如何使一个完成buttonUIPickerView？ 迅速

当用户点击一个UITextField时，我很难做出一个带有完成button的UIPickerView。 这是我的代码到目前为止。 一切都很好，但是当我点击文本字段，键盘出现，而不是select器。

class ViewController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate { @IBOutlet var textField1: UITextField! let pickerData = ["11", "12", "13"] @IBAction func textButton(sender: AnyObject) { let picker: UIPickerView picker = UIPickerView(frame: CGRectMake(0, 200, view.frame.width, 300)) picker.backgroundColor = .whiteColor() picker.showsSelectionIndicator = true picker.delegate = self picker.dataSource = self let toolBar = UIToolbar() toolBar.barStyle = UIBarStyle.Default toolBar.translucent = true toolBar.tintColor = UIColor(red: 76/255, green: 217/255, blue: 100/255, alpha: 1) toolBar.sizeToFit() let doneButton = UIBarButtonItem(title: "Done", style: UIBarButtonItemStyle.Plain, target: self, action: "donePicker") let spaceButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: nil, action: nil) let cancelButton = UIBarButtonItem(title: "Cancel", style: UIBarButtonItemStyle.Plain, target: self, action: "donePicker") toolBar.setItems([cancelButton, spaceButton, doneButton], animated: false) toolBar.userInteractionEnabled = true textField1.inputView = picker textField1.inputAccessoryView = toolBar } override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int { return 1 } func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int { return pickerData.count } func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? { return pickerData[row] } func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) { textField1.text = pickerData[row] } func donePicker() { textField1.resignFirstResponder() } } 

Answer 1

将此代码添加到您的viewDidLoad()而不是方法

 let picker: UIPickerView picker = UIPickerView(frame: CGRectMake(0, 200, view.frame.width, 300)) picker.backgroundColor = .whiteColor() picker.showsSelectionIndicator = true picker.delegate = self picker.dataSource = self let toolBar = UIToolbar() toolBar.barStyle = UIBarStyle.Default toolBar.translucent = true toolBar.tintColor = UIColor(red: 76/255, green: 217/255, blue: 100/255, alpha: 1) toolBar.sizeToFit() let doneButton = UIBarButtonItem(title: "Done", style: UIBarButtonItemStyle.Plain, target: self, action: "donePicker") let spaceButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: nil, action: nil) let cancelButton = UIBarButtonItem(title: "Cancel", style: UIBarButtonItemStyle.Plain, target: self, action: "donePicker") toolBar.setItems([cancelButton, spaceButton, doneButton], animated: false) toolBar.userInteractionEnabled = true textField1.inputView = picker textField1.inputAccessoryView = toolBar 

Answer 2

人们似乎在这里用其他的代码来问VBaarathi问的问题

在Swift3中

 let doneButton = UIBarButtonItem(title: "Done", style: UIBarButtonItemStyle.plain, target: self, action: #selector(donePicker)) let spaceButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.flexibleSpace, target: nil, action: nil) let cancelButton = UIBarButtonItem(title: "Cancel", style: UIBarButtonItemStyle.plain, target: self, action: #selector(donePicker)) 

然后你可以把下面的文件放在同一个swift文件中

 func donePicker (sender:UIBarButtonItem) { // Put something here } 

Answer 3

Swift 3x：

真棒的答案已经给出，但这里是不同的方法，只是做一个pickerView并给这个inputView和inputAccessoryView ：

 YOUR_TEXTFIELD_NAME.inputView = picker func addKeyboardToolBar() { var nextButton: UIBarButtonItem? var keyboardToolBar = UIToolbar(frame: CGRect(x: CGFloat(0), y: CGFloat(0), width: CGFloat(pickerView.frame.size.width), height: CGFloat(25))) keyboardToolBar.sizeToFit() keyboardToolBar.barStyle = .default daysHourTextField.inputAccessoryView = keyboardToolBar nextButton = UIBarButtonItem(title: "Done", style: .plain, target: self, action: #selector(self.textFieldShouldReturn)) keyboardToolBar.items = [UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil), nextButton] }