0
at Xamarin.Forms.Platform.iOS.NavigationRenderer.CreateViewControllerForPage (Xamarin.Forms.Page page) [0x0000f] in <bc5a3d4303744676b3b36f4254bb697d>:0
at Xamarin.Forms.Platform.iOS.NavigationRenderer+<OnPushAsync>d__45.MoveNext () [0x00016] in <bc5a3d4303744676b3b36f4254bb697d>:0
--- 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/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:152
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00037] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:187
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:156
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:128
at System.Runtime.CompilerServices.TaskAwaiter`1[TResult].GetResult () [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:357
at Xamarin.Forms.NavigationPage+<PushAsyncInner>d__79.MoveNext () [0x00095] in D:\agent_work\1\s\Xamarin.Forms.Core\NavigationPage.cs:360
--- 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/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:152
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00037] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:187
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:156
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:128
at System.Runtime.CompilerServices.TaskAwaiter.GetResult () [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:113
at Xamarin.Forms.NavigationPage+<PushAsync>d__52.MoveNext () [0x0017f] in D:\agent_work\1\s\Xamarin.Forms.Core\NavigationPage.cs:200
--- 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/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:152
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00037] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:187
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:156
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:128
at System.Runtime.CompilerServices.TaskAwaiter.GetResult () [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:113
at Medarbeideren.ViewModels.Implementations.MainPageViewModel+<<get_AddNewAppmntCommand>b__24_0>d.MoveNext () [0x00270] in /Users/xamarindev/Documents/Medarbeideren/Medar_UI/Medarbeideren/Medarbeideren/Medarbeideren/ViewModels/Implementations/MainPageViewModel.cs:164
--- 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/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:152
at System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.<ThrowAsync>b__6_0 (System.Object state) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1018
at UIKit.UIKitSynchronizationContext+<Post>c__AnonStorey0.<>m__0 () [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/UIKit/UIKitSynchronizationContext.cs:24
at Foundation.NSAsyncActionDispatcher.Apply () [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/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 /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/UIKit/UIApplication.cs:79
at UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x00038] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/UIKit/UIApplication.cs:63
at Medarbeideren.iOS.Application.Main (System.String[] args) [0x00001] in /Users/xamarindev/Documents/Medarbeideren/Medar_UI/Medarbeideren/Medarbeideren/Medarbeideren.iOS/Main.cs:17

UI structure

<Grid Grid.Row="8" Grid.ColumnSpan="5">

<Grid.RowDefinitions>

<RowDefinition Height="Auto"/>

</Grid.RowDefinitions>

<Label Style="{StaticResource AppointmentViewLabelStyle}" Text="{i18n:Translate APPOINT_OWNER}"

VerticalOptions="Center"/>

<Frame x:Name="ownerautocomplete" Grid.Row="1" Style="{StaticResource CommonFrameStyle}">

<telerikInput:RadAutoComplete x:Name="AutoCompleteOwner" ItemsSource="{Binding ContactsListOwner,Mode=TwoWay}"

Watermark="{i18n:Translate SEARCH_SEARCH_RESOURCES}"

DisplayMode="Plain"

Margin="0" BorderColor="Transparent" TextSearchPath="Name"

NoResultsMessage="{i18n:Translate SEARCH_SEARCH_NO_RESULT}"

FontFamily="{StaticResource PlatformBaseFontFamily}"

SuggestionViewBackgroundColor="White"

SuggestionItemSelected="AutoCompleteOwner_SuggestionItemSelected"/>

</Frame>

</Grid>

4 Answers, 1 is accepted

answered on 15 Mar 2018, 06:38 PM

Hi Shalin,

I tested your shared code and am not able to reproduce the issue using the latest release of UI for Xamarin (v.2018.1.315, released today).

Here is a screenshot at runtime:

Note: Because you only shared the XAML, I used a list of strings for the items source.

AutoCompleteOwner.ItemsSource = new List<string> {"One", "Two", "Three", "Four", "Five"};

In the stack trace, it describes a measurement problem with the last column in the Grid nested in a ScrollView. You could try giving the RadAutoComplete (or a parent) a definitive width to prevent that NaN (infinite) measurement.

<Frame x:Name="ownerautocomplete" Grid.Row="1" WidthRequest="400" >

<input:RadAutoComplete x:Name="AutoCompleteOwner" .../>

</Frame>

or try binding the RadAutoComplete's width to the Frame's measured width:

<Frame x:Name="ownerautocomplete" Grid.Row="1" >

<input:RadAutoComplete x:Name="AutoCompleteOwner"

WidthRequest="{Binding Width, Source={x:Reference ownerautocomplete}}" />

</Frame>

Lastly, there is no need to have TwoWay binding for the ItemsSource. The RadAutoComplete will not replace the bound collection so you can use the default OneWay binding:

ItemsSource="{Binding ContactsListOwner}"

Further Investigation

If none of these suggestions work, the problem resides somewhere else and we'll need to debug the problem directly. In order to do this, we'll need a runnable demo that isolates and reproduces the issue.

You can open a support ticket here and attach the demo, or reply here with a link to download it (be sure to delete the bin and obj folders before zipping).

Regards,
Lance | Tech Support Engineer, Sr.
Progress Telerik

Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Feedback Portal and vote to affect the priority of the items

answered on 16 Mar 2018, 05:09 AM

hello,

Thank you very much for your quick reply and valuable suggestions.

Setting the width to RadAutoComplete did the trick. now it works perfectly.

WidthRequest="100"

But setting it like this throws same error,

WidthRequest="{Binding Width, Source={x:Reference ownerautocomplete}}"

But without setting it controller must take width from grid or parent its in. Maybe from next release :) . Looking forward.

And also we need a capability of setting default value on autocomplete when user first sees it then user can search.
Focused event not firing when we start typing or at the time soft keyboard pops up, both iOS and Andoid

answered on 16 Mar 2018, 08:55 PM

Hello Shalin,

I'm happy to see the the explicit WidthRequest worked for you! Note that this is a stop-gap to prevent an infinite measurement. The expected behavior is to use the restraints of the parent's content dimension, this is why I cannot replicate the exception you're seeing.

If you're still willing to share the rest of that ContentPage (specifically the parent visual tree structure), I can give it to the development team to investigate further. This would allow then to determine if there needs to be a control fix or not for that scenario.

To answer your other questions:

- Default Value: You can set the value of AutoComplete.Text if you want a value in the box prior to user selection.

- Focus Events: I was able to replicate this and have logged it for the development team to investigate further. You can up-vote and follow the AutoComplete: Focus Events Not Firing Feedback Portal item

- Keyboard visible after selection: This is expected behavior. The keyboard is still visible because the cursor is still in the control after a selection is made. If you don't want this behavior, you can hook into the SuggestionItemSelected event and put the focus on another control.

If you have any further questions, please open a new forum thread for each discrete topic. This is not only to prevent delay in getting you answer now, but also makes it easier for you to search later if it's not nested under a different topic.

If you have any further product feedback, please add it to the UI for Xamarin Feedback Portal. This is tied directly to the development team's items and allows us to prioritize features and fixes for upcoming product updates.

Regards,
Lance | Tech Support Engineer, Sr.
Progress Telerik