Xamarin ios 16.0系统参数异常：“nan”不是宽度“n main.cs”的有效值;

qmelpv7a  于 2022-12-24  发布在  iOS
关注(0)|答案(1)|浏览(86)

Xamarin.窗体NaN不是有效的宽度值
Visual工作室2022（17.3.6）
Xamarin 17.3.0.308在Xamarin中。iOS和Xamarin.Mac软件开发工具包16.0.0.75（e4 f48 bed 7）
当我在页面上按Tab键时，应用程序中止并关闭此异常发生在ios16.0中

public class Application
    {
        // This is the main entry point of the application.
        static void Main(string[] args)
        {
            UIApplication.Main(args, null, "AppDelegate");//here is the exception occur
        }
    }

xaml.cs

<ListView  x:Name="AbyatListView" 
                               BackgroundColor="{DynamicResource BackgroundColor}" 
                               HasUnevenRows="True" HorizontalOptions="Fill" 
                               VerticalOptions="FillAndExpand">
                        <ListView.ItemTemplate>
                            <DataTemplate>
                                <ViewCell >

                                    <Grid  Padding="5,5,5,5">

                                        <Grid.RowDefinitions>
                                            <RowDefinition />
                                            <RowDefinition Height="Auto"/>
                                        </Grid.RowDefinitions>
                                        <Label Grid.Row="0" Text="{Binding text1}" FontFamily="{Binding fonttext}" FontSize="20" TextColor="{DynamicResource TextSecondaryColor}" HorizontalOptions="Start"/>
                                        <Label Grid.Row="1" Text="{Binding text2}" FontFamily="{Binding fonttext}" FontSize="20" TextColor="{DynamicResource TextSecondaryColor}" HorizontalTextAlignment="Center" HorizontalOptions="Center"/>
                                    </Grid>

                                </ViewCell>
                            </DataTemplate>
                        </ListView.ItemTemplate>
                    </ListView>

