Android Question B4xpagesmanager error

[djmainero]

Hello!

I'm getting this error informed on firebase crashlytics, i can't reproduce it, so I don't know how to fix it or where's the problem.

[CODE lang="b4x" title="Error"]
Fatal Exception: java.lang.NullPointerException: Attempt to read from field 'java.lang.Object com.empresa.appname.b4xpagesmanager$_b4xpageinfo.B4XPage' on a null object reference
at com.empresa.appname.b4xpagesmanager._getpage(b4xpagesmanager.java:575)
at com.empresa.appname.b4xpages._getpage(b4xpages.java:75)
at com.empresa.appname.b4xmainpage$ResumableSub_B4XPage_Created.resume(b4xmainpage.java:279)
at com.empresa.appname.b4xmainpage._b4xpage_created(b4xmainpage.java:184)
at java.lang.reflect.Method.invoke(Method.java)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:213)
at anywheresoftware.b4a.keywords.Common.CallSub4(Common.java:1082)
at anywheresoftware.b4a.keywords.Common.CallSubNew2(Common.java:1037)
at com.empresa.appname.b4xpagesmanager._createpageifneeded(b4xpagesmanager.java:532)
at com.empresa.appname.b4xpagesmanager._showpage(b4xpagesmanager.java:869)
at com.empresa.appname.b4xpagesmanager._addpage(b4xpagesmanager.java:209)
at com.empresa.appname.b4xpagesmanager._addpageandcreate(b4xpagesmanager.java:216)
at com.empresa.appname.b4xpagesmanager._initialize(b4xpagesmanager.java:720)
at com.empresa.appname.main._activity_create(main.java:378)
at java.lang.reflect.Method.invoke(Method.java)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:213)
at com.empresa.appname.main.afterFirstLayout(main.java:105)
at com.empresa.appname.main.access$000(main.java:17)
at com.empresa.appname.main$WaitForLayout.run(main.java:83)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5421)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
[/CODE]

Thanks!!

 

[Erel]

Make sure to add all pages in B4XPage_Created of B4XMainPage.

 

[djmainero]

Thanks for replying!

All pages are being created in B4XMainPage

 

[Erel]

Can you post the full code in B4XPage_Created of B4XMainPage?

 

[djmainero]

Of course, here's

[CODE lang="b4x" title="Private Sub B4XPage_Created (Root1 As B4XView)"]If Glo.CrearPages Then
Glo.CrearPages = False

Home.Initialize
B4XPages.AddPageAndCreate("Home", Home)

ListadoDeudaPage.Initialize
B4XPages.AddPageAndCreate("ListadoDeudaPage", ListadoDeudaPage)

GuiaPage.Initialize
B4XPages.AddPageAndCreate("GuiaPage", GuiaPage)

ConsumosPage.Initialize
B4XPages.AddPageAndCreate("ConsumosPage", ConsumosPage)

ReclamosPage.Initialize
B4XPages.AddPageAndCreate("ReclamosPage", ReclamosPage)

UsuariosPage.Initialize
B4XPages.AddPageAndCreate("UsuariosPage", UsuariosPage)

NotificacionesPage.Initialize
B4XPages.AddPageAndCreate("NotificacionesPage", NotificacionesPage)

AdherentesPage.Initialize
B4XPages.AddPageAndCreate("AdherentesPage", AdherentesPage)

FallecidosPage.Initialize
B4XPages.AddPageAndCreate("FallecidosPage", FallecidosPage)

ProblemaIniciarPage.Initialize
B4XPages.AddPageAndCreate("ProblemaIniciarPage", ProblemaIniciarPage)
Else
Home = B4XPages.GetPage("Home")
ListadoDeudaPage = B4XPages.GetPage("ListadoDeudaPage")
GuiaPage = B4XPages.GetPage("GuiaPage")
ConsumosPage = B4XPages.GetPage("ConsumosPage")
ReclamosPage = B4XPages.GetPage("ReclamosPage")
UsuariosPage = B4XPages.GetPage("UsuariosPage")
NotificacionesPage = B4XPages.GetPage("NotificacionesPage")
AdherentesPage = B4XPages.GetPage("AdherentesPage")
FallecidosPage = B4XPages.GetPage("FallecidosPage")
ProblemaIniciarPage = B4XPages.GetPage("ProblemaIniciarPage")
End If
B4XPages.GetManager.LogEvents = True

Root = Root1
Root.LoadLayout("LoginPage")
If Glo.isDarkMode Then
iLogoSys.SetBitmap(xui.LoadBitmapResize(File.DirAssets, "LogoMembreteB.png", iLogoSys.Width, iLogoSys.Height, True))
End If
'CheckUpdate

SetStatusBarColor(xui.Color_ARGB(255, 63, 99, 171))
ShowLoading
CreaListaLogin

#If B4A
Private cd As ColorDrawable
cd.Initialize(Colors.Transparent, 0)
txtUsuario.Background = cd
txtPass.Background = cd
If Not(Glo.FondoCoop.IsInitialized) Then Glo.FondoCoop = xui.LoadBitmapResize(File.DirAssets, "fondocoop.jpg", 100%x, 100%y, True)
#Else
Glo.FondoCoop = xui.LoadBitmap(File.DirAssets, "fondocoop.jpg")
#End If

DateTime.DateFormat = "dd/MM/yyyy"
imgFondoHeader.SetBitmap(Glo.FondoCoop)
Wait For (initDB) Complete(Result As Boolean)

Try
For Each Archivo As String In File.ListFiles(Glo.Provider.SharedFolder)
If Archivo.EndsWith(".pdf") Then File.Delete(Glo.Provider.SharedFolder, Archivo)
Next
Catch
Log(LastException)
End Try

Wait For (listaCoops) Complete(Finish As Boolean)
#IF Coop
listadoCooperativas.mBase.Visible = False
#End If
If Finish Then
#IF Coop
For i = 0 To listadoCooperativas.Size
'Log(listadoCooperativas.GetItem(i)) 'Cooperativa de Gral. Coop
If listadoCooperativas.GetItem(i).Contains("Coop") Then
lblNombreApp.Text = listadoCooperativas.GetItem(i)
setCoope(i)
listadoCooperativas_SelectedIndexChanged(i)
Exit
End If
Next
#End If
End If[/CODE]

Glo.CrearPages start always as True, and sets to False here only

Thanks!

 

[Erel]

Something is strange here. B4XPage_Created should run exactly once. Why is this condition needed?

 

[djmainero]

I think is a residual code that I left from a test that I did, ignore it.

(Sorry for the late response)

 

[Erel]

Based on the error message Glo.CrearPages = False and it will cause your app to crash.