Core data SwiftUI TextField CoreData-更改属性';s数据
我试图使用TextField来更改CoreData属性的数据,但我想到的一切都没有成功。有一个类似的问题(列在下面),我将发布正确答案的代码来解释它Core data SwiftUI TextField CoreData-更改属性';s数据,core-data,swiftui,Core Data,Swiftui,我试图使用TextField来更改CoreData属性的数据,但我想到的一切都没有成功。有一个类似的问题(列在下面),我将发布正确答案的代码来解释它 struct ItemDetail: View { @EnvironmentObject var itemStore: ItemStore let idx: Int var body: some View { NavigationView { Stepper(value: $ite
struct ItemDetail: View {
@EnvironmentObject var itemStore: ItemStore
let idx: Int
var body: some View {
NavigationView {
Stepper(value: $itemStore.items[idx].inventory) {
Text("Inventory is \(self.itemStore.items[idx].inventory)")
}
// Here I would like to do this
// TextField("PlaceHolder", $itemStore.items[idx].name)
// That doesn't work... also tried
// TextField("PlaceHolder", $name) - where name is a @State String
// How can you then automaticlly assign the new value of @State name
// To $itemStore.items[idx].name?
.padding()
.navigationBarTitle(itemStore.items[idx].name)
}
}
}
原始问题:
我现在让它工作了
struct ItemDetail: View {
@EnvironmentObject var itemStore: ItemStore
let idx: Int
// Added new @State variable
@State var name = ""
var body: some View {
NavigationView {
Stepper(value: $itemStore.items[idx].inventory) {
Text("Inventory is \(self.itemStore.items[idx].inventory)")
}
TextField("Placeholder", text: $name) {
// When the enter key is tapped, this runs.
self.itemStore.items[self.idx].name = self.name
}
.padding()
.navigationBarTitle(itemStore.items[idx].name)
}
}
}