I am developing an iOS app using SwiftUI and have encountered an Auto Layout constraint conflict issue that appears when tapping on a TextField within a LoginView. I've tried several troubleshooting steps but haven't been able to resolve it.
Error Message:
Probably at least one of the constraints in the following list is one you don't want.
Try this:
(1) look at each constraint and try to figure out which you don't expect;
(2) find the code that added the unwanted constraint or constraints and fix it.
(
"<NSLayoutConstraint:0x6000021298b0 'accessoryView.bottom' _UIRemoteKeyboardPlaceholderView:0x10460dd10.bottom == _UIKBCompatInputView:0x1059220e0.top (active)>",
"<NSLayoutConstraint:0x60000217a620 'assistantHeight' SystemInputAssistantView.height == 45 (active, names: SystemInputAssistantView:0x10591ce60 )>",
"<NSLayoutConstraint:0x60000217d090 'assistantView.bottom' SystemInputAssistantView.bottom == _UIKBCompatInputView:0x1059220e0.top (active, names: SystemInputAssistantView:0x10591ce60 )>",
"<NSLayoutConstraint:0x60000217d040 'assistantView.top' V:[_UIRemoteKeyboardPlaceholderView:0x10460dd10]-(0)-[SystemInputAssistantView] (active, names: SystemInputAssistantView:0x10591ce60 )>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x60000217d040 'assistantView.top' V:[_UIRemoteKeyboardPlaceholderView:0x10460dd10]-(0)-[SystemInputAssistantView] (active, names: SystemInputAssistantView:0x10591ce60 )>
This error appears in the console when I click on the TextField in my LoginView while running the code on a simulation. The app doesn't crash, but the console indicates there is a constraint conflict related to the keyboard. Here's my LoginView:
struct LoginView: View {
@StateObject var viewModel = LoginViewModel()
var body: some View {
NavigationStack {
VStack {
Spacer()
Image("logo")
.resizable()
.scaledToFit()
.frame(width: 150, height: 100)
VStack {
TextField("Enter your email", text: $viewModel.email)
.autocapitalization(/*@START_MENU_TOKEN@*/.none/*@END_MENU_TOKEN@*/)
.modifier(TextFieldModifier())
SecureField("Enter your password", text: $viewModel.password)
.modifier(TextFieldModifier())
}
Button {
print("Show forgot password")
} label: {
Text("Forgot Password")
.font(.footnote)
.fontWeight(.semibold)
.padding(.top)
.padding(.trailing, 20)
}
.frame(maxWidth: .infinity, alignment: .trailing)
Button {
Task { try await viewModel.signIn() }
} label: {
Text("Login")
.font(.subheadline)
.fontWeight(.semibold)
.foregroundColor(.white)
.frame(width: 360, height: 44)
.background(Color(.black))
.cornerRadius(8)
}
.padding(.vertical)
HStack {
Rectangle()
.frame(width: (UIScreen.main.bounds.width / 2) - 40, height: 0.5)
Text("OR")
.font(.footnote)
.fontWeight(.semibold)
.foregroundColor(.gray)
Rectangle()
.frame(width: (UIScreen.main.bounds.width / 2) - 40, height: 0.5)
}
.foregroundColor(.gray)
HStack {
Image("facebook_logo")
.resizable()
.frame(width: 20, height: 20)
Text("Continue with Facebook")
.font(.footnote)
.fontWeight(.semibold)
.foregroundColor(Color(.systemBlue))
}
.padding(.top, 8)
Spacer()
Divider()
NavigationLink {
AddEmailView()
.navigationBarBackButtonHidden(true)
} label: {
HStack (spacing: 3) {
Text("Don't have an account?")
Text("Sign Up")
.fontWeight(.semibold)
}
.font(.footnote)
}
.padding(.vertical, 16)
}
}
}
}
#Preview {
LoginView()
}
And my TextFieldModifier:
struct TextFieldModifier: ViewModifier {
func body(content: Content) ->some View {
content
.font(.subheadline)
.padding(12)
.background(Color(.systemGray6))
.cornerRadius(10)
.padding(.horizontal, 24)
.padding(.top)
}
}
Attempts to Resolve:
-
I've checked the TextFieldModifier for any potential issues but it seems standard.
-
I've tried simplifying the view by removing other elements, but the issue persists.
-
The issue seems to occur regardless of the simulator device or iOS version I use.
Questions:
-
What could be causing this Auto Layout constraint conflict in a SwiftUI app?
-
Are there any known issues with SwiftUI's TextField and keyboard interactions that might lead to such constraints issues?
-
Any suggestions on how to debug or resolve this constraint conflict?