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swiftui onappear only once

Kevin answered on March 17, 2022 Popularity 3/10 Helpfulness 1/10

answer swiftui onappear only once

swiftui onappear only once

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If you're linking against iOS15 then you can take advantage of the new scenePhase concept:

@Environment(\.scenePhase) var scenePhase

Where ever you are the Environment if injecting this property that you can test against three conditions:

switch newPhase {
    case .inactive:
        print("inactive")
    case .active:
        print("active")
    case .background:
        print("background")
}

So, all together:

struct ContentView: View {
    @Environment(\.scenePhase) var scenePhase

    var body: some View {
        Text("Hello, World!")
            .onChange(of: scenePhase) { newPhase in
                switch newPhase {
                    case .inactive:
                        print("inactive")
                    case .active:
                        print("active")
                    case .background:
                        print("background")
                }
            }
    }
}

Popularity 3/10 Helpfulness 1/10 Language sql

Source: Grepper

Tags: onappear sql swiftui

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Contributed on Mar 17 2022

Kevin

0 Answers Avg Quality 2/10

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swiftui onappear only once

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