In SwiftUI, how do I draw a view above a bottom toolbar? - swiftui

I have a view with a bottom toolbar. When some user action is performed, I would like to display a drawer coming from the bottom that will cover this toolbar. I wasn't able to find a way to do this - the toolbar always remains on top. Here's an example of something I've tried:
struct ContentView: View {
var body: some View {
NavigationView {
ZStack {
VStack {
Spacer()
Text("Bottom Text")
}
.ignoresSafeArea(.all, edges: .bottom)
Text("Hello, world!")
.toolbar {
ToolbarItemGroup(placement: .bottomBar) {
Text("Bottom Bar")
}
}
}
}
}
}
The "Bottom Text" label gets hidden behind the bottom toolbar.
The one thing I've tried so far is to remove the .toolbar modifier when the drawer is shown (by creating a custom view modifier that returns the .toolbar modifier conditionally). This works but seems like a hack, and also has some UI artifacts as the removal of the toolbar can shift some of the other view.
Any ideas how this can be solved?
Thanks!

To show content on top of the bottom toolbar, add your views as an overlay on the NavigationView itself:
var body: some View {
NavigationView {
Text("Hello, world!")
.toolbar {
ToolbarItemGroup(placement: .bottomBar) {
Button("Bottom Bar", action: {})
}
}
}
.overlay(
VStack {
Spacer()
Text("Bottom Text")
}
)
}
Original answer:
Remove the ignoresSafeArea. The bottom safe area includes the toolbar, so by ignoring it you’re telling Swiftui to put the content behind the toolbar.

Related

SwiftUI bottom sheet like note app's format tab

Currently, I have to implement bottom sheet. And I found the very example of my need.
Is this component system component of swift or swiftui?
OR do I need to implement on my own?
PLEASE LET ME KNOW IF U HAVE SOME INFOS! XD
At first I implement with ZStack, drag gesture but the animation is not what I expected.
I need Information about whether there is component like .sheet(isPresented: Bool, content: View) of the modal like above image.
As our friend said before, it is a sheet. Inside the sheet you can either define a new view or call any of your views. Then you have to use the modifier .presentationDetents which receive a Set of PresentationDetents to say where the view has to stop when appearing on the screen. This modifier must be apply to the content of the sheet and not directly to the sheet.
struct ContentView: View {
#State var isSheetShown = false
var body: some View {
VStack {
Button("Show view"){
isSheetShown = true
}
}.sheet(isPresented: $isSheetShown, content: {
StackOfButtons()
.presentationDetents([.medium])
})
.padding()
}
}
Finally, to create that stack type of buttons you can put them all in a HStack, give them individually some padding, set a little of spacing in the HStack and the round the corners of the stack. Something like this:
struct StackOfButtons: View {
var body: some View {
HStack(spacing: 2){
Button {
print("Hola que ase")
} label: {
Image(systemName: "list.bullet")
.padding()
.background(.thinMaterial)
.foregroundColor(.black)
}
Button {
print("Hola que ase")
} label: {
Image(systemName: "list.dash")
.padding()
.background(.thinMaterial)
.foregroundColor(.black)
}
Button {
print("Hola que ase")
} label: {
Image(systemName: "list.number")
.padding()
.background(.thinMaterial)
.foregroundColor(.black)
}
}.cornerRadius(10)
}
}
Result

Customize navigationBar in Swift UI

I am new in swift ui. I want to put image button on the side of the NavigationBar title.
I want to be able to click the user image and navigate to another view. How?
You need to use navigationBarItems for putting image to navigation bar and you should add NavigationLink to that image. For center the title you need to set navigation bar title's displayMode to .inline or you can use new Toolbar api
struct ContentView: View {
var body: some View {
NavigationView {
Text("Welcome to Stack Overflow")
.navigationBarTitle("Header", displayMode: .inline)
.navigationBarItems(leading: NavigationLink(destination: Text("Destination")) {
Image(systemName: "person.crop.circle.fill")
.font(.title)
})
}
}
}
Screenshot
Another way using toolbar item.
I am adding TapGesture on image icon, and keeping it out of navigation link, as the image is not getting circular inside the NavigationLink in ToolbarItemGroup.
By leveraging isActive property of NavigationLink which monitors onTap state we can determine either we want to push our view or not.
import SwiftUI
struct WeatherView: View {
#State var onTap = false
var borderColor: Color = Color("Black")
var addProjectToolbarItem: some ToolbarContent {
ToolbarItemGroup(placement: .navigationBarLeading) {
NavigationLink(destination:Text("Welcome"), isActive: self.$onTap) {
EmptyView()
}
Image("yourImage")
.resizable()
.frame(width: 32, height: 32)
.clipShape(Circle())
.onTapGesture {
onTap.toggle()
}
}
}
var body: some View {
NavigationView {
VStack {
Text("First view")
}
.toolbar{
addProjectToolbarItem
}
.navigationTitle("Header")
.navigationBarTitleDisplayMode(.inline)
}
}
}

SwiftUI: List rows get highlighted when interacting with other views if inside a TabView

If a List is placed along with other views within a VStack which defines one page within a TabView with PageTabViewStyle, interacting (tap, long pressing) with the other views causes all (visible) rows of the List to get highlighted.
The following View demonstrates this behaviour: tapping or long pressing the Button or the purple area (Color View) will cause the rows in the List to get highlighted (Xcode 12.1 & iOS 14.1).
struct ContentView: View {
var body: some View {
TabView {
VStack {
List {
Text("Row 0")
Text("Row 1")
Text("Row 2")
}
.listStyle(InsetGroupedListStyle())
Spacer()
Button(action: { print("tapped")}, label: { Text("Button") } )
.padding(.vertical, 80)
Spacer()
Color.purple
}
Text("Second Page")
}
.tabViewStyle(PageTabViewStyle())
}
}
I assume this is a bug and have already submitted feedback, but was wondering if there is a workaround while it's not fixed.
wondering if there is a workaround while it's not fixed.
After some investigation & testing the only workaround I see is to use scroll view instead
TabView {
VStack {
ScrollView { // << here
Text("Row 0")
Text("Row 1")
Text("Row 2")
}
Note: of course it might require some manual formatting & layout inside scroll view, but there is no such bug.

Blank Space on top of NavigationView SwiftUI

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

Hidden Navbar still pushes down view

I have a:
contentView()
SignUpView()
SignInView()
The contentView calls the SignInView()
struct ContentView: View {
var body: some View {
NavigationView {
SignInView()
}
}
}
In my SignUpView() I have:
var body: some View {
VStack(alignment: .leading) {
NavigationLink(destination: SignInView()) {
Text("Sign in")
.fontWeight(.semibold)
.foregroundColor(Color("startColor"))
}
}.navigationBarHidden(true)
In my SigbInView I have:
var body: some View {
VStack(alignment: .leading) {
NavigationLink(destination: SignUpView()) {
Text("Sign up")
.fontWeight(.semibold)
.foregroundColor(Color("startColor"))
}.navigationBarHidden(true)
Im using .navigationBarHidden(true) to hide the bar, but the < back still appears in the top left hand corner to take you back to the previous screen, Iv also tried adding the navbar text = "" and setting the property to .inline
Im trying to only use these navigationLinks on the SignInView and SignUpViews to navigate, i don't want the bar to appear or push the view down.
So it looks like another property can be set to true to hide the back button:
.navigationBarBackButtonHidden(true)
This worked for me.