如何将UICollectionView添加到inputAccessoryView

Question

我想将UICollectionView添加到inputAccessoryView以便滚动列表。

override var inputAccessoryView: UIView? {
    let customView = UIView(frame: CGRect(x: 0, y: 0, width: 10, height: 80))
    customView.backgroundColor = UIColor.red
    return customView
}

Answer 1

要将UICollectionView添加为inputAccessoryView，

1。。首先创建一个包含custom UIView的 UICollectionView ，然后向其中添加UICollectionViewDataSource方法。

class CustomView: UIView, UICollectionViewDataSource {
    @IBOutlet weak var collectionView: UICollectionView!

    let words = ["abscind","downwind","headwind","lind","rescind","sind","skinned","tailwind","thin-skinned","tinned","twinned","upwind","whirlwind","wind"]

    override func awakeFromNib() {
        super.awakeFromNib()
        self.collectionView.register(UINib(nibName: "CustomCell", bundle: nil), forCellWithReuseIdentifier: "cell")
    }

    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return self.words.count
    }

    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! CustomCell
        cell.label.text = self.words[indexPath.row]
        return cell
    }
}

class CustomCell: UICollectionViewCell {
    @IBOutlet weak var label: UILabel!
}

2。。根据需要，将以上创建的CustomView的实例添加为inputAccessoryView的{​​{1}}。

UITextField/UITextView

在上面的代码中，您可以根据需要为class ViewController: UIViewController { @IBOutlet weak var textField: UITextField! override func viewDidLoad() { super.viewDidLoad() if let customView = Bundle.main.loadNibNamed("CustomView", owner: self, options: nil)?.first as? CustomView { self.textField.inputAccessoryView = customView } } } 配置数据。