How to code, in SwiftUI, for Notifications

Question

UNIVAC Coder OP

Created Dec ’20

Replies 2

Boosts 0

Views 1.9k

Participants 2

I need to code differently when Voice Over is on.

I found this:

Code Block UIAccessibility.voiceOverStatusDidChangeNotification

Notification coding is unknown to me. I need the Notification to change my variable "accessibilityIsOn: Bool" as Voice Over changes. I've been reading google and learned that I do not need Notifications; What I need is the way to detect if the user is using Voice Over.

More reading revels this:

Code Block isVoiceOverRunning

So I will read how to use it.

Answered by OOPer in 653262022

Generally, SwiftUI is designed to work well with Combine.

You can try something like this:

Code Block struct ContentView: View {
    @State var accessibilityIsOn: Bool = false
    var body: some View {
        Text("This can be some complex View")
            .padding()
            .onReceive(NotificationCenter.default.publisher(for: UIAccessibility.voiceOverStatusDidChangeNotification)) { _ in
                self.accessibilityIsOn = UIAccessibility.isVoiceOverRunning
            }
    }
}

Boost

Answer 1

OOPer OP

Dec ’20

Accepted Answer

Generally, SwiftUI is designed to work well with Combine.

You can try something like this:

Code Block struct ContentView: View {
    @State var accessibilityIsOn: Bool = false
    var body: some View {
        Text("This can be some complex View")
            .padding()
            .onReceive(NotificationCenter.default.publisher(for: UIAccessibility.voiceOverStatusDidChangeNotification)) { _ in
                self.accessibilityIsOn = UIAccessibility.isVoiceOverRunning
            }
    }
}

1

Answer 2

UNIVAC Coder OP

Dec ’20

Whoa! that is simply amazing to me!!. I am searching but would have much difficulty finding your response. Big thanks. I will study it. Your response needs to be in the Quick Help guide built in to Xcode. But Quick Help offers some little help instead.

I also found in Swift UIkit the variable
static var isVoiceOverRunning: Bool {get}

but first try at coding it failed so more study is in order.

0