Ios 带有自定义UITextField选项的UIPickerView
我不确定这是否是一个新手问题,因为这是我第一次使用UIPickerView 我的类中的UIPickerView具有以下数组:Ios 带有自定义UITextField选项的UIPickerView,ios,swift,xcode,uitextfield,uipickerview,Ios,Swift,Xcode,Uitextfield,Uipickerview,我不确定这是否是一个新手问题,因为这是我第一次使用UIPickerView 我的类中的UIPickerView具有以下数组: let cameraBodies = ["A","B","C","D","E","F","G","H","I","J", "K","L","M","N","O","P","Q","R","S","T", "U","V","W","X","Y","Z","Other"] 当用户单击my tex
let cameraBodies = ["A","B","C","D","E","F","G","H","I","J",
"K","L","M","N","O","P","Q","R","S","T",
"U","V","W","X","Y","Z","Other"]
当用户单击my textField时,他们可以选择上面的字符串。如果用户选择“其他”,我希望UIPickerView关闭并更改为普通文本字段,以便用户可以输入自己的字符串。然后,如果用户删除textField中的所有自定义文本,它将返回UIPickerView
我考虑过让两个文本字段相互重叠,根据用户的选择显示/隐藏,但我觉得这不是正确的方法
任何关于如何实现这一点的帮助都将是巨大的
下面是我的课程中与UIPickerView有关的部分:
class newCameraController : UIViewController{
var selectedBody: String?
var cameraBodyCustomTextField: UITextField = {
let textField = UITextField()
textField.placeholder = "Custom Camera Body"
return textField
}()
override func viewDidLoad() {
super.viewDidLoad()
createBodyPicker()
createToolBar()
}
func createBodyPicker() {
let bodyPicker = UIPickerView()
bodyPicker.delegate = self
cameraBodyTextField.inputView = bodyPicker
}
func createToolBar() {
let toolBar = UIToolbar()
toolBar.sizeToFit()
let doneButton = UIBarButtonItem(title: "Done", style: .plain, target: self, action: #selector(newCameraController.dismissKeyboard))
toolBar.setItems([doneButton], animated: false)
toolBar.isUserInteractionEnabled = true
cameraBodyTextField.inputAccessoryView = toolBar
}
override func dismissKeyboard() {
view.endEditing(true)
}
extension newCameraController: UIPickerViewDelegate, UIPickerViewDataSource {
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return cameraBodies.count
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
return cameraBodies[row]
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
selectedBody = cameraBodies[row]
cameraBodyTextField.text = selectedBody
}
func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {
var label: UILabel
if let view = view as? UILabel {
label = view
} else {
label = UILabel()
}
label.textColor = UIColor(red:0.63, green:0.63, blue:0.63, alpha:1.0)
label.textAlignment = .center
label.font = UIFont(name: "Avenir-Medium", size: 16.0)
label.text = cameraBodies[row]
return label
}
}
根据我的意见,解决办法是: 在您的代码中,您正在显示选择器而不是键盘,这是正确的。 现在,当用户选择“其他”时,只需在cameraBodyTextField中显示所选值“其他”。 并在cameraBodyTextField下方显示一个额外的文本字段。
显示/隐藏可以通过具有更平滑动画的自动布局高度约束进行管理 您只需检查所选选项是否为“其他”,然后设置
textField.inputView=nil
。问题会回到过去。考虑场景:“用户选择其他”,TeXFieldTo变成TeXFieldE,但用户现在想在选择器中选择一个选项。这种事经常发生。你应该有一个隐藏的文本字段,只有当“其他”被选中时才隐藏它。但是我也考虑了这一点,但是我写的是CaleDATA,现在我把文本字段写到我的实体上,我不想在我的实体中创建额外的属性,如果用户选择了一个字母,有时可能是空的。我还在其他类中引用这个属性,所以这也可能会变得非常混乱。理想情况下,如果可能的话,我会把它放在一个文本字段中?@spoax您可以编写条件代码。当用户选择其他时,考虑ObjeTeXFieldValk,在数据库中输入。在编辑模式下,尝试在数据源(字符串数组)中查找相同的值,以设置选择器视图的默认选定行。如果找到,隐藏“OtherTextField”。如果未找到,请在pickerview中设置“Other”,并用数据库值显示otherTextField。使用这种方法将减少对用户体验的混淆。