Question

我在TableView单元格中添加了UIStackView。为UIStackView（MultipleChoice.swift）创建了一个自定义类，其中包含一个用于添加新选项的按钮。在表格视图单元格中，当我单击添加选项按钮时，选项增加我想要消耗表格视图单元格的高度。由于我的添加选项按钮功能在MultipleChoice.swift内，如何更新单元格的高度。这是表视图控制器 initial cell When add button is pressed new option is added but the cell height is small to fit the newly added option 表视图控制器

    import UIKit

class ShowTableViewController: UITableViewController {
    //MARK Properties
    var items = [UIStackView]()

    override func viewDidLoad() {
        super.viewDidLoad()

        loadSample()

        tableView.estimatedRowHeight = 200
        tableView.rowHeight = UITableViewAutomaticDimension

        // Uncomment the following line to preserve selection between presentations
        // self.clearsSelectionOnViewWillAppear = false

        // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
        // self.navigationItem.rightBarButtonItem = self.editButtonItem
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    // MARK: - Table view data source

    override func numberOfSections(in tableView: UITableView) -> Int {
        // #warning Incomplete implementation, return the number of sections
        return 1
    }

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        // #warning Incomplete implementation, return the number of rows
        return items.count
    }

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

        // Table view cells are reused and should be dequeued using a cell identifier.
        let cellIdentifier = "EntityTableViewCell"

        guard let cell = tableView.dequeueReusableCell(withIdentifier: cellIdentifier, for: indexPath) as? EntityTableViewCell  else {
            fatalError("The dequeued cell is not an instance of MealTableViewCell.")
        }

        // Fetches the appropriate meal for the data source layout.
        let item = items[indexPath.row]
        cell.heightAnchor.constraint(equalToConstant: item.frame.height).isActive = true
        cell.cellStack.addArrangedSubview(item)
        return cell
    }


    func loadSample(){
        let item1 = ShortAnswer()
        let item2 = LongAnswer()
        let item3 = MultipleChoice()
        items += [item3]
    }
}

这是自定义堆栈视图类，此类添加按钮功能被称为func addnewOption(button: UIButton)

import UIKit

@IBDesignable class MultipleChoice: UIStackView {
    //MARK: Properties
    var buttonTitle: String = "ADD"
    var optionsList = [UIStackView]()
    let options = QuestionsOptionsControl()
    let circleWidth:CGFloat = 31.5
    let circleHeight:CGFloat = 31.5
    //MARK : Initilazation
    override init(frame: CGRect) {
        super.init(frame: frame)
        self.layer.borderColor = UIColor.blue.cgColor
        self.spacing = 8
        self.axis = .vertical
        setItems()
    }

    required init(coder: NSCoder) {
        super.init(coder: coder)
        self.layer.borderColor = UIColor.blue.cgColor
        self.spacing = 8
        self.axis = .vertical
        setItems()
        //fatalError("init(coder:) has not been implemented")
    }


    func deleteOption(option: UIButton){
        removeArrangedSubview(option.superview!)
        option.superview!.removeFromSuperview()
        let items = arrangedSubviews
        let count = items.count
        if count == 6 {
            if let option = items[2] as? UIStackView{
                if  let hideDeleteButton = option.arrangedSubviews[2] as? UIButton{
                    hideDeleteButton.isHidden = true
                }
            }
        }
    }
    func addnewOption(button: UIButton){

        let bundle = Bundle(for: type(of: self))
        let multiChoiceNormal = UIImage(named:"multiChoiceNormal", in: bundle, compatibleWith: self.traitCollection)
        let delete = UIImage(named:"trashNormal", in: bundle, compatibleWith: self.traitCollection)

        let optionStack = UIStackView()

        let circle = UIImageView()
        circle.image = multiChoiceNormal
        circle.widthAnchor.constraint(equalToConstant: circleWidth).isActive = true
        circle.heightAnchor.constraint(equalToConstant: circleHeight).isActive = true

        let shortAnswer = UITextField()
        shortAnswer.placeholder = "Short answer text "

        let deleteButton = UIButton()
        deleteButton.setImage(delete, for: .normal)
        deleteButton.widthAnchor.constraint(equalToConstant: circleWidth).isActive = true
        deleteButton.addTarget(self, action: #selector(MultipleChoice.deleteOption(option:)), for: .touchUpInside)
        optionStack.addArrangedSubview(circle)
        optionStack.addArrangedSubview(shortAnswer)
        optionStack.addArrangedSubview(deleteButton)
        optionsList.append(optionStack)
        let itemsTotal = arrangedSubviews
        let index = (itemsTotal.count - 3)
        //addArrangedSubview(optionStack)
        insertArrangedSubview(optionStack, at: index)
        let items = arrangedSubviews
        let count = items.count
        if count == 6 {
            deleteButton.isHidden = true
        }
        else if count > 6{
            if let option = items[2] as? UIStackView{
                if  let hideDeleteButton = option.arrangedSubviews[2] as? UIButton{
                    hideDeleteButton.isHidden = false
                }
            }
        }

    }

    //MARK: Private
    private func setItems() {
        backgroundColor = UIColor.red

        //seprator
        let separator = UIView()
        separator.heightAnchor.constraint(equalToConstant: 1).isActive = true
        separator.backgroundColor = .black

        let newseparator = UIView()
        newseparator.heightAnchor.constraint(equalToConstant: 1).isActive = true
        newseparator.backgroundColor = .black
        //newseparator.widthAnchor.constraint(equalTo: separator.widthAnchor, multiplier: 0.6).isActive = true
        let question = UITextField()
        question.placeholder = "Question"
        addArrangedSubview(question)
        // newseparator.widthAnchor.constraint(equalTo: question.widthAnchor, multiplier: 1.6).isActive = true
        addArrangedSubview(newseparator)

        let addNewOptionButton = UIButton()
        addNewOptionButton.heightAnchor.constraint(equalToConstant: 30).isActive = true
        //addNewOptionButton.setImage(multiChoiceHighlighted, for: .normal)
        addNewOptionButton.setTitle(buttonTitle , for: .normal)
        addNewOptionButton.widthAnchor.constraint(equalToConstant: 80).isActive = true
        addNewOptionButton.backgroundColor = UIColor.blue
        addNewOptionButton.addTarget(self, action: #selector(MultipleChoice.addnewOption(button:)), for: .touchUpInside)
        addArrangedSubview(addNewOptionButton)
        //seprator
        addArrangedSubview(separator)
        addArrangedSubview(options)
        addnewOption(button: addNewOptionButton)

    }

    func setButtonTitle(title: String){
        let items = arrangedSubviews
        let index = items.count
        guard let button = items[index-3] as? UIButton else{
            return
        }
        button.setTitle(title, for: .normal)

    }
    func hideOptions(){
        let items = arrangedSubviews
        let index = items.count
        guard let option = items[index-1] as? UIStackView else{
            return
        }
        option.isHidden = true
        items[0].isHidden = true
    }
}

Answer 1

你可以使用：

foreach ($obj['results']['overall']['tournaments'] as $tournament) {
  echo 'Tournament: ' . $tournament['name'] . '<br />';
  foreach ($tournament['rows'] as $row) {
    echo 'Team: #' . $row['team']['id'] . ' ' . $row['team']['name'] . ' (' . $row['team']['image_id'] . ')' . '<br />';
  }
}

或者如果你想要你添加那个＆＃34;添加＆＃34;按钮作为行的页脚。

swift：TableView单元格大小随运行时间而变化

1 个答案: