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// Version 1: Using initializer directly | |
struct ContentView: View { | |
@State var count = 0 | |
let timer = Timer.publish(every: 1, on: .main, in: .common).autoconnect() | |
var body: some View { | |
VStack { | |
Text("container: \(count)") | |
.padding() | |
.onReceive(timer) { _ in | |
self.count += 1 | |
} | |
Subview(count) | |
} | |
} | |
} | |
struct Subview: View { | |
@StateObject var foo: Foo | |
init(_ count: Int) { | |
_foo = StateObject(wrappedValue: Foo(count)) | |
print("init subview \(count)") | |
} | |
var body: some View { | |
Text("subview: \(foo.count)") | |
} | |
} | |
final class Foo: ObservableObject { | |
let count: Int | |
init(_ count: Int) { | |
self.count = count | |
print("init foo \(count)") | |
} | |
deinit { | |
print("deinit foo \(count)") | |
} | |
} |
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// Version 2: Using generated initializer | |
struct ContentView: View { | |
@State var count = 0 | |
let timer = Timer.publish(every: 1, on: .main, in: .common).autoconnect() | |
var body: some View { | |
VStack { | |
Text("container: \(count)") | |
.padding() | |
.onReceive(timer) { _ in | |
self.count += 1 | |
} | |
Subview(foo: Foo(count)) | |
} | |
} | |
} | |
struct Subview: View { | |
@StateObject var foo: Foo | |
var body: some View { | |
Text("subview: \(foo.count)") | |
} | |
} | |
final class Foo: ObservableObject { | |
let count: Int | |
init(_ count: Int) { | |
self.count = count | |
print("init foo \(count)") | |
} | |
deinit { | |
print("deinit foo \(count)") | |
} | |
} |
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