can we assume that, in a B4XPages project, MainPage will always be already initialized when Application_OpenUrl is called, so the following code is safe and won't crash?
some preliminary test suggest this is true (starting the app via OpenUrl("packagename://someparameter"), but I don't know if there are some edge cases out there.
B4X:
Sub Application_OpenUrl (Url As String, Data As Object, SourceApplication As String) As Boolean
B4XPages.MainPage.Application_OpenUrl(Url, Data, SourceApplication)
Return True
End Subsome preliminary test suggest this is true (starting the app via OpenUrl("packagename://someparameter"), but I don't know if there are some edge cases out there.