The sfPdfViewer control does not initialize and crashes
The exception message+stacktrace is:
{System.NullReferenceException: Object reference not set to an instance of an object at Syncfusion.SfPdfViewer.XForms.SfPdfViewer.set_ShowPageNumber (System.Boolean value) [0x00024] in <236731af99274bf7a18b32d8990d96ce>:0 at App3.MainPage.InitializeComponent () [0x00012] in C:\Users\behza\source\repos\App3\App3\App3\obj\Debugetstandard2.0\MainPage.xaml.g.cs:22 at App3.MainPage..ctor () [0x00008] in C:\Users\behza\source\repos\App3\App3\App3\MainPage.xaml.cs:15 at App3.App..ctor () [0x0000f] in C:\Users\behza\source\repos\App3\App3\App3\App.xaml.cs:13 at App3.iOS.AppDelegate.FinishedLaunching (UIKit.UIApplication app, Foundation.NSDictionary options) [0x00007] in C:\Users\behza\source\repos\App3\App3\App3.iOS\AppDelegate.cs:26 at (wrapper managed-to-native) UIKit.UIApplication.UIApplicationMain(int,string[],intptr,intptr) at UIKit.UIApplication.Main (System.String[] args, System.Type principalClass, System.Type delegateClass) [0x0003b] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:85 at App3.iOS.Application.Main (System.String[] args) [0x00001] in C:\Users\behza\source\repos\App3\App3\App3.iOS\Main.cs:17 }
Visual studio 2022
Xamarin forms: 5.0.0.2401
SfPdfViewer: 20.1.0.57
Attachment: App3_a76655b6.zip
Hi Behzad,
We were able to reproduce the issue, “Using ShowPageNumber API throws NullReferenceException ” . Currently, we are validating this issue and we will update the further details on May 31, 2022.
Regards,
Vikram
Hi Behzad,
On our validation we found that this is sample level issue and to overcome this issue an additional step is required to render
the SfPdfViewer control in iOS project. You need to call the Syncfusion.SfPdfViewer.XForms.iOS.SfPdfDocumentViewRenderer.Init() in the FinishedLaunching overridden method of the AppDelegate class.
UG Documentation: https://help.syncfusion.com/xamarin/pdf-viewer/getting-started#creating-a-simple-pdf-viewer-application
Regards,
Vikram
