B4J Question Hide/Show MainForm

Cableguy

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• Nov 18, 2016

• #2

You Can use the forms alpha prop.

 

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ThRuST

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• Nov 18, 2016

• #3

Very impressive, thanks
Btw I tried to add you to Facebook but I couldn't find you. mind if I add you? my name is Roger Lindfors (rogerlindfors@hotmail.com). I'll delete this line a little later.

 

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Cableguy

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• Nov 18, 2016

• #4

Just sent u a mail

 

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Daestrum

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• Nov 19, 2016

• #5

B4X:

Dim mf as JavaObject = MainForm.RootPane 
mf.RunMethodJO("getScene",Null).RunMethodJO("getWindow",Null).RunMethod("hide",Null)
...

Make sure you have another window open before you call this or app will terminate.
to see the form again, just use MainForm.Show again

 

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ThRuST

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• Nov 19, 2016

• #6

Thank you Daestrum. Do you know if visible property can be used instead because the solution to open a new form in this case means it have the second form minimized and that's not really what I want. I've tried the alpha way but the form turned white at alpha = 0. Cableguy might post an example if we're lucky

 

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Cableguy

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• Nov 19, 2016

• #7

https://www.b4x.com/android/forum/threads/strange-behaviour-in-my-b4x-launcher-v3.73182/

I'm using a transparent form and set alpha animated to show/hide the node(s)

 

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ThRuST

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• Nov 19, 2016

• #8

I changed to TRANSPARENT form but it's just showing a white form when I tried this

B4X:

MainForm.RootPane.SetAlphaAnimated(0, 0)

Please provide your example how you make it work because I'm lost

 

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Cableguy

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• Nov 19, 2016

• #9

Set the background color to transparent, white is default color

 

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ThRuST

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• Nov 19, 2016

• #10

Since I used an AnchorPane in Scene builder 2 I had to do it like this, based on your guidande:

B4X:

Dim MainForm As Form
Dim MainPanel As AnchorPane

MainForm.RootPane.LoadLayout("Form1") 'Load the layout file.
MainForm.SetFormStyle("TRANSPARENT")
MainForm.Show
MainForm.BackColor = fx.Colors.Transparent
MainForm.RootPane.SetAlphaAnimated(0, 0)
MainPanel.Parent.Alpha = 1

Just change the MainPanel.Parent.Alpha to transparent range 0 - 1 (i.e. 0.5 for 50% transparency).
Please note that Form1 is a FXML file.
Many thanks Cableguy. I wouldn't have solved it without your 'hints'

 

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ThRuST

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• Nov 19, 2016

• #11

Btw, the AnchorPane should have the name MainPanel under Properties/Id field in Scene builder 2 for this example to work.
I hope this will help other wizards in this community

 

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