CODEWITHSUNDEEP
iosswifttableview
user987654
user987654

Reputation: 19

Not able to create custom view

I wanted to create a custom view. So I designed my view like so..it's called TagResolutionView.xib

This is how I designed my view

And the TagResolutionView.swift file for that looks like this

import UIKit

@IBDesignable class TagResolutionView: UIView {

    @IBOutlet var tagResolutionView: UIView!

    @IBOutlet var tableview: UITableView!

    required init?(coder: NSCoder) {
        super.init(coder: coder)
        tableview = UITableView()

    }
    override init(frame: CGRect) {
          tableview = UITableView()
        super.init(frame: frame)
      }

    override func awakeFromNib() {
        super.awakeFromNib()
    }

       @IBOutlet weak var delegate: UITableViewDelegate? {
           get {
               return tableview.delegate
           }
           set {
               tableview.delegate = newValue
           }
       }

       @IBOutlet weak var dataSource: UITableViewDataSource? {
           get {
               return tableview.dataSource
           }
           set {
               tableview.dataSource = newValue
           }
       }

    func registerClass(cellClass: AnyClass?, forCellReuseIdentifier identifier: String) {
        tableview.register(cellClass, forCellReuseIdentifier: "cellClass")
    }

    func dequeueReusableCellWithIdentifier(identifier: String) -> UITableViewCell? {
        return tableview.dequeueReusableCell(withIdentifier: identifier)
    }
    override func layoutSubviews() {
        super.layoutSubviews()
        tableview.frame = self.bounds
        self.addSubview(tableview)
    }

}

This is how I inserted the view in my main viewcontroller where I want the custom view to appear..

This is the view

This is how I configured it in the viewcontroller..

In the viewDidLoad..

    stdProcedViewHeight.constant = 533 //Since the view I took above (as given in the pic) is less than the height of the actual TagResolutionView.xib, I increased its height here programatically.
    standardsProceduresView.delegate = self
    standardsProceduresView.dataSource = self



standardsProceduresView.registerClass(cellClass: UpdatingListTableViewCell.self, forCellReuseIdentifier: "cellClass") //I have also made .xib & .swift files for UpdatingListTableViewCell

Also added these methods..

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell: UpdatingListTableViewCell = self.standardsProceduresView.dequeueReusableCellWithIdentifier(identifier: "cellClass") as! UpdatingListTableViewCell
  //  cell.nameLbl.text = "MyName"
    return cell

}

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return 10
}

But I'm not able to get the desired output by doing all of this...All I get is just an empty tableview of the set height(height of 533 here) and nothing else of the design...

Upvotes: 0

Views: 146

Answers (1)

user13639548
user13639548

Reputation:

The reason why your table view doesn't show up is that you're resetting all of its content by calling tableView = UITableView() in your code.

It seems like you're using Storyboards, so assuming you properly connected your UITableView to the property outlet @IBOutlet var tableview: UITableView!, your table view will appear just fine and you don't need to initialize it via code.

I can also see that you're setting the frame of your table view and adding it to the view hierarchy in the layoutSubviews() method. That's definitely not something you need/want to do, first because you're using Storyboards and it means that your table view will already be part of the view hierarchy at this point.

I'd also mention that you should generally never add a subview in the layoutSubviews() method, because this method may be called multiple times and it means your view would be added multiple times to the view hierarchy, which would end up wasting memory.

Upvotes: 1

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