Android Question Set FirstVisibleIndex of CustomListView

AHilberink · Aug 27, 2023

Hi,

Is it possible to set the FirstVisibleIndex without jumping/scrolling to a row? I can only find the get function.
Why? I want to have at least 4 rows left visible from my current row.

Kind regards,
André

Erel · Aug 28, 2023

AHilberink said:
without jumping/scrolling to a row?

This is the same thing. It will bring the item to the top, unless it is close to the end of the list and the item cannot be pushed to the top.

AHilberink · Aug 28, 2023

Erel said:
This is the same thing. It will bring the item to the top, unless it is close to the end of the list and the item cannot be pushed to the top.

Yes, I know. The only problem is, the selected one will be on top. I need the selected one (the one I jump to) in the middle of the list. Of course depending on the begin and the end of the list.

Will this be possible?

Mahares · Aug 28, 2023

AHilberink said:
Will this be possible?

Check the example by the powerhouse and seasoned veteran @William Lancee in this thread. When you scroll it always snaps to the middle of the screen. The example applies to a horizontal xClv, but modifiable to a vertical xClv. Does this example suit you. It may not be exactly what you asked for, but, it might help you some.

How to Determine the Index of the closest Item to the Center of an xClv

How do you determine the index of the closest item to the center of an xClv in Sub xClv_VisibleRangeChanged (FirstIndex As Int, LastIndex As Int) after a scroll is stopped. I am looking for the center item index among the displayed items on the screen whether vertical or horizontal xClv Thank you

www.b4x.com

AHilberink · Aug 28, 2023

Mahares said:
Check the example by the powerhouse and seasoned veteran @William Lancee in this thread. When you scroll it always snaps to the middle of the screen. The example applies to a horizontal xClv, but modifiable to a vertical xClv. Does this example suit you. It may not be exactly what you asked for, but, it might help you some.

How to Determine the Index of the closest Item to the Center of an xClv

How do you determine the index of the closest item to the center of an xClv in Sub xClv_VisibleRangeChanged (FirstIndex As Int, LastIndex As Int) after a scroll is stopped. I am looking for the center item index among the displayed items on the screen whether vertical or horizontal xClv Thank you

www.b4x.com

Hi Mahares,

Thank you. I already saw this thread, but with this the selected row is changed. I only want to change the visible part of the CLV.

Kind regards,
André

Erel · Aug 29, 2023

Jump to Row - 4. It has nothing to do with selection.

Android Question Set FirstVisibleIndex of CustomListView

AHilberink

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Erel

B4X founder

AHilberink

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Mahares

Expert

How to Determine the Index of the closest Item to the Center of an xClv

AHilberink

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How to Determine the Index of the closest Item to the Center of an xClv

Erel

B4X founder

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Android Question Set FirstVisibleIndex of CustomListView

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