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dfrobison/OnChangeBinding.swift

Created October 13, 2020 21:01
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  1. dfrobison created this gist Oct 13, 2020.
    25 changes: 25 additions & 0 deletions OnChangeBinding.swift
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,25 @@
    import SwiftUI

    struct ContentView: View {
    @State private var rating = 0.0

    var body: some View {
    Slider(value: $rating.onChange(sliderChanged))
    }

    func sliderChanged(_ value: Double) {
    print("Rating changed to \(value)")
    }
    }

    extension Binding {
    func onChange(_ handler: @escaping (Value) -> Void) -> Binding<Value> {
    Binding(
    get: { self.wrappedValue },
    set: { newValue in
    self.wrappedValue = newValue
    handler(newValue)
    }
    )
    }
    }