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Coding4Life
Coding4Life

Reputation: 639

How to click a button programmatically?

I have 2 view controllers which should be swapped according to userinput. So, I want to switch the views programatically based on the input I get from a text file.

Algorithm : 
if(input == 1)
{
    Go to View Controller 1
}
else if(input ==2)
{
    Go to View Controller 2 
}

Any help on how to click the button programmatically or load that particular viewcontroller with input?

Upvotes: 38

Views: 61137

Answers (2)

Sajjon
Sajjon

Reputation: 9887

Or you can just put all the logic that you perform when a button gets clicked in a separate method, and call that method from your button's selector method.

@IBAction func someButtonPressed(button: UIButton) {
    pushViewControllerOne()
}

@IBAction func someButtonPressed(button: UIButton) {
    pushViewControllerTwo()
}

func pushViewControllerOne() {
    let viewController = ViewControllerOne(nibName: "ViewControllerOne", bundle: nil)
    pushViewController(viewController)
}

func pushViewControllerTwo() {
    let viewController = ViewControllerOne(nibName: "ViewControllerTwo", bundle: nil)
    pushViewController(viewController)
}

func pushViewController(viewController: UIViewController) {
    navigationController?.pushViewController(viewController, animated: true)
}

Then instead of invoking programatically invoking a button press, just call the method pushViewControllerOne() or pushViewControllerTwo()

Upvotes: 0

Adnan Aftab
Adnan Aftab

Reputation: 14477

To fire an event programmatically you need to call sendActionsForControlEvent

button.sendActionsForControlEvents(.TouchUpInside)

--

Swift 3

button.sendActions(for: .touchUpInside)

Upvotes: 144

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