B4J Question Classes - How to use a custom view

MarkusR

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• Sep 15, 2018

• #2

a typical custom view appear in designer at menu add view / custom view / color picker.
did you see something there if you open the designer for your main layout?

 

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saunwin

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• Sep 15, 2018

• #3

Thanks for the reply Markus, Customview is greyed out - so I guess i havn't done something right ?

 

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Cableguy

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• Sep 15, 2018

• #4

Depending on what B4J version or the way it was implemented, your custom view may or may not have Visual Designer support.
In the first case, you need to add it by code, but if it has designer support, then it will show in the designer views list Under customview.
The fact that you say it's grayed out, to me it says it has been used (in the custom view demo maybe), but has not been Added to the current project.
Make sure you have selected the CustomView in your libs tab.

 

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saunwin

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• Sep 15, 2018

• #5

Thanks cableguy. The customview (colorpalette) doesn't appear in the library list. I have set the path and unpacked the files into that folder, added the files to the project, but customview is still greyed out ;(

 

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DonManfred

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• Sep 15, 2018

• #6

You are still not providing any useful informations for us to help you.
What exactly is the customview? URL
Where is your testproject which shows the problem?

 

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saunwin

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• Sep 15, 2018

• #7

Hi DonManfred. Thanks for the reply. The class i want to use is

https://www.b4x.com/android/forum/threads/class-color-picker-for-all-colors.89704/#content
Customview just remains greyed out in designer.

I'll try and create a test project

 

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saunwin

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• Sep 15, 2018

• #8

OK I think I've done that correctly.
Please see attached

 

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• test_project.zip

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DonManfred

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• Sep 15, 2018

• #9

ColorPalette is a Class which you need to declare and use in your Activity. It is NOT a CustomView.

B4X:

Sub AppStart (Form1 As Form, Args() As String)
    MainForm = Form1
    MainForm.RootPane.LoadLayout("PC_app") 'Load the layout file.
    MainForm.Show
   
    Dim colpal As ColorPalette
    colpal.Initialize(Me,"Main","mycol")
    colpal.GetColor
End Sub
Sub mycol_Result(selectedcolor As Paint,success As Boolean)
    Log($"mycol_Result(${selectedcolor}, ${success})"$)
End Sub

mycol_Result(0x2448daff, true)

Click to expand...

 

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saunwin

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• Sep 15, 2018

• #10

WOW ! - big thanks from a newbie DonManfred. My understanding increases.

 

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DonManfred

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• Sep 16, 2018

• #11

saunwin said:

big thanks from a newbie

Click to expand...

LOOOOOL!!!!!

You are member since 2011.

 

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Cableguy

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• Sep 16, 2018

• #12

DonManfred said:

LOOOOOL!!!!!

You are member since 2011.

Click to expand...

Even a mechanical engineer that never used a paintbrush, but learks at painting forums for years, will be a newbie if he doesn't get his hands dirty!
B4J was out for about 2 years before I decided to give it a go… It's been about 4 years that I have not touched much of android, so Iwill have newbie questions once I return to it...

 

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