SwiftUI How to push to next screen when tapping on Button avoid @state

Question

Created May ’21

Replies 5

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Views 2.8k

Participants 2

I want push and post a text to next screen when tapping on Button. But NavigationLink need @state property to catch data. How to avoid this? I hope there is a way I only handle data in button action.

Code Block Swift  @State var selection: Int? = nil
  @State var text: String? = nil
   
  var body: some View {
    VStack(content: {
      HStack(alignment: .center, spacing: nil, content: {
        NavigationLink(destination: Drawing(text: text), tag: 1, selection: $selection) {
          Button("complete", action: {
            print(self.selection)
            print(self.text)
            self.text = "hello"
            self.selection = 1
          })
        }
      }).padding()

Answered by OOPer in 674373022

I think this is a bit difficult to understand compared with the commonly used implementation. For example, It's does not need set some property in UIViewController for post data to next UIViewController when tap a button.

Seems the best way for you is to go back to the UIKit world.

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Answer 1

OOPer OP

May ’21

How to avoid this?

Why do you want to avoid it?

And why are you using a Button as a label of the NavigationLink?

If you could explain what you really want to do, there may be some ways. But currently, you look just trying something strange.

0

Answer 2

weiminghuaa OP

May ’21

I think this is a bit difficult to understand compared with the commonly used implementation. For example, It's does not need set some property in UIViewController for post data to next UIViewController when tap a button.

Code Block Swift@IBAction func complete(_ sender: Any) {
   let text = "some data"
   let drawingViewController = DrawingViewController(text: text)
   navigationController?.pushViewController(drawingViewController, true)
}

0

Answer 3

OOPer OP

May ’21

Accepted Answer

I think this is a bit difficult to understand compared with the commonly used implementation. For example, It's does not need set some property in UIViewController for post data to next UIViewController when tap a button.

Seems the best way for you is to go back to the UIKit world.

0

Answer 4

weiminghuaa OP

May ’21

Seems the best way for me is go to the Flutter world. HeHe.

0

Answer 5

OOPer OP

May ’21

Seems the best way for me is go to the Flutter world. HeHe.

Congratulations for finding the best for you. May your app be great.

0