UIView is overlapping / creating again in cellForRowAtIndexPath

Question

I have

UITableViewCell

that contains

UIView

(lets call it

CPView

) which is created while

cellForRowAtIndexPath

is called.

CPView

is just a plain coloured view and for every cell its width is different (that's why needed to create in

cellForRowAtIndexPath

).

Problem is

1)The

CPView

's colour gets darker every time cell loads (May be due to every time that cell creates the same view so overlapping effect).

2) The cell overlaps / inherits other cell's

CPView

(we can see this because of light and dark colour of two

CPView

).

How can I prevent cell to recreate if it already exist or creation of this

CPView

again?

Edit

- (void)configureCell:(CreditDebitCell *)cell atIndexPath:(NSIndexPath *)indexPath {



    //other code 



      UIView * CPView;



            if (CPView){



                CPView =nil;

            }

        else

        {



        CPView = [[UIView alloc] initWithFrame:CGRectMake(cell.bounds.origin.x, cell.bounds.origin.y, cell.frame.size.width*[self.percentArray[indexPath.row] floatValue] ,cell.frame.size.height )];

        [CPView setClipsToBounds:YES];

        [CPView setBackgroundColor:[UIColor colorWithRed:107/255.0 green:15/255.0 blue:47/255.0 alpha:0.5]];



        [cell addSubview: CPView];



      }



}

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Answer 1

The issue here is reuse of the cells - and therefore you get multiple views added to your cell view.

You can:

-remove subview -check if subview exists and do/don't do anything.

You can check if the subview is there by going through subviews:

for (UIView *v in cell.contentView.subview) {
    if ([v isKindOfClass:[CPView class]]) {
        // remove or flag that it exists
    }
}

But I think that you should handle this in your cell - not your view controller that implements table view delegate. Better tell cell to use some view/hide some view based on some kind of logic then to do that inside cellForRowAtIndexPath

UIView is overlapping / creating again in cellForRowAtIndexPath

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