Call function as string in Swift

Question

I am trying to call a function from another view controller with NSSelectorFromString. I have tried this:

MainScreenViewController().perform(NSSelectorFromString("function"))

But the application crashes. Thanks in advance.

The perform selector pattern with string argument and NSSelectorFromString is very objective-c-ish. There are better (and more reliable) ways in Swift — vadian
– vadian, Commented Jan 19, 2018 at 11:57

user3151675 · Accepted Answer · 2018-01-19 11:47:33Z

3

You should add an @objc inference to the function, otherwise your function will not be expressable in Objective-C, which is what NSSelectorFromString uses.

@objc func function() {
    [...]
}

Learn more about the limited @objc inference in Swift 4 here.

edited Jan 19, 2018 at 11:47

answered Jan 19, 2018 at 11:02

user3151675

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Ahmad F Over a year ago

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