Nav BarItem Returning To Previous View

Question

In the below figure, I have a "Back" button in the nav bar which I would want for it to close the Barcode Scanner tab and bring me to to the view I was prior to hitting the "Back button. How would that be possible?

Yes. As in the previous view I was prior to clicking on "Barcode" tab. Example if I was in the "Shopping Cart" and then I went to "Barcode" tab , then once I press the "Back" button it would bring me back to the "Shopping Cart" tab the view that I was before hand. Hope that makes sense. — habed, May 10 '17 at 11:27

score 1 · Accepted Answer · answered May 10 '17 at 11:29

1

Your request is improper UI. Tabs should not contain back button for going to previous tab, and I really hope that 'Close' the tab doesn't mean you want to remove it.

Other than that you can change active tab UITabBar.setSelectedItem. But really in your case don't do it.

answered May 10 '17 at 11:29

Ivan Ičin

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How about containing back button for going to previous view? – habed May 10 '17 at 11:39
I believe that you should use a modal View Controller with Done button and then dismiss it and return. – Ivan Ičin May 10 '17 at 11:50

score 0 · Answer 2 · answered May 10 '17 at 11:33

View controllers that you load are all stacked in order of you viewing them. To go back to your previous view simply dismiss the last view controller. You can use this code:

@IBAction func backButtonPressed(_ sender: UIBarButtonItem) {
        dismiss(animated: true, completion: nil)
}

Hopefully this should do the trick.

score 0 · Answer 3 · answered May 10 '17 at 11:50

you can override back button in ViewDidLoad like :

override func viewDidLoad() {
    super.viewDidLoad()
    navigationItem.leftBarButtonItem = UIBarButtonItem(title: "Back", style: .plain, target: self, action: #selector(self.back(_:)))

}

func back(_ sender: AnyObject) {
    //if you want to go to previous view use this code 
    self.navigationController?.popViewController(animated: true)
   //if you want to go to a tab bar view use this code 
   //index of your tab bar 
    tabBarController?.selectedIndex = 1

}

Nav BarItem Returning To Previous View

3 Answers3