I have just found a solution.
Given this code example:
assistant = MCAdvertiserAssistant(serviceType: "service", discoveryInfo: nil, session: session!)
browser = MCBrowserViewController(serviceType: "service", session: session! )
It is sufficient to insert in the info.plist the following fields:
1) Privacy - Local Network Usage Description
2) Bonjour services with the following initialisation: \_service.\_tcp and \_service.\_udp
mirkofranco
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Have you find any solution?
Thanks for your answer.
No, my goal was not to insert if chain, but this seems to be the only way.
I use @Binding and @State to access the subviews state.
I thought there was something like this, as in other languages, so I could have had a cleaner code and take advantage of the polymorphism.
var selectedView : any View
/* or something like this */
var viewList : [View]
I would like to do something like this.
struct FirstView: View{
@State var selectedValue = 0
var selectedView : some View = SubviewA()
var body: some View{
VStack{
Picker(selection: $selectedValue, label: Text("someText")){
Text("A").tag(0)
Text("B").tag(1)
Text("C").tag(2)
Text("D").tag(3)
Text("E").tag(4)
Text("F").tag(5)
}.pickerStyle(SegmentedPickerStyle())
selectedView
}
}
}
struct SubviewA: View{
var body: some View{
Text("Subview A")
}
}
struct SubviewB: View{
var body: some View{
Text("Subview B")
}
}
struct SubviewC: View{
var body: some View{
Text("Subview C")
}
}
struct SubviewD: View{
var body: some View{
Text("Subview D")
}
}
struct SubviewE: View{
var body: some View{
Text("Subview E")
}
}
struct SubviewF: View{
var body: some View{
Text("Subview F")
}
}
In the real scenario each subview is more complex than a simple Text. It has an image and a Picker, like this.
struct SubviewRealExample: View {
@State var selection = [Int](repeatElement(0, count: 2))
var body: some View{
VStack{
ExercisePreview(background: "bgAcuity_thumb", symbol: ViewModel.getImageName())
MultiPicker(data: ViewModel.getData(), selection: $selection)
}
}
}
I would like selectedView to change every time the selected item in the picker changes. The only way that comes to my mind is the following.
struct FirstView: View{
@State var selectedValue = 0
var body: some View{
VStack{
Picker(selection: $selectedValue, label: Text("someText")){
Text("A").tag(0)
Text("B").tag(1)
Text("C").tag(2)
Text("D").tag(3)
Text("E").tag(4)
Text("F").tag(5)
}.pickerStyle(SegmentedPickerStyle())
if (selectedValue == 0){
SubviewA()
}else if(selectedValue == 1){
SubviewB()
}else if(selectedValue == 2){
SubviewC()
}else if(selectedValue == 3){
SubviewD()
}else if(selectedValue == 4){
SubviewE()
}else if(selectedValue == 5){
SubviewE()
}else{
EmptyView()
}
}
}
}
struct SubviewA: View{
var body: some View{
Text("Subview A")
}
}
struct SubviewB: View{
var body: some View{
Text("Subview B")
}
}
struct SubviewC: View{
var body: some View{
Text("Subview C")
}
}
struct SubviewD: View{
var body: some View{
Text("Subview D")
}
}
struct SubviewE: View{
var body: some View{
Text("Subview E")
}
}
struct SubviewF: View{
var body: some View{
Text("Subview F")
}
}
If the subviews were only to be displayed I could use an Anyview array, but I need to access to the subviews state.
In that way I can do a sort of "callback", but I can't add add or change anything in the body.
Here I add it.
struct FirstView: View{
@State var selectedValue = 0
var body: some View{
VStack{
Picker(selection: $selectedValue, label: Text("someText")){
Text("A").tag(0)
Text("B").tag(1)
Text("C").tag(2)
Text("D").tag(3)
Text("E").tag(4)
Text("F").tag(5)
}.pickerStyle(SegmentedPickerStyle())
/* Here I want to choose different views depending on the item selected */
}
}
}
struct SubviewA: View{
var body: some View{
Text("Subview A")
}
}
struct SubviewB: View{
var body: some View{
Text("Subview B")
}
}
/* One subview for each item in picker */
There must be one view for each item in picker. In the real scenario, each subview is more complex than a simple Text and has different image and different components. When the selected item changes, the corresponding subview must be displayed.
I want to choose different subview depending on the selected item in the picker.
Here there is an example.
struct FirstView: View{
@State var selectedValue = 0
var body: some View{
VStack{
Picker(selection: $selectedValue, label: Text("someText")){
Text("A").tag(0)
Text("B").tag(1)
Text("C").tag(2)
Text("D").tag(3)
Text("E").tag(4)
Text("F").tag(5)
}.pickerStyle(SegmentedPickerStyle())
// Here I want to choose different views depending on the item selected
}
}
}