CODEWITHSUNDEEP
swiftuitextfielduikitswiftuiuiviewrepresentable
denninho
denninho

Reputation: 573

SwiftUI - State change in UITextField causes the frameWidth to grow uncontrolled and ignore bounds/frame

I am using SwiftUI and bridge to UITextField (I need to assign firstResponder). I use the code from here: SwiftUI: How to make TextField become first responder?

The following code updates my @Binding var. This of course is intended behavior. The problem is that this causes the textField to ignore the frame/ bounds. It just expands and pushes other elements out of the view. Other parts of the view are also reliant on the @State. 

func textFieldDidChangeSelection(_ textField: UITextField) {
            text = textField.text ?? ""
}

How can I update the @State and still keep the textField in the frame?

Upvotes: 46

Views: 4494

Answers (1)

Asperi
Asperi

Reputation: 257729

You need to decrease priority of content resistance in makeUIView (so content would not push external layout set in SwiftUI) like below

func makeUIView(context: UIViewRepresentableContext<MyField>) -> UITextField {
    let field = UITextField(frame: .zero)
    field.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)
    ...

Upvotes: 136

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