原木

**System.ArgumentException:** 'NaN is not a valid value for width'

2022-11-04 20:31:20.181167+0200 MotonQasida.iOS[3631:26150] 
Unhandled Exception:
System.ArgumentException: NaN is not a valid value for width
  at Xamarin.Forms.Size..ctor (System.Double width, System.Double height) [0x00008] in D:\a\1\s\Xamarin.Forms.Core\Size.cs:20 
  at Xamarin.Forms.Platform.iOS.UIViewExtensions.GetSizeRequest (UIKit.UIView self, System.Double widthConstraint, System.Double heightConstraint, System.Double minimumWidth, System.Double minimumHeight) [0x00010] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Extensions\UIViewExtensions.cs:91 
  at Xamarin.Forms.Platform.iOS.VisualElementRenderer`1[TElement].GetDesiredSize (System.Double widthConstraint, System.Double heightConstraint) [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.iOS\VisualElementRenderer.cs:148 
  at Xamarin.Forms.Platform.iOS.LabelRenderer.GetDesiredSize (System.Double widthConstraint, System.Double heightConstraint) [0x00008] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\LabelRenderer.cs:56 
  at Xamarin.Forms.Platform.iOS.Platf
orm.GetNativeSize (Xamarin.Forms.VisualElement view, System.Double widthConstraint, System.Double heightConstraint) [0x00040] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Platform.cs:220 
  at Xamarin.Forms.Forms+IOSPlatformServices.GetNativeSize (Xamarin.Forms.VisualElement view, System.Double widthConstraint, System.Double heightConstraint) [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Forms.cs:760 
  at Xamarin.Forms.VisualElement.OnSizeRequest (System.Double widthConstraint, System.Double heightConstraint) [0x00025] in D:\a\1\s\Xamarin.Forms.Core\VisualElement.cs:876 
  at Xamarin.Forms.VisualElement.OnMeasure (System.Double widthConstraint, System.Double heightConstraint) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\VisualElement.cs:861 
  at Xamarin.Forms.VisualElement.GetSizeRequest (System.Double widthConstraint, System.Double heightConstraint) [0x00053] in D:\a\1\s\Xamarin.Forms.Core\VisualElement.cs:750 
  at Xamarin.Forms.VisualElement.Measure (System.Double widthConstraint, System.Double heightConstraint
, Xamarin.Forms.MeasureFlags flags) [0x00054] in D:\a\1\s\Xamarin.Forms.Core\VisualElement.cs:802 
  at Xamarin.Forms.Grid+GridStructure.MeasuredStarredColumns (Xamarin.Forms.Grid grid, System.Double widthConstraint, System.Double heightConstraint, System.Double totalStarsWidth) [0x000da] in D:\a\1\s\Xamarin.Forms.Core\GridCalc.cs:670 
  at Xamarin.Forms.Grid+GridStructure.MeasureAndContractStarredColumns (Xamarin.Forms.Grid grid, System.Double width, System.Double height, System.Double totalStarsWidth) [0x0000e] in D:\a\1\s\Xamarin.Forms.Core\GridCalc.cs:588 
  at Xamarin.Forms.Grid+GridStructure..ctor (Xamarin.Forms.Grid grid, System.Double width, System.Double height, System.Boolean requestSize) [0x000ee] in D:\a\1\s\Xamarin.Forms.Core\GridCalc.cs:136 
  at Xamarin.Forms.Grid.OnSizeRequest (System.Double widthConstraint, System.Double heightConstraint) [0x0002a] in D:\a\1\s\Xamarin.Forms.Core\GridCalc.cs:55 
  at Xamarin.Forms.VisualElement.OnMeasure (System.Double widthConstraint, System.Double heightCons
traint) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\VisualElement.cs:861 
  at Xamarin.Forms.VisualElement.GetSizeRequest (System.Double widthConstraint, System.Double heightConstraint) [0x00053] in D:\a\1\s\Xamarin.Forms.Core\VisualElement.cs:750 
  at Xamarin.Forms.Layout.GetSizeRequest (System.Double widthConstraint, System.Double heightConstraint) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\Layout.cs:113 
  at Xamarin.Forms.VisualElement.Measure (System.Double widthConstraint, System.Double heightConstraint, Xamarin.Forms.MeasureFlags flags) [0x00054] in D:\a\1\s\Xamarin.Forms.Core\VisualElement.cs:802 
  at Xamarin.Forms.Platform.iOS.ListViewRenderer+UnevenListViewDataSource.CalculateHeightForCell (UIKit.UITableView tableView, Xamarin.Forms.Cell cell) [0x0004d] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\ListViewRenderer.cs:963 
  at Xamarin.Forms.Platform.iOS.ListViewRenderer+UnevenListViewDataSource.GetEstimatedRowHeight (UIKit.UITableView table) [0x00097] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderer
s\ListViewRenderer.cs:884 
  at Xamarin.Forms.Platform.iOS.ListViewRenderer+UnevenListViewDataSource.UpdateEstimatedRowHeight (UIKit.UITableView tableView) [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\ListViewRenderer.cs:899 
  at Xamarin.Forms.Platform.iOS.ListViewRenderer+ListViewDataSource.DetermineEstimatedRowHeight () [0x00009] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\ListViewRenderer.cs:1351 
  at Xamarin.Forms.Platform.iOS.FormsUITableViewController.ViewWillLayoutSubviews () [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\ListViewRenderer.cs:1694 
  at (wrapper managed-to-native) UIKit.UIApplication.xamarin_UIApplicationMain(int,string[],intptr,intptr,intptr&)
  at UIKit.UIApplication.UIApplicationMain (System.Int32 argc, System.String[] argv, System.IntPtr principalClassName, System.IntPtr delegateClassName) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/16.0.0.75/src/Xamarin.iOS/UIKit/UIApplication.cs:57 
  at UIKit.UIApplication.Main (System.String[]
 args, System.String principalClassName, System.String delegateClassName) [0x00013] in /Library/Frameworks/Xamarin.iOS.framework/Versions/16.0.0.75/src/Xamarin.iOS/UIKit/UIApplication.cs:82 
  at MotonQasida.iOS.Application.Main (System.String[] args) [0x00001] in C:\Users\Samer Alqadi\Documents\MEGAsync\MotonQasida\MotonQasida\MotonQasida.iOS\Main.cs:18
2022-11-04 20:31:20.185139+0200 MotonQasida.iOS[3631:26150] Unhandled managed exception: NaN is not a valid value for width (System.ArgumentException)
