B4J Question Application Flow

J

JaunLukePicard

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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.
 
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Erel

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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:
B4X: 
'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

B4X: 
'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
 
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J

JaunLukePicard

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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?
 
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tcgoh

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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
 
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