In iOS 13 beta 4, all View.onDisappear do not get called.
There is a navigation view and push to a Detail View. When a user tap navigation back button, the DetailView.onDisappear not get called.
How to fix it?
import SwiftUI
struct ContentView: View {
var body: some View {
NavigationView {
NavigationLink(destination: DetailView()) { Text("show") }
}
}
}
struct DetailView : View {
var body: some View {
Text("here")
.onDisappear {
print("onDisappear")
}
}
}
#if DEBUG
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
#endif
In the current beta onAppear() works great but onDisappear() doesn’t seem to get called.
Related
Do you know why the back button still showing after I wrote
.navigationBarBackButtonHidden(true)
it seem that Xcode doesn't read it correctly.
import SwiftUI
import CoreData
struct ContentView: View {
#State var goToHome: Bool = false
var body: some View {
NavigationStack {
VStack {
Welcome(gotoSomewhere: $goToHome)
}
.navigationDestination(isPresented: $goToHome) { Home() }
.navigationBarBackButtonHidden(true) //HERE IS THE NAVIGATIONBAR HIDDEN
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView().environment(\.managedObjectContext, PersistenceController.preview.container.viewContext)
}
}
I tried to write an NavigationLink but then shows me the alert:
... was deprecated in iOS 16.0: use NavigationLink(value:label:)
inside a NavigationStack or NavigationSplitView
This modifier .navigationBarBackButtonHidden(true) should be on home.
Home().navigationBarBackButtonHidden(true)
And yes the NavigationLink will be deprecated in the future, it's up to you whether it's important or not to include at the moment in your app.
I have a simple test watchOS application with a TextField in a secondary view (navigated to from a NavigationLink).
However, when the TextField is canceled or submitted, it will pop back out to the root view instead of staying in the current view. I can't find any information on this anywhere else. Any fixes?
ContentView:
import SwiftUI
struct ContentView: View {
var body: some View {
NavigationView{
NavigationLink("what", destination: DestinationView())
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
DestinationView:
import SwiftUI
struct DestinationView: View {
#State private var message: String = ""
var body: some View {
TextField(
"Send Something...",
text: $message
)
}
}
struct DestinationView_Previews: PreviewProvider {
static var previews: some View {
DestinationView()
}
}
I found the issue..
I was using a NavigationView, which is deprecated. I removed it and now it's working as intended. (XCode 13.2.1, watchOS 8.3)
*facepalm*
As written in the title i am trying to find a way to change the navigation style from left-to-right to a right-to-left Arabic style.
This is a simple NavigationView code I made:
import SwiftUI
struct HomeView: View {
var body: some View {
NavigationView {
List {
NavigationLink(destination: Text("Destination")) {
Text("Go To Destination")
}
}
.navigationTitle("Text")
}
}
}
struct HomeView_Previews: PreviewProvider {
static var previews: some View {
HomeView()
}
}
I am engaging in a small SwiftUI exercise to learn how to pass data between views using NavigationLink. I set up ContentView to send a message to the SecondView after tapping the ContentView NavigationLink. Tapping NavigationLink in the SecondView then sends the message to the ThirdView. However, I am noticing a strange UI occurrence by the time I get to ThirdView. See the screenshot below:
Any idea why this NavigationView issue is occurring? Is it related to having NavigationView in all 3 views?
Here is my code:
ContentView
struct ContentView: View {
var body: some View {
NavigationView {
NavigationLink(destination: SecondView(message: "Hello from ContentView")) {
Text("Go to Second View")
}
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
SecondView
struct SecondView: View {
var message: String
var body: some View {
Text("\(message)")
NavigationView {
NavigationLink(destination: ThirdView(message: self.message)) {
Text("Go to Third View")
}
}
}
}
struct SecondView_Previews: PreviewProvider {
static var previews: some View {
SecondView(message: String())
}
}
ThirdView
struct ThirdView: View {
var message: String
var body: some View {
NavigationView {
Text("\(message)")
}
}
}
struct ThirdView_Previews: PreviewProvider {
static var previews: some View {
ThirdView(message: String())
}
}
Feedback is appreciated. Thanks!
remove the second navigation view
struct SecondView: View {
var message: String
var body: some View {
VStack(spacing: 100 ) {
Text("\(message)")
NavigationLink(destination: ThirdView(message: self.message)) {
Text("Go to Third View")
}
}
}
}
struct ThirdView: View {
var message: String
var body: some View {
Text("\(message)")
}
}
I started to use SwiftUI after a couple years of UIKit.. This is not a piece of cake lol.
Alright, so I am trying to build an app that has a tab bar with 2 elements. Each Tab with contain a ViewController (View now) and they will be embedded in a NavigationController (NavigationView now)
The actual result is this
and I am expecting to have a nav bar with a title set to Home.
Could you explain me what I do wrong here? i followed the documentation and a couple tutorials, and I don't seem to do differently.
import SwiftUI
struct TabBarView: View {
var body: some View {
TabView() {
RedView()
.tabItem({
Image(systemName: "house.fill")
Text("Home")
})
.tag(0)
BlueView()
.tabItem({
Image(systemName: "dollarsign.square.fill")
Text("Trade")
})
.tag(1)
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
TabBarView()
}
}
struct RedView: View {
var body: some View {
NavigationView {
List {
Text("test")
}
}
.navigationBarTitle("Home")
}
}
struct BlueView: View {
var body: some View {
NavigationView {
List {
Text("test2")
}
}
.navigationBarTitle("Trade")
}
}
This is the file that contains everything at the moment. Thanks in advance for any future help!
The .navigationBarTitle should be inside NavigationView
struct RedView: View {
var body: some View {
NavigationView {
List {
Text("test")
}
.navigationBarTitle("Home") // << here !!
}
}
}