Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
566 views
in Technique[技术] by (71.8m points)

ios - Is it possible to have differing heights in a UITableView Cell when I use several different ways of displaying the cell?

I've spent several days trying to figure this out, but there doesn't seem to be a solution. I have a very basic UITableView cell with two labels in it. One of them will be one line, the second will be multiline. The second one will be varying in heights. Here is an example of what I'm trying to produce ( UIStackViews inside of UITableViewCells ) :

enter image description here

From reading hundreds of SO posts, hundreds of blogs, scouring the Apple Developer sites, there seems to be an unlimited amount of ways one could write this. After having experimented with hundreds of different ways, I still can't manage to display the text like so. I think some of the trouble comes from the fact that I'm using 3 different UITableView cell variations in one UITableView.

Here is my code from my latest attempt cellForRowAtIndexPath :

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

    var cell : UITableViewCell!

    let (parent, isParentCell) = self.findParent(indexPath.row)

    if !isParentCell {

        let categories = ["words", "translation","commentary"]

        if categories[parent] == "words" {

            cell = tableView.dequeueReusableCellWithIdentifier(childWordsCellIdentifier, forIndexPath: indexPath) as UITableViewCell

            // Reset content
            for subview in cell.contentView.subviews {
                subview.removeFromSuperview()
            }
            cell.prepareForReuse()


            let words                   = self.page.valueForKey("words")!.allObjects as! [Word]
            let wordsInOrder            = words.sort({Int($0.order!) < Int($1.order!) })
            let word                    = wordsInOrder[indexPath.row - 1]

            let labelWidth              = (self.view.frame.width - 80) / 2


            let wordLabel               = UILabel(frame: CGRectZero)
            wordLabel.text              = word.valueForKey("sanskrit") as? String
            wordLabel.font              = UIFont(name: "EuphemiaUCAS-Bold", size: 16)
            wordLabel.numberOfLines     = 0
            wordLabel.translatesAutoresizingMaskIntoConstraints = false
            wordLabel.layer.borderColor = UIColor.greenColor().CGColor
            wordLabel.layer.borderWidth = 1.0
            let widthWordConstraint = wordLabel.widthAnchor.constraintEqualToConstant(labelWidth)
            widthWordConstraint.priority = 300
            widthWordConstraint.active = true

            let englishWordLabel           = UILabel(frame: CGRectZero)
            englishWordLabel.text          = "Foobar don't want to play my game with my anymore."
            englishWordLabel.font          = UIFont(name: "STHeitiTC-Light", size: 16)
            englishWordLabel.numberOfLines = 0
            englishWordLabel.preferredMaxLayoutWidth = labelWidth
            englishWordLabel.translatesAutoresizingMaskIntoConstraints = false
            let englishWordConstraint = englishWordLabel.widthAnchor.constraintEqualToConstant(labelWidth)
            englishWordConstraint.priority = 300
            englishWordConstraint.active = true
            englishWordLabel.layer.borderColor = UIColor.blueColor().CGColor
            englishWordLabel.layer.borderWidth = 1.0

            let stackView = UIStackView()
            stackView.axis = .Horizontal
            stackView.distribution = .FillProportionally
            stackView.alignment = .FirstBaseline
            stackView.spacing = 15
            stackView.layoutMargins = UIEdgeInsets(top: 0, left: 20, bottom: 0, right: 20)
            stackView.layoutMarginsRelativeArrangement = true

            stackView.addArrangedSubview(wordLabel)
            stackView.addArrangedSubview(englishWordLabel)

            stackView.translatesAutoresizingMaskIntoConstraints = false

            englishWordLabel.topAnchor.constraintEqualToAnchor(stackView.topAnchor).active = true
            englishWordLabel.bottomAnchor.constraintEqualToAnchor(stackView.bottomAnchor).active = true


            cell.contentView.addSubview(stackView)

            cell.contentView.layoutIfNeeded()


        } else {

            cell = tableView.dequeueReusableCellWithIdentifier(childCellIdentifier, forIndexPath: indexPath) as UITableViewCell

            // Reset content
            cell.textLabel!.text = ""
            for subview in cell.contentView.subviews {
                subview.removeFromSuperview()
            }
            cell.prepareForReuse()

            cell.textLabel!.text        = self.page.valueForKey(categories[parent]) as? String
            cell.textLabel!.textColor   = UIColor(red: 35/255.0, green: 31/255.0, blue: 32/255.0, alpha: 1.0)
            cell.textLabel!.font        = UIFont(name: "STHeitiTC-Light", size: 16)
        }
    }
    else {
        // Parent
        cell = tableView.dequeueReusableCellWithIdentifier(parentCellIdentifier, forIndexPath: indexPath)
        cell.textLabel!.text        = self.dataSource[parent].title
        cell.textLabel!.textColor   = UIColor(red: 66/255.0, green: 116/255.0, blue: 185/255.0, alpha: 1.0)
        cell.textLabel!.font        = UIFont(name: "STHeitiTC-Light", size: 20)
    }

    cell.selectionStyle                                       = .None
    cell.textLabel!.translatesAutoresizingMaskIntoConstraints = false
    cell.textLabel!.numberOfLines                             = 0
    cell.textLabel!.lineBreakMode = .ByWordWrapping

    return cell
}

Which produces this :

enter image description here

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

I suggest you don't use stack view for this . Just take custom cell with Label according to your requirement and cell will resize automatically according to Label text size.

Check , here i have attached demo.

UITableview cell Autoresize According to textsize

Output :-

enter image description here

In viewdidload

super.viewDidLoad()
        self.tblView.estimatedRowHeight = 100;
        self.tblView.rowHeight = UITableViewAutomaticDimension;
        self.tblView.setNeedsLayout()
        self.tblView.layoutIfNeeded()

Dont forget to set Numberoflines=0 of UILabel property.

enter image description here

Edit :- If you need step by step guide regarding how to set constrain to UILabel ,

check this link ,

Adjust UILabel height depending on the text

Edit :- Here i have take 2 label in cell according to your above image. Just set constrain like this .

enter image description here

Label 1 :- Top , Leading , (Height and width According to your requirement)

Label 2 :- Top , Bottom , Leading from Label 1, Trailing from Superview


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...