duyquang91 / activityindicator Goto Github PK

I've put this together to creating a binding for SwiftUI view update:

import SwiftUI
import Combine

@propertyWrapper struct ActivityIndicatorProperty: DynamicProperty {
    @StateObject var activity: ActivityIndicator

    public var wrappedValue: Bool {
        get { activity.isLoading }
        nonmutating set { }
    }

    var projectedValue: AnyPublisher<Bool, Never> {
        activity.loading.eraseToAnyPublisher()
    }
}

I have a simple Login screen, which is called a login API after a button click, but when the API causes an error, the .trackError(errorIndicator) has some weird behavior, the API does not call but I keep receive the last error it's ever emitted repeatedly after writing some more text in the text field or click the login button, then I use the .catch { } operator, it solves the problem.

Here is my demo source code and video:

test-activity-indicator.zip