Extend SwiftUI Keyboard with Custom Button

问题

I'm trying to find a way to add a key or button to the SwiftUI numberPad. The only references I have found say it is not possible. In the Swift world I added a toolbar with a button to dismiss the keyboard or perform some other function.

I would even build a ZStack view with the button on top but I can't find a way to add the numberPad to my own view.

All I'm really trying to do in this case is dismiss the numberPad when the data is entered. I first attempted to modify the SceneDelegate to dismiss on taps, but that only works if I tap in another text or textfield view not in open space on the view.

window.rootViewController = UIHostingController(rootView: contentView.onTapGesture {
    window.endEditing(true)
})

Ideally, I'd add a Done key to the lower left space. Second best add a toolbar if it can be done in SwiftUI.

Any guidance would be appreciated.

Xcode Version 11.2.1 (11B500)

回答1:

Solved the issue using UIRepresentable protocol

 struct TestTextfield: UIViewRepresentable {
    @Binding var text: String
    var keyType: UIKeyboardType
    func makeUIView(context: Context) -> UITextField {
        let textfield = UITextField()
      textfield.keyboardType = keyType
        let toolBar = UIToolbar(frame: CGRect(x: 0, y: 0, width: textfield.frame.size.width, height: 44))
        let doneButton = UIBarButtonItem(title: "Done", style: .done, target: self, action: #selector(textfield.doneButtonTapped(button:)))
        toolBar.items = [doneButton]
        toolBar.setItems([doneButton], animated: true)
        textfield.inputAccessoryView = toolBar
        return textfield
    }

    func updateUIView(_ uiView: UITextField, context: Context) {
        uiView.text = text

    }
}

extension  UITextField{
    @objc func doneButtonTapped(button:UIBarButtonItem) -> Void {
       self.resignFirstResponder()
    }

}

Using in content view

struct ContentView : View {
@State var text = ""

var body: some View {
    TestTextfield(text: $text, keyType: UIKeyboardType.phonePad)
        .frame(minWidth: 0, maxWidth: .infinity, minHeight: 0, maxHeight: 50)
        .overlay(
            RoundedRectangle(cornerRadius: 16)
                .stroke(Color.blue, lineWidth: 4)
    )
}

}

来源：https://stackoverflow.com/questions/59003612/extend-swiftui-keyboard-with-custom-button

标签

ios

xcode

keyboard

swiftui