CODEWITHSUNDEEP
iosswiftuitableview
Tonespy
Tonespy

Reputation: 3387

Adding Margin to UITableViewCell

I am trying to achieve a view I mocked out on sketch. I've replicated it on Android cause I'm really good on that platform. I'm good on iOS, but the UI is kind of my weak point. The Image

I extended a UIViewController and on my StoryBoard have the top to be a view and the bottom a tableview. The problem I'm having is centering the UITableViewCell to look like that in the app itself. Below is the solution I've tried. But, it just squeeze it all to the top. NB. I use UIView to draw those Tiny Lines in the UITableViewCell

func configureTableView() {
    //First One I tried then later commented it out
    loanStateTable.rowHeight = UITableViewAutomaticDimension
    loanStateTable.scrollToNearestSelectedRowAtScrollPosition(UITableViewScrollPosition.Middle, animated: true)

    //Second One I tried
    var edgeInset = UIEdgeInsets(top: 16, left: 16, bottom: 0, right: 16)
    loanStateTable.contentInset = edgeInset
}

And the storyboard view UITableViewCell

Any help would be appreciated. Thanks

Output:

OutPut Image

Upvotes: 6

Views: 22202

Answers (3)

LuckyStarr
LuckyStarr

Reputation: 1500

From your screenshots it seems that you have a problem with the auto layout system and dynamic cell. For this is suggest to read this very good answer on stack overflow that explain how to build dynamic cells with auto layout. An important thing to consider is that creating views with auto layout is very fast and intuitive but it expensive from a performance point of view. This problem is accentuated for the UITableView where the scroll can result not smoothly. If you have simple cell (only few views and a view hierarchy with few levels) it can be ok but to the auto layout manager I suggest to:

  • specify a value for the property estimatedRowHeight if all the cells have the same height
  • implement the method tableView(_:estimatedHeightForRowAtIndexPath:) of the UITableViewDelegate if the cells have different heights.

Regarding the problem with margins I suggest to nest a UIView inside the contentView of the cell and use it as container for all the other views of the cell. In this way you can add left and right margins between this view container and the contentView so that you can center it.

Upvotes: 0

ezcoding
ezcoding

Reputation: 2994

Leave everything as it is. Don't try to inset your whole TableView. Create a container View inside your TableViewCell instead:

enter image description here

Set the row height:

enter image description here

Also in code:

func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
    return 160.0
}

Specify the right distance to the edges:

enter image description here

Now add the elements and specify the constraints as well:

enter image description here enter image description here enter image description here enter image description here

Don't forget to set the cellIdentifier:

enter image description here

The result in the simulator:

enter image description here

If you want to look at it under the hood: I've uploaded it as github project

Upvotes: 24

hasan
hasan

Reputation: 24205

I don't know if I understood your question. I thought that your question was to centre vertically those two rows on screen. my code do that.

Approach:

I usually play this by adding extra cell(s) at the start and/or end of the UITableView

#define cell_height 100

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return array.count + 1;
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    if (indexPath.row > 0)
        return cell_height;
    else
    {
        CGFloat tableHeight = tableview.frame.size.height;
        CGFloat contentHeight = array.count * cell_height;
        CGFloat whiteAreaHeight = tableHeight - contentHeight;
        if (whiteAreaHeight > 0)
            return whiteAreaHeight/2.0;
        else
            return 0;
    }
}

- (UITableViewCell *)tableView:(nonnull UITableView *)tableView cellForRowAtIndexPath:(nonnull NSIndexPath *)indexPath
{
    if (indexPath.row > 0)
    {
       NSInteger realArrayIndex = indexPath.row - 1;
       // your existing code here
       return cell;
    }
    else
    {
       //return empty cell. add it to the storyboard with different identifier and get it.
    }
}

I hope that helps!

Upvotes: 1

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