I am creating SfBarcode generator from user input text. User choose type of code, then write text and generate it by button. Code is in attach file
1) I can´t use these characters in QRCode: š,č,ř,ž,... (diacritic) but standard qrcode and datamatrix alow these characters
2) I don't know how to write try, catch if user insert not supported characters by barcode (for now I do manually control in code)
3)
On iOS is everything ok (work as I want), but on android i get this message:
"Object reference not set to an instance of an object."
{System.NullReferenceException: Object reference not set to an instance of an object.
at Syncfusion.SfBarcode.XForms.Android.SfBarcodeMapping.OnSfBarcodePropertyChanged (System.String propertyName, Syncfusion.SfBarcode.XForms.SfBarcode barcode, Com.Syncfusion.Barcode.SfBarcode nativeBarcode) [0x004cb] in <e5b50884afa840daa78448e5114ae941>:0
at Syncfusion.SfBarcode.XForms.Android.SfBarcodeRenderer.OnElementPropertyChanged (System.Object sender, System.ComponentModel.PropertyChangedEventArgs e) [0x00014] in <e5b50884afa840daa78448e5114ae941>:0
at (wrapper delegate-invoke) <Module>.invoke_void_object_PropertyChangedEventArgs(object,System.ComponentModel.PropertyChangedEventArgs)
at Xamarin.Forms.BindableObject.OnPropertyChanged (System.String propertyName) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:150
at Xamarin.Forms.Element.OnPropertyChanged (System.String propertyName) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\Element.cs:370
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) [0x00114] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:623
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:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:417
at Xamarin.Forms.BindableObject.SetValue (Xamarin.Forms.BindableProperty property, System.Object value, System.Boolean fromStyle, System.Boolean checkAccess) [0x0003d] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:573
at Xamarin.Forms.BindableObject.SetValue (Xamarin.Forms.BindableProperty property, System.Object value) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:99
at Syncfusion.SfBarcode.XForms.SfBarcode.set_SymbologySettings (Syncfusion.SfBarcode.XForms.BarcodeSettings value) [0x00000] in <25124daea36445bba3d101f15dac02fc>:0
at Syncfusion.SfBarcode.XForms.SfBarcode.Dispose () [0x00008] in <25124daea36445bba3d101f15dac02fc>:0
at Syncfusion.SfBarcode.XForms.Android.SfBarcodeRenderer.Dispose () [0x00008] in <e5b50884afa840daa78448e5114ae941>:0
at Xamarin.Forms.Platform.Android.VisualElementPackager.RemoveChild (Xamarin.Forms.VisualElement view) [0x00072] in D:\a\1\s\Xamarin.Forms.Platform.Android\VisualElementPackager.cs:203
at Xamarin.Forms.Platform.Android.VisualElementPackager.OnChildRemoved (System.Object sender, Xamarin.Forms.ElementEventArgs e) [0x00021] in D:\a\1\s\Xamarin.Forms.Platform.Android\VisualElementPackager.cs:175
at Xamarin.Forms.Element.OnChildRemoved (Xamarin.Forms.Element child) [0x00007] in D:\a\1\s\Xamarin.Forms.Core\Element.cs:355
at Xamarin.Forms.VisualElement.OnChildRemoved (Xamarin.Forms.Element child) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\VisualElement.cs:751
at Xamarin.Forms.Layout.OnInternalRemoved (Xamarin.Forms.View view) [0x00012] in D:\a\1\s\Xamarin.Forms.Core\Layout.cs:461
at Xamarin.Forms.Layout.InternalChildrenOnCollectionChanged (System.Object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x0002f] in D:\a\1\s\Xamarin.Forms.Core\Layout.cs:425
at System.Collections.ObjectModel.ObservableCollection`1[T].OnCollectionChanged (System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x00018] in <3e9b3e26c4694baab3f689687ad40612>:0
at System.Collections.ObjectModel.ObservableCollection`1[T].OnCollectionChanged (System.Collections.Specialized.NotifyCollectionChangedAction action, System.Object item, System.Int32 index) [0x00009] in <3e9b3e26c4694baab3f689687ad40612>:0
at System.Collections.ObjectModel.ObservableCollection`1[T].RemoveItem (System.Int32 index) [0x00021] in <3e9b3e26c4694baab3f689687ad40612>:0
at System.Collections.ObjectModel.Collection`1[T].RemoveAt (System.Int32 index) [0x0002b] in <d4a23bbd2f544c30a48c44dd622ce09f>:0
at Xamarin.Forms.TemplateUtilities.OnContentChanged (Xamarin.Forms.BindableObject bindable, System.Object oldValue, System.Object newValue) [0x00018] in D:\a\1\s\Xamarin.Forms.Core\TemplateUtilities.cs:63
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) [0x00120] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:625
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:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:417
at Xamarin.Forms.BindableObject.SetValue (Xamarin.Forms.BindableProperty property, System.Object value, System.Boolean fromStyle, System.Boolean checkAccess) [0x0003d] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:573
at Xamarin.Forms.BindableObject.SetValue (Xamarin.Forms.BindableProperty property, System.Object value) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:99
at Xamarin.Forms.ContentView.set_Content (Xamarin.Forms.View value) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\ContentView.cs:11
at FlowerMobileTrends.Views.PageBarcodeCreator+<OnButtonBarcodeCreate_Click>d__7.MoveNext () [0x000c0] in D:\Projekty\FlowerMobileTrends\FlowerMobileTrends\FlowerMobileTrends\Views\PageBarcodeCreator.xaml.cs:232 }
Attachment:
barcode_8e457b09.zip
