I want to fetch the data from on viewWillAppear(_:)
Is there any equal method or modifier available in SwiftUI also any modifier for viewDidDisappear(_:)
Add a comment |
1 Answer
Sure there are
@available(iOS 13.0, OSX 10.15, tvOS 13.0, watchOS 6.0, *) extension View { /// Adds an action to perform when this view appears. /// /// - Parameter action: The action to perform. If `action` is `nil`, the /// call has no effect. /// - Returns: A view that triggers `action` when this view appears. @inlinable public func onAppear(perform action: (() -> Void)? = nil) -> some View /// Adds an action to perform when this view disappears. /// /// - Parameter action: The action to perform. If `action` is `nil`, the /// call has no effect. /// - Returns: A view that triggers `action` when this view disappears. @inlinable public func onDisappear(perform action: (() -> Void)? = nil) -> some View }
2 Comments
jonye._.jin
Isn't
onAppear() same as viewDidAppear() not viewWillAppear()?
Asperi
@jonye._.jin No, onAppear is called when a view is inserted into view hierarchy - it might be far away from appearing on screen, if ever at all.