iOS Question An example of ScrollView in b4i

tufanv

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• Mar 13, 2017

• #2

BerlinCoder said:

Hi,

It seems scrollview in b4i and b4a are difference. So, can anybody give me an example how to work with b4i scrollview in order to load panels inside of the scrollview?

Click to expand...

They are not different. Both use scroll.panel.addview to add views. Only difference i can remember is for b4i we use scroll.contentheight and contentwidth instead of scroll.panel.width and scroll.panel.height.

 

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Erel

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• Mar 14, 2017

• #3

You can find many threads related to B4i ScrollView: https://www.b4x.com/search?query=b4i+ScrollView

 

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BerlinCoder

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• Mar 14, 2017

• #4

I used similar approach like b4a : 1 - put a panel on a layout 2- set scrollview on it and try to add panels on at run-time
Bu the now the problem is the transparency of scroll-view or panel

please take a look at following snippet codes

B4X:

    cv1.Initialize(Me,"scroll",100%x)
    cv1.Clear
    pnlsv.AddView(cv1.AsView,0,0,100%x,100%y)
    pnlsv.Color=Colors.Transparent

B4X:

                Dim Pnl_Qeustion As Panel
                Pnl_Qeustion.Initialize("")
                cv1.Add(Pnl_Qeustion,150dip,"")
                Pnl_Qeustion.LoadLayout("Template_Panel_Question_History_English")

The result is still with a background color although I changed the Template_Panel_Question_History_English to transparent color , .. .. In b4a it works!, But in b4i it does not work!

 

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Erel

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• Mar 15, 2017

• #5

Don't add views programmatically. It is more complicated and you need to handle the resize event.

Use the designer.
CustomListView is a custom view. You can add it with the designer.

 

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BerlinCoder

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• Mar 15, 2017

• #6

Erel as I said my problem now is transparency.....

 

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Erel

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• Mar 15, 2017

• #7

The first step is to build it correctly. If you still unable to solve it then please upload the project.

 

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BerlinCoder

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• Mar 15, 2017

• #8

Thanks you solution seems works. I have a little bit problem with transparency of the first view ( only this one has a black background!). If I could not I will send it to you.

 

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Erel

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• Mar 16, 2017

• #9

BerlinCoder said:

If I could not I will send it to you.

Click to expand...

You can prepare a small project and upload it to the forum.

 

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BerlinCoder

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• Mar 17, 2017

• #10

Yeah, I have attached the module. I must now I see a black background only for the first view on my simulator iPhone SE. But, for the rest of view the background is transparent.

 

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• pageHistoryEnglish.bas

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Erel

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• Mar 19, 2017

• #11

You need to create a small project and upload it (File - Export as zip).

 

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ilan

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• Mar 19, 2017

• #12

Try to change the scrollview.panel color also to transparent. But as erel already mentioned the best way is to upload a small example like this we can know what u r trying to do and if u r doing something wrong.

 

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