问题描述
我可以在用户点击文本字段时显示工具栏。但我需要对图标做同样的事情。我尝试使用手势重新识别器,但无法显示工具栏。有什么问题?
func createtoolbar() {
toolBar.sizetoFit()
let spaceButton = UIBarButtonItem(barButtonSystemItem: .flexibleSpace,target: nil,action: nil)
let tamamButton = UIBarButtonItem(title: NSLocalizedString("done",comment: ""),style: .plain,target: self,action: #selector(loadNewPriceAndReload))
toolBar.setItems([spaceButton,tamamButton],animated: false)
toolBar.isUserInteractionEnabled = true
pickerTextField.inputAccessoryView = toolBar
}
func createPickerView() {
pickerView.delegate = self
pickerView.dataSource = self
pickerView.backgroundColor = #colorLiteral(red: 0.1834549492,green: 0.1834549492,blue: 0.1834549492,alpha: 1)
pickerView.tintColor = .white
pickerTextField.inputView = pickerView
}
这是将图标放在 textField 右侧的扩展
extension UITextField {
func setIcon(_ image: UIImage,tap:UIGestureRecognizer) {
let iconView = UIImageView(frame:
CGRect(x: 7,y: 11,width: 15,height: 10))
iconView.image = image
iconView.isUserInteractionEnabled = true
iconView.addGestureRecognizer(tap)
let iconContainerView: UIView = UIView(frame:
CGRect(x: -50,y: 0,width: 30,height: 32))
iconContainerView.layer.cornerRadius = 3
iconContainerView.layer.maskedCorners = [.layerMaxXMinYCorner,.layerMaxXMaxYCorner]
iconContainerView.addSubview(iconView)
iconContainerView.backgroundColor = #colorLiteral(red: 0.04554035515,green: 0.5175096393,blue: 0.7420636415,alpha: 1)
rightView = iconContainerView
rightviewmode = .always
}
}
解决方法
无论是由于 textField 还是其他任何原因,为了显示 pickerView,我总是倾向于采用这种方法:
let picker = UIPickerView()
picker.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(picker)
picker.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor).isActive = true
picker.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor).isActive = true
picker.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor).isActive = true