I have a TabView in a struct. I add a NavigationView and a NavigationLink. When the view shows up the navigation bar is centered. When i tap on the navigation link the text is on the leading side. How can i make the navigation bar text align to center after i tap the navigation link in iOS 16 and above? I have searched stackoverflow and nothing seems to work in iOS 16 with this specific implementation i am posting below. Any help appreciated.
import Foundation
import SwiftUI
public struct TabViewTest: View {
#State var selectedTab: Int = 0
public var body: some View {
TabView (selection: $selectedTab) {
NavigationView {
NavigationLink(destination: Text("destination"))
{
FeedView(selectedTab: $selectedTab)
.navigationBarTitle("Feed", displayMode: .inline)
.toolbar {
ToolbarItemGroup {
Image(systemName :"magnifyingglass.circle")
.onTapGesture {
selectedTab = 1
}
}
}
}
}
.tabItem {
Text("Feed")
.foregroundColor(.white)
}
.tag(0)
}
}
struct ProfileView: View {
#Binding var selectedTab: Int
var body: some View {
ZStack {
Color.white.ignoresSafeArea()
VStack {
Text("Nav link test tap anywhere")
.font(.largeTitle)
.foregroundColor(.white)
}
}
}
}
[Xcode 14.1, iOS 16.1]
I have a NavigationStack with a navigationTitle and a TabView with 2 Views. Each View has a ScrollView (see image below):
NavigationStack and TabView problem image
When I tap on Tab1 (#1 in red on the image above), then swipe up, the behavior is as expected (#2), i.e. the big navigationTitle move to the center, and my view passes below and becomes blurry. Perfect.
However, when I tap ton Tab2 (#3) and then swipe up (#4), the big title stays big, and the view doesn't become blurry.
Then I tap on Tab1 again (#5) and it works as expected.
Please help!
Here is my code:
ContentView:
import SwiftUI
struct ContentView: View {
#State private var selection: Tab = .tab1
enum Tab {
case tab1
case tab2
}
#State private var mainTitle = "Tab1"
var body: some View {
NavigationStack {
TabView(selection: $selection) {
Tab1(mainTitle: $mainTitle)
.tabItem {
Label("Tab1", systemImage: "wrench.adjustable.fill")
}
.tag(Tab.tab1)
Tab2(mainTitle: $mainTitle)
.tabItem {
Label("Tab2", systemImage: "wrench.adjustable.fill")
}
.tag(Tab.tab2)
} .navigationTitle(mainTitle)
}
}
}
Tab1:
import SwiftUI
struct Tab1: View {
#Binding var mainTitle : String
var body: some View {
ScrollView {
Text("Text tab 1")
.padding(.all,100)
.background(.blue)
} .onAppear {
mainTitle = "Tab1"
}
}
}
Tab2:
import SwiftUI
struct Tab2: View {
#Binding var mainTitle : String
var body: some View {
ScrollView {
Text("Text tab 2")
.padding(.all,100)
.background(.green)
} .onAppear {
mainTitle = "Tab2"
}
}
}
I tried a hack that is supposed to fix the transparency bug for Tab bars, but it doesn't work.
.onAppear {
let tabBarAppearance = UITabBarAppearance()
tabBarAppearance.configureWithOpaqueBackground()
UITabBar.appearance().scrollEdgeAppearance = tabBarAppearance
}
TabViews are designed to sit at the top of the navigation hierarchy. They're intended to allow users to switch between independent sections of your app at any time.
You would generally put a separate navigation stack within each tab that then handles pushing and popping of views. And then, you can use the navigationTitle modifier to manage the screen's title.
So your structure (which might be split over multiple custom views) should look something like:
TabView {
NavigationStack {
ScrollView {
}
.navigationTitle("Tab 1")
}
.tabItem { Label("Tab1", ...) }
NavigationStack {
ScrollView {
}
.navigationTitle("Tab 2")
}
.tabItem { Label("Tab2", ...) }
}
This structure is by design, to align with Apple's Human Interface Guidelines. It's worth reading the HIG to get a handle on where Apple are coming from, and how working on the same principles can really help your app feel like it belongs on your users' device.
In the "Dest" view, after my app going to background mode and coming back to foreground mode, the navigation destination is dismissed automatically. How can I prevent this? Here is my code:
import SwiftUI
struct ContentView: View {
var body: some View {
NavigationView {
TabView {
NavigationLink {Text("Dest")} label: {Text("go to dest")}.tabItem {Text("c1")}
Text("a2").tabItem {Text("c2")}
}
}
}
}
Put the NavigationView inside the TabView:
var body: some View {
TabView {
NavigationView { // here
NavigationLink() {
Text("Dest")
} label: {
Text("go to dest")
}
}
.tabItem {Text("c1")}
Text("a2")
.tabItem {Text("c2")}
}
}
I have a navigation view inside a tabview but it doesn't show properly.
I don't know where the white space at the top is coming from.
Normaly the navbar is taking all the top.
struct HomeAdminView: View {
var body: some View {
TabView {
//FilesAdminView contains the navigationView
FilesAdminView()
.tabItem {
Image(systemName: "folder.fill")
Text("Dossier")
}
PartenaireAdminView()
.tabItem {
Image(systemName: "person.2.fill")
Text("Partenaires")
}
}
//.edgesIgnoringSafeArea(.top)
.accentColor(Constants.colorTitle)
}
}
I trie to add .edgesIgnoringSafeArea(.top) in the tab but then this bug appears : Bug display with SwiftUI
When navigation link is used inside a VStack, it becomes semi-transparent (highlighted) when tapped. Is it possible to prevent such behavior?
NavigationView {
ScrollView {
VStack() {
NavigationLink() {
MyView()
}
}
}
}