Show BottomPlayerView above TabView in SwiftUI - swiftui

Question

I'm learning swiftUI and I want to make a music app.
I created a view which going to be above the tabView, but I want it to be shown only if user start playing a music.
My App, I use ZStack for bottomPlayer, and I share the bottomPlayer variable through .environmentObject(bottomPlayer) so the child views can use it:
class BottomPlayer: ObservableObject {
var show: Bool = false
}
#main
struct MyCurrentApp: App {
var bottomPlayer: BottomPlayer = BottomPlayer()
var audioPlayer = AudioPlayer()
var body: some Scene {
WindowGroup {
ZStack(alignment: Alignment(horizontal: .center, vertical: .bottom)) {
TabBar()
if bottomPlayer.show {
BottomPlayerView()
.offset(y: -40)
}
}
.environmentObject(bottomPlayer)
}
}
}
The BottomPlayerView (above the TabView)
struct BottomPlayerView: View {
var body: some View {
HStack {
Image("cover")
.resizable()
.frame(width: 50, height: 50)
VStack(alignment: .leading) {
Text("Artist")
.foregroundColor(.orange)
Text("Song title")
.fontWeight(.bold)
}
Spacer()
Button {
print("button")
} label: {
Image(systemName: "play")
}
.frame(width: 60, height: 60)
}
.frame(maxWidth: .infinity, maxHeight: 60)
.background(Color.white)
.onTapGesture {
print("ontap")
}
}
}
My TabView:
struct TabBar: View {
var body: some View {
TabView {
AudiosTabBarView()
VideosTabBarView()
SearchTabBarView()
}
}
}
And In my SongsView, I use the EnvironmentObject to switch on the bottomPlayerView
struct SongsView: View {
#EnvironmentObject var bottomPlayer: BottomPlayer
var body: some View {
NavigationView {
VStack {
Button {
bottomPlayer.show = true
} label: {
Text("Show Player")
}
}
.listStyle(.plain)
.navigationBarTitle("Audios")
}
}
}
The problem is the bottomPlayer.show is actually set to true, but doesn't appear ...
Where I am wrong?

Answer 1

In your BottomPlayer add the #Published attribute before the show boolean.
This creates a publisher of this type.
apple documentation