SwiftUI Textfield Controls, Errors on Exit - ios

Question

SwiftUI Textfield Controls, Errors on Exit
I'm receiving multiple console chatter items when simply moving from textfield to
textfield in SwiftUI. When adding a new record or editing an existing one, if I
hit the keyboard return key (running on a device) I receive no warnings or errors. If
I simply tap another textfield (without using the return key) I get all this chatter.
Start:
19:45:46.969678-0700 ToDo[688:477250] [LayoutConstraints] Unable to simultaneously satisfy constraints.
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.
(
"",
"",
"",
""
)
Will attempt to recover by breaking constraint
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in may also be helpful.
2019-08-29 19:45:46.995748-0700 ToDo[688:477250] [Snapshotting] Snapshotting a view (0x14fe87ff0, _UIReplicantView) that has not been rendered at least once requires afterScreenUpdates:YES.
End:
In both cases the data is saved correctly. I am storing the data in Core Data.iOS 13.1, Xcode 11M392r - website says Beta 7, my Xcode says this build is Beta 6, Catalina19A546d.
Here's the view:
struct AddNewToDo: View {
#Environment(\.managedObjectContext) var managedObjectContext
#Environment(\.presentationMode) var presentationMode
#State private var updatedTitle: String = "No Title"
#State private var updatedFirstName: String = "No Title"
#State private var updatedLastName: String = "No Title"
#State private var updatedDate: Date = Date()
#State private var updatedDateString: String = "July 2019"
var body: some View {
VStack {
VStack(alignment: .leading) {
Text("ToDo Title:")
.padding(.leading, 5)
.font(.headline)
TextField("Enter a Title", text: $updatedTitle)
.onAppear {
self.updatedTitle = ""
}
.textFieldStyle(RoundedBorderTextFieldStyle())
}
.padding(10)
VStack(alignment: .leading) {
Text("First Name:")
.padding(.leading, 5)
.font(.headline)
TextField("Enter First Name", text: $updatedFirstName)
.onAppear {
self.updatedFirstName = ""
}
.textFieldStyle(RoundedBorderTextFieldStyle())
}
.padding(10)
VStack(alignment: .leading) {
Text("Last Name:")
.padding(.leading, 5)
.font(.headline)
TextField("Enter Last Name", text: $updatedLastName)
.onAppear {
self.updatedLastName = ""
}
.textFieldStyle(RoundedBorderTextFieldStyle())
}
.padding(10)
VStack(alignment: .leading) {
Text("Created Date:")
.padding(.leading, 5)
.font(.headline)
TextField("Enter a date", text: $updatedDateString)
.onAppear {
let formatter = DateFormatter()
formatter.timeZone = .current
formatter.dateFormat = "M-d-yyyy HH:mm:ss"
let myString = formatter.string(from: Date())
//let myCoreDataString = formatter.string(from: self.toDoItem.createdAt!)
//print(myString)
//print("myCoredataString is \(myCoreDataString)")
self.updatedDateString = myString
}
.textFieldStyle(RoundedBorderTextFieldStyle())
}
.padding(10)
VStack {
Button(action: ({
let nmo = ToDoItem(context: self.managedObjectContext)
nmo.id = UUID()
nmo.title = self.updatedTitle
nmo.firstName = self.updatedFirstName
nmo.lastName = self.updatedLastName
nmo.createdAt = Date()
do {
try self.managedObjectContext.save()
} catch {
print(error)
}
self.updatedTitle = ""
self.updatedFirstName = ""
self.updatedLastName = ""
self.updatedDateString = ""
self.presentationMode.wrappedValue.dismiss()
})) {
Text("Save")
}
.padding()
}
.padding(10)
Spacer()
}
}
}
Any guidance would be appreciated.