Android Question Click in view - CLVNested

Erel

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• Apr 26, 2020

• #2

CLVItem_ItemClick event is raised whenever an internal item is clicked.

You can see how it is handled in tpc_OnInterceptTouchEvent. It should be simple to pass the X offset and find the correct view based onit.

 

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Lucas Eduardo

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• Apr 27, 2020

• #3

Sorry, i don't how to do this. Can you give an example?

Thank you.

 

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Erel

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• Apr 27, 2020

• #4

Change CallSub2 to CallSub3 and add the X parameter to the event.

 

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Lucas Eduardo

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• Apr 27, 2020

• #5

Erel said:

Change CallSub2 to CallSub3 and add the X parameter to the event.

Click to expand...

B4X:

CallSub3(ScrollingCLV, "Panel" & "ClickHandler", ScrollingCLV.GetRawListItem(innerIndex).Panel, X)

Thank you for your reply, i followed your suggest and i get this error
java.lang.Exception: Sub panelclickhandler signature does not match expected signature.

What could be?

 

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DonManfred

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• Apr 27, 2020

• #6

Lucas Eduardo said:

java.lang.Exception: Sub panelclickhandler signature does not match expected signature.

Click to expand...

have you added the new parameter to panelclickhandler?

 

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Lucas Eduardo

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• Apr 27, 2020

• #7

I don't think so, i don't undestand where add this new parameter to panelclickhandler. Can you show me?

i tryed this, but gave me the same error

B4X:

Sub CLVItem_ItemClick (Index As Int, Value As Object, test As Int)
    Log("test: "&test)
    Log("Value: "&Value)
    Log("Index: "&Index)
End Sub

Thank you.

 

Last edited: Apr 27, 2020

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Erel

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• Apr 28, 2020

• #8

You are correct. My previous suggestion will not work.
You can instead store the offset in a global variable and get it inside the event sub.

B4X:

Sub CLVItem_ItemClick (Index As Int, Value As Object)
 Dim offset As Int = Nested.ClickedOffset

 

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Lucas Eduardo

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• Apr 28, 2020

• #9

Erel said:

You can instead store the offset in a global variable and get it inside the event sub.

Click to expand...

I did it but i don't know how to get the correct view.
i tryed this but gave me an error.

B4X:

Dim lbl As Label = clvItem.GetPanel(Index).GetView(offset)

and

B4X:

Dim lbl As Label = clvItem.GetPanel(clvItem.FindIndexFromOffset(offset)).GetView(0)

Probably not the correct way to get the view, can you show me the correct way?

Thank you.

 

Last edited: Apr 28, 2020

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Erel

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• Apr 28, 2020

• #10

Assuming that your items layouts are not too complicated it should be quite simple. Something like:

B4X:

Dim pnl As B4XView = clvItem.GetPanel(Index)
For i = 0 To pnl.NumberOfViews - 1
Dim v As B4XView = pnl.GetView(i)
if v.Left <= offset And v.Left + v.Width >= offset Then
  Log("This view")
End If

 

Last edited: Apr 28, 2020

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Lucas Eduardo

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• Apr 28, 2020

• #11

Erel said:

clvItem.NumberOfViews

Click to expand...

Is it the correct way to get total of NumberOfViews?

B4X:

Public Sub getNumberOfViews As Int
    Return CLV.GetPanel(0).NumberOfViews
End Sub

or should be this?

B4X:

For i = 0 To clvItem.GetPanel(0).NumberOfViews - 1

 

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Erel

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• Apr 28, 2020

• #12

I've fixed my code. It should be pnl.NumberOfViews.

 

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Lucas Eduardo

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• Apr 28, 2020

• #13

I'm never getting the Log("This view")
In my layout i just have two labels.

 

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Erel

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• Apr 28, 2020

• #14

Debug it. Put a breakpoint and check the offset and the views.

 

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Lucas Eduardo

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• Apr 28, 2020

• #15

pnl.NumberOfViews returns 0. Is it correct?

 

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Erel

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• Apr 30, 2020

• #16

It is correct. If it is not what you expect then you did something wrong.

 

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