Exception loading PDF File - System.NullReferenceException: Object reference not set to an instance of an object

[Vadim Koystinen]

Captured following exception in production.

Syncfusion library version used: 16.4.0.54

Device

Galaxy S6

OS

Android 7.0

PdfLoadedRadioButtonItem.GetItemValue ()

System.NullReferenceException: Object reference not set to an instance of an object

PdfLoadedRadioButtonItem.GetItemValue ()

PdfLoadedRadioButtonItem.get_Value ()

ScrollViewEx.AddRadioButtonField (Syncfusion.Pdf.Parsing.PdfLoadedRadioButtonItem radioButtonField, Syncfusion.SfPdfViewer.XForms.Droid.TransparentCanvas canvas, System.Int32 pageIndex, System.Int32 indexInGroup)

ScrollViewEx.AddExistingFormFields (System.Int32 pageIndex)

LinearLayoutEx.RenderPages ()

HorizontalScrollViewEx.RenderPages ()

ScrollViewEx.RenderPages ()

CountDownTimerEx.OnTick (System.Int64 millisUntilFinished)

CountDownTimer.n_OnTick_J (System.IntPtr jnienv, System.IntPtr native__this, System.Int64 millisUntilFinished)

(wrapper dynamic-method) System.Object.115(intptr,intptr,long)

[Sathish Sivakumar]

Hi Vadim, 

 

Greetings from Syncfusion. 

 

We tried to reproduce the issue “Application crashes with System.NullReferenceException” in our side, but the PDF Document is displayed properly in SfPdfViewer with v16.4.0.54. We suspect that the issue is specific to the PDF document containing form fields loaded into SfPdfViewer. We recommend you to update the SfPdfViewer to the latest version and share the following details if you still face the same issue. 

 

1. PDF document with which the issue could be reproduced.
2. Modify/Simple sample to reproduce the issue.
3. Replication procedure to reproduce the issue.

 

Please find the sample with which we tried to reproduce the reported issue in our side. 

http://www.syncfusion.com/downloads/support/forum/144363/ze/F144363-1898217430 

Regards, 

Sathish 

[Pure Ray]

Hi, SyncFusion-eer.

We are also having the same problem. Do you have an update or a workaround to share with us?

Xamarin.Forms 3.6.0.344457

Syncfusion.Xamarin.SfPdfViewer 17.1.0.51

Please and thank you.

Regards.

Ray

[Sathish Sivakumar]

Hi Ray, 

Greetings from Syncfusion.  

  

We tried to reproduce the issue “Application crashes with System.NullReferenceException” in our side, but the PDF Document is displayed properly in SfPdfViewer with v17.1.0.51. We suspect that the issue is specific to the PDF document containing form fields loaded into SfPdfViewer. Please find the sample with which we tried to reproduce the reported issue in our side.  

http://www.syncfusion.com/downloads/support/forum/144363/ze/F144363-1898217430 

Kindly share the following details to analyze more on the reported issue and assist you with the better solution. 

• PDF document with which the issue could be reproduced.
• Modify/Simple sample to reproduce the issue.
• Replication procedure to reproduce the issue.

Regards,  

Sathish