  at Xamarin.Forms.Size..ctor (System.Double width, System.Double height) [0x00008] in D:\a\1\s\Xamarin.Forms.Core\Size.cs:20 
  at Xamarin.Forms.Platform.iOS.UIViewExtensions.GetSizeRequest (UIKit.UIView self, System.Double widthConstraint, System.Double heightConstraint, System.Double minimumWidth, System.Double minimumHeight) [0x00010] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Extensions\UIViewExtensions.cs:91 
  at Xamarin.Forms.Platform.iOS.VisualElementRenderer`1[TElement].GetDesiredSize (System.Double widthConstraint, System.Double heightConstraint) [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.iOS\VisualElementRenderer.cs:148 
  at Xamarin.Forms.Platform.iOS.LabelRenderer.GetDesiredSize (System.Double widthConstraint, System.Double heightConstraint) [0x00008] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\LabelRenderer.cs:56 
  at Xamarin.Forms.Platform.i
OS.Platform.GetNativeSize (Xamarin.Forms.VisualElement view, System.Double widthConstraint, System.Double heightConstraint) [0x00040] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Platform.cs:220 
  at Xamarin.Forms.Forms+IOSPlatformServices.GetNativeSize (Xamarin.Forms.VisualElement view, System.Double widthConstraint, System.Double heightConstraint) [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Forms.cs:760 
  at Xamarin.Forms.VisualElement.OnSizeRequest (System.Double widthConstraint, System.Double heightConstraint) [0x00025] in D:\a\1\s\Xamarin.Forms.Core\VisualElement.cs:876 
  at Xamarin.Forms.VisualElement.OnMeasure (System.Double widthConstraint, System.Double heightConstraint) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\VisualElement.cs:861 
  at Xamarin.Forms.VisualElement.GetSizeRequest (System.Double widthConstraint, System.Double heightConstraint) [0x00053] in D:\a\1\s\Xamarin.Forms.Core\VisualElement.cs:750 
  at Xamarin.Forms.VisualElement.Measure (System.Double widthConstraint, System.Double heightCo
nstraint, Xamarin.Forms.MeasureFlags flags) [0x00054] in D:\a\1\s\Xamarin.Forms.Core\VisualElement.cs:802 
  at Xamarin.Forms.Grid+GridStructure.MeasuredStarredColumns (Xamarin.Forms.Grid grid, System.Double widthConstraint, System.Double heightConstraint, System.Double totalStarsWidth) [0x000da] in D:\a\1\s\Xamarin.Forms.Core\GridCalc.cs:670 
  at Xamarin.Forms.Grid+GridStructure.MeasureAndContractStarredColumns (Xamarin.Forms.Grid grid, System.Double width, System.Double height, System.Double totalStarsWidth) [0x0000e] in D:\a\1\s\Xamarin.Forms.Core\GridCalc.cs:588 
  at Xamarin.Forms.Grid+GridStructure..ctor (Xamarin.Forms.Grid grid, System.Double width, System.Double height, System.Boolean requestSize) [0x000ee] in D:\a\1\s\Xamarin.Forms.Core\GridCalc.cs:136 
  at Xamarin.Forms.Grid.OnSizeRequest (System.Double widthConstraint, System.Double heightConstraint) [0x0002a] in D:\a\1\s\Xamarin.Forms.Core\GridCalc.cs:55 
  at Xamarin.Forms.VisualElement.OnMeasure (System.Double widthConstraint, System.Double he
ightConstraint) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\VisualElement.cs:861 
  at Xamarin.Forms.VisualElement.GetSizeRequest (System.Double widthConstraint, System.Double heightConstraint) [0x00053] in D:\a\1\s\Xamarin.Forms.Core\VisualElement.cs:750 
  at Xamarin.Forms.Layout.GetSizeRequest (System.Double widthConstraint, System.Double heightConstraint) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\Layout.cs:113 
  at Xamarin.Forms.VisualElement.Measure (System.Double widthConstraint, System.Double heightConstraint, Xamarin.Forms.MeasureFlags flags) [0x00054] in D:\a\1\s\Xamarin.Forms.Core\VisualElement.cs:802 
  at Xamarin.Forms.Platform.iOS.ListViewRenderer+UnevenListViewDataSource.CalculateHeightForCell (UIKit.UITableView tableView, Xamarin.Forms.Cell cell) [0x0004d] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\ListViewRenderer.cs:963 
  at Xamarin.Forms.Platform.iOS.ListViewRenderer+UnevenListViewDataSource.GetEstimatedRowHeight (UIKit.UITableView table) [0x00097] in D:\a\1\s\Xamarin.Forms.Platform.iOS\
Renderers\ListViewRenderer.cs:884 
  at Xamarin.Forms.Platform.iOS.ListViewRenderer+UnevenListViewDataSource.UpdateEstimatedRowHeight (UIKit.UITableView tableView) [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\ListViewRenderer.cs:899 
  at Xamarin.Forms.Platform.iOS.ListViewRenderer+ListViewDataSource.DetermineEstimatedRowHeight () [0x00009] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\ListViewRenderer.cs:1351 
  at Xamarin.Forms.Platform.iOS.FormsUITableViewController.ViewWillLayoutSubviews () [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\ListViewRenderer.cs:1694 
  at (wrapper managed-to-native) UIKit.UIApplication.xamarin_UIApplicationMain(int,string[],intptr,intptr,intptr&)
  at UIKit.UIApplication.UIApplicationMain (System.Int32 argc, System.String[] argv, System.IntPtr principalClassName, System.IntPtr delegateClassName) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/16.0.0.75/src/Xamarin.iOS/UIKit/UIApplication.cs:57 
  at UIKit.UIApplication.Main (System.
String[] args, System.String principalClassName, System.String delegateClassName) [0x00013] in /Library/Frameworks/Xamarin.iOS.framework/Versions/16.0.0.75/src/Xamarin.iOS/UIKit/UIApplication.cs:82 
  at MotonQasida.iOS.Application.Main (System.String[] args) [0x00001] in C:\Users\Samer Alqadi\Documents\MEGAsync\MotonQasida\MotonQasida\MotonQasida.iOS\Main.cs:18

参数长度为零！
我尝试将visual studio更新到2022和xcode 14以及最新版本的xamarin form和xamarin ios

ios

1条答案

按热度按时间
x6h2sr28

x6h2sr281#

问题已通过更新nuget包解决

更新赛马林。表格=〉5.0.0.2545
更新Xamarin基本要素=〉1.7.4

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