ios如何快速与自定义单元中的插座进行交互

Question

nomrally i have one view controller and i add outlets to it. and inside view did load i can change the font of the text view or i can add images to the ui image. but now i have a custom cell like this:

class NumberOfPeopleTableViewCell: UITableViewCell {

    @IBOutlet weak var numberOfPeopleLabel: UILabel!

as you see, i have outlet in that cell, how can i interact with that outlet? there is no view did load function inside the table view cell

Answer 1

You could set the font of the label in your storyboard.

Or you could set the font of the label in awakeFromNib (a method you can override in your cell class).

Or you could set the font of the label in tableView(_:cellForRowAtIndexPath:) (in your table view controller).

Answer 2

You can override the function layoutSubviews

override func layoutSubviews() {
    //do whatever here for your outlets        
}

Answer 3

From what I can gather, the "standard" approach would be, inside your UITableViewController subclass:

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCellWithIdentifier("<Your Id Here>", forIndexPath: indexPath) as! NumberOfPeopleTableViewCell
        let foo = cell.numberOfPeopleLabel // DO STUFF WITH IT
        // Do more stuff here
        return cell
}

OR --

If you want to keep your View Controller code clean of graphics layout-ing / appearance logic (which you should) consider, inside NumberOfPeopleTableViewCell to override func layoutSubviews() .

OR (my favourite) --

You could subclass the UITextView (eg MYCellTextView ) and change the appearance for all of your subclass instances in your app delegate using UIApparence. Like this should work:

MyCellTextView.appearance().font = UIFont(name: "<myFont>", size: 10.0)

You can put the above, for example, in your app delegate. This has the advantage of keeping appearance code in one place and away from view controllers (and generic, for all instances of your custom view).

Answer 4

take a look at awakeFromNib . as the documentation states:

When an object receives an awakeFromNib message, it is guaranteed to have all its outlet instance variables set.

so you can do:

override func awakeFromNib() {
  super.awakeFromNib()

  numberOfPeopleLabel.font = UIFont.systemFontOfSize(15.0) // or whatever font you want to assign
}