I have an array and I want to iterate through it initialize views based on array value, and want to perform action based on array item index
When I iterate through objects
ForEach(array, id: \.self) { item in
CustomView(item: item)
.tapAction {
self.doSomething(index) // Can't get index, so this won't work
}
}
So, I've tried another approach
ForEach((0..<array.count)) { index in
CustomView(item: array[index])
.tapAction {
self.doSomething(index)
}
}
But the issue with second approach is, that when I change array, for example, if doSomething
does following
self.array = [1,2,3]
views in ForEach
do not change, even if values are changed. I believe, that happens because array.count
haven't changed.
Is there a solution for this?
This works for me:
struct ContentView: View {
@State private var array = [1, 1, 2]
func doSomething(index: Int) {
self.array = [1, 2, 3]
}
var body: some View {
ForEach(0..<array.count) { i in
Text("\(self.array[i])")
.onTapGesture { self.doSomething(index: i) }
}
}
}
The indices
property is a range of numbers.
struct ContentView: View {
@State private var array = [1, 1, 2]
func doSomething(index: Int) {
self.array = [1, 2, 3]
}
var body: some View {
ForEach(array.indices) { i in
Text("\(self.array[i])")
.onTapGesture { self.doSomething(index: i) }
}
}
}