My viewDidAppear not called in view controller

Question

It turns out that what I want to do is that when I come from a 3d shortcut, forcing the UITabBarController to choose an index, if I do this in the tab bar viewDidAppear() the problem is that the viewDidAppear() of my main UIViewController Embedded is not called, if I click again on the tab bar item then already if it is called. With the rest of the drivers does not happen, I understand why it is not the one that is first in the list of items in the UITabBarController .

Tab bar controller: (Here it comes)

override func viewDidAppear(_ animated: Bool) {
    if goTasks {
        self.selectedIndex = 0
    } else if goTodo {
        self.selectedIndex = 2
    } else if goProjects {
        self.selectedIndex = 3
    } else if goSearch {
        self.selectedIndex = 0
    }

}

My first UIViewController : (Not called this method)

override func viewDidAppear(_ animated: Bool) {
    print("Entry")
}

Is the problem override the methods? Any solution?

Answer 1

In your UITabBarController class viewDidAppear func , call it's super class, like this

 override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        if goTasks {
            self.selectedIndex = 0
        } else if goTodo {
            self.selectedIndex = 2
        } else if goProjects {
            self.selectedIndex = 3
        } else if goSearch {
            self.selectedIndex = 0
        }

    }

After that, your first viewcontroller will call this method.

override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)
    print("Entry")
}

Answer 2

i think you have to call function from super:

override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated) // here what i ment

    if goTasks {
        self.selectedIndex = 0
    } else if goTodo {
        self.selectedIndex = 2
    } else if goProjects {
        self.selectedIndex = 3
    } else if goSearch {
        self.selectedIndex = 0
    }

}

Answer 3

override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
    if goTasks {
        self.selectedIndex = 0
    } else if goTodo {
        self.selectedIndex = 2
    } else if goProjects {
        self.selectedIndex = 3
    } else if goSearch {
        self.selectedIndex = 0
    }
}

You need to add super.viewDidAppear(animated), hope its word now

Answer 4

我在做什么错误，我在viewWillAppear里面放置了super.viewDidAppear(true) 。