Why timer isn't working with button in SwiftUI

Question

Created Jan ’25

Replies 1

Boosts 0

Participants 2

.onReceive construction isn't working with button long press gesture but tap is working, it increases count by 1. Construction should increase count every 0.5 seconds if button pressed

 struct Test: View {
    @State private var count = 0
    @State private var isLongPressed = false
 
    var body: some View {
        VStack {
            Text("Count: \(count)")
            Button("Increase") {
                count += 1
                print("Button tapped")
            }
            .onLongPressGesture {
                isLongPressed = true
                print("Long press started")
            }
            .onLongPressGesture(minimumDuration: 0) {
                isLongPressed = false
                print("Long press ended")
            }
        }
        .onReceive(Timer.publish(every: 0.5, on: .main, in: .common).autoconnect()) { _ in
            if isLongPressed {
                count += 1
                print("Count increased: \(count)")
            }
        }
    }
}

Boost

Answer 1

DTS Engineer OP

Apple

Jan ’25

@glebdolskiy Button automatically provides many of its own standard behaviors and its own gesture which it responds to when a user clicks or taps the button.

try adding a simultaneousGesture and see if that works.

 struct Test: View {
    @State private var count = 0
    @State private var isLongPressed = false
    
    var body: some View {
        VStack {
            Text("Count: \(count)")
            Button("Increase") {
                count += 1
                print("Button tapped")
            }
            .simultaneousGesture(
                LongPressGesture(minimumDuration: 1)
                    .onEnded { _ in
                        isLongPressed = true
                        print("Long press started")
                        
                    }
            )
        }
    }
}

0

	struct Test: View {
	@State private var count = 0
	@State private var isLongPressed = false

	var body: some View {
	VStack {
	Text("Count: \(count)")
	Button("Increase") {
	count += 1
	print("Button tapped")
	}
	.onLongPressGesture {
	isLongPressed = true
	print("Long press started")
	}
	.onLongPressGesture(minimumDuration: 0) {
	isLongPressed = false
	print("Long press ended")
	}
	}
	.onReceive(Timer.publish(every: 0.5, on: .main, in: .common).autoconnect()) { _ in
	if isLongPressed {
	count += 1
	print("Count increased: \(count)")
	}
	}
	}
	}