B4J Question Application Flow

[JaunLukePicard]

I want to get back into B4A and saw the new B4J developement environment. It looks very promissing.

I am designing an application that will support both Desktop and portable needs. This application would have several Forms and Classes. I am grouping them by function in VisualBasic. For instance. I have a Splash Screen and then the Main Form. The Main form has a class 'clsMain" associated with it.

When the Spash Screen is closed the application launches the Main class which opens the Main Form. Can I do this same type of thing with B4J? Do you have an example?

I use this setup to make it easier to reference code for Forms easier to maintain throughout the application life-cycle. This way unless I have clearly made a Module or Class that has Subs for Functions for multiple Forms/functions the class is specific for set of related Forms.

 

[Erel]

You can create applications with any number of forms in B4J.

Forms are regular objects like any other object. This means that you can create a class for each form or create one class that handles many forms (or module).

Here is the code of a simple program with a splash screen:

'Main module
Sub Process_Globals
   Private fx As JFX
   Private MainForm As Form
   Private t As Timer
End Sub

Sub AppStart (Form1 As Form, Args() As String)
   MainForm = Form1
   MainForm.SetFormStyle("UNDECORATED")
   MainForm.RootPane.Style = "-fx-background-color: blue;"
   MainForm.Show
   t.Initialize("t", 3000)
   t.Enabled = True
End Sub

Sub t_Tick
   t.Enabled = False
   Dim f As Form2
   f.Initialize
   f.Show
   MainForm.Close
End Sub

'Form2 class
Sub Class_Globals
   Private fx As JFX
   Private frm As Form
End Sub

Public Sub Initialize
   frm.Initialize("frm", 500, 500)
End Sub

Public Sub Show
   frm.Show
End Sub

 

[JaunLukePicard]

Thank You Erel Got it.

So as with B4A B4J needs to declare a variable and then initialize the class, module, Form, control, etc. In B4A we use Activities, but those are "Forms" in B4J?

 

[Erel]

Forms are simpler than B4A Activities. In B4A each activity must be in a module of its own and it has its own life cycle.

Form is just a regular object (like StringBuilder or Button).

 

[tcgoh]

Hi,
I'm trying to add a splash screen for my completed project with only 1 main coded module. With your example above the first splash screen have to be the main module.
How do I move my completed coded module to "Form2 class" ?

Thanks

 

[Erel]

With your example above the first splash screen have to be the main module.

No. You can show any form you like. MainForm is not special. It doesn't matter where the form is declared.

 

[tcgoh]

Thanks Erel. I have sort it out.

Regards