B4J Question nullpointer on datepicker

L

le_toubib

Active Member
Licensed User
Longtime User
hi all
i'm on 3.70
using this code :
Sub dp_pt_spn_dob_FocusChanged (HasFocus As Boolean)

If HasFocus = False Then
Dim date As Long
date = DateTime.DateParse(subDP3.GetDatePickerText(True))
Click to expand...

i get this error



in the line :
date = DateTime.DateParse(subDP3.GetDatePickerText(True))
Click to expand...
what am i missing ?
 
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L

le_toubib

Active Member
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Longtime User
Subdp3 is a datepicker control added in the scene builder .
Very difficult to remake the whole layout from the start using the internal designer. It's huge
 
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rwblinn

Well-Known Member
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Longtime User
Just for clarity based on this information.
If using B4J v4.00 the DataPicker control events as defined using the JavaFX Scene Builder are not supported anymore.

I did a test using B4J v4.00 and a DatePicker defined using the JavaFX Scene Builder. Events like DatePicker_ValueChanged (Value As Long) are not triggered anymore.

Suggest to mention in the B4J v4.00 Release Notes (and if there would be a workaround to resolve for complex FXML layouts which can not be converted).
There might be more impact examples, like using new views.
 
Last edited:
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L

le_toubib

Active Member
Licensed User
Longtime User
solved by changing the last line into :
B4X: 
date = DateTime.DateParse(asJO(dp_pt_spn_dob).RunMethod("getValue",Null))

for some reason initializing the datepicker (subDP3.Initialize(dp_pt_spn_dob, False) ) in appstart was "lost" , so it s not initialized on focus change .
 
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