Question

有谁知道如何更改搜索栏的输入键盘类型？代码

searchController.searchBar.inputView = input

不像文本字段那样工作。我已经读过searchBar的子视图是一个文本字段，但我不知道如何访问该子视图来更改inputView。

Answer 1

我认为你想要显示不同于标准的键盘，确保您已将委托分配给键盘。

class ViewController: UIViewController, UISearchBarDelegate, KeyboardDelegate
{
    @IBOutlet weak var searchBar: UISearchBar!

    override func viewDidLoad() {
 let keyboardView = KeyboardView(frame: CGRect(x: 0, y: 0, width: 375, height: 165))
        keyboardView.delegate = self
        let searchTextField = searchBar.value(forKey: "_searchField") as! UITextField
        searchTextField.inputView = keyboardView
    }

    func keyWasTapped(text: String) {
        searchBar.text = text
    }
}

我的自定义键盘类

protocol KeyboardDelegate: class {
    func keyWasTapped(text: String)
}

class KeyboardView: UIView {


    // This variable will be set as the view controller so that
    // the keyboard can send messages to the view controller.
    weak var delegate: KeyboardDelegate?


    // MARK:- keyboard initialization
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        initializeSubviews()
    }

    override init(frame: CGRect) {
        super.init(frame: frame)
        initializeSubviews()
    }

    func initializeSubviews() {
        let xibFileName = "KeyboardView" // xib extention not included
        let view = Bundle.main.loadNibNamed(xibFileName, owner: self, options: nil)?[0] as! UIView
        self.addSubview(view)
        view.frame = self.bounds
    }

    // MARK:- Button actions from .xib file    
    @IBAction func keyTapped(_ sender: UIButton) {
        // When a button is tapped, send that information to the
        // delegate (ie, the view controller)
        self.delegate?.keyWasTapped(text: sender.titleLabel!.text!) // could alternatively send a tag value
    }

}

Answer 2

你必须这样访问：

if let searchBarTxtField = searchController.searchBar.valueForKey("_searchField") as UITextField {
    searchBarTxtField.inputView = input
}

UIsearchBar输入键盘类型

2 个答案: