Why adding subView to tableViewCell is added multiple times?

Question

I want to add custom subView inside tableViewCell. Basically every time i click on the image inside cell. it will display custom subView with label on it. The link to my project is here

The problem is when i click on the specific cell (0) for example. It displays (0) value but it also display (0) value on indexPath #2. The same goes for when i click on cell (1), it will also display (1) value on indexPath #3. And the pattern goes by (0-2) and (1-3)

I have heard that people are suggesting to use prepareForReuse method, but no luck so far.

I would welcome any ideas and help. Thank you.

score 0 · Answer 1 · answered Feb 19 '19 at 16:01

0

You need ro clear the cell as they are deququed

let subview = TagBox(frame: CGRect(x: self.view.frame.width/2, y: self.view.frame.height/2, width: 100, height: 30), boxName: label)
subview.backgroundColor = UIColor.black
subview.tag = 120

cell.contentView.subviews.forEach {
    if $0.tag == 120 { 
        $0.removeFromSuperview()
    } 
}

Or inside the cell

override func prepareForReuse() {
    super.prepareForReuse()
    self.contentView.subviews.forEach {
        if $0.tag == 120 {
            $0.removeFromSuperview()
        }
    }
}

answered Feb 19 '19 at 16:01

Shehata Gamal

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When is the cell dequeued? @Sh_Khan – Giorgio Fasolini Feb 19 '19 at 16:16
when you scroll – Shehata Gamal Feb 19 '19 at 16:21
Your code removes every subView when scrolling. Is there any way to keep clicked ones stay visible? @Sh_Khan – Giorgio Fasolini Feb 19 '19 at 16:31
you need to save this info inside the model of every item in the list and reflect that in `cellForRowAt` – Shehata Gamal Feb 19 '19 at 16:34
Would you mind explaining it a little bit more specific on how do i do that? Thanks @Sh_Khan – Giorgio Fasolini Feb 20 '19 at 01:54

Why adding subView to tableViewCell is added multiple times?

1 Answers1