我想将自定义类中的textField文本传递给ViewController并在点击DatePicker的BarButtonItem时将其填充到数组中。我使用回调作为完成处理程序,但它捕获了EXC-BAD-ACCESS。是什么导致此错误,以及如何将文本传递给ViewController?
- 自定义的textField类
class HourDatePicker: UITextField {
var datePicker = UIDatePicker()
override init(frame: CGRect) {
super.init(frame: frame)
commominit()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
commominit()
}
func commominit(){
text = ""
datePicker.datePickerMode = .dateAndTime
datePicker.minuteInterval = 30
datePicker.locale = Locale(identifier: "ja")
datePicker.addTarget(self, action: #selector(setText), for: .valueChanged)
setText()
inputView = datePicker
inputAccessoryView = customPicker()
}
@objc func setText(){
let f = DateFormatter()
f.dateStyle = .full
f.timeStyle = .short
f.locale = Locale(identifier: "ja")
textColor = .black
text = "\(f.string(from: datePicker.date))"
}
private func customPicker() -> UIToolbar {
let toolbar = UIToolbar()
toolbar.frame = CGRect(x: 0, y: 0, width: self.frame.size.width, height: 40)
let space = UIBarButtonItem(barButtonSystemItem: .fixedSpace, target: self, action: nil)
space.width = 100
let flexSpaceItem = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: self, action: nil)
let todayButtonItem = UIBarButtonItem(title: "today", style: .done, target: self, action: #selector(setToday))
let selectButtonItem = UIBarButtonItem(title: "select", style: .done, target: self, action: #selector(tellCalenderText))
let toolbarItem = [space, flexSpaceItem, todayButtonItem, selectButtonItem]
toolbar.setItems(toolbarItem, animated: true)
}
return toolbar
}
@objc func tellCalenderText(completion: ((_ titleText: String) -> Void)){
//I want to pass text here.
if text != "" {
guard let titleText = text else {return}
completion(titleText)
} else {
return
}
}
- ViewController
class Calender1ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
private let selectDate = HourDatePicker()
private var keepDate: [String] = []
@IBOutlet weak var timeTextView: UITextView!
@IBOutlet weak var dateText: HourDatePicker!
@IBOutlet weak var calenderTableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
self.calenderTableView.delegate = self
self.calenderTableView.dataSource = self
selectDate.tellCalenderText {[weak self] (titleText) in
self?.bringDate(title: titleText)
}
}
func bringDate(title: String){
print("title: \(title)")
self.keepDate.append(title)
timeTextView.text.append(contentsOf: "\(title)\n")
}
谢谢。