How to store input from TextField into an array of Strings in Swift?

Question

I have a Textfield and a button. Wenn the button is pressed, a function is triggered that stores the items that are typed in the TextField into an Array and then outputs the current contents of the Array to the console. How to store the input from the TextField into an array of strings? I've just started learning Swift and need your help. Thanks a lot in advance!

 @IBOutlet weak var inputEntered: UITextField!


@IBAction func buttonAddToList(_ sender: UIButton) {

    var shoppingList: [String] = []

    let item = inputEntered.text
    shoppingList.append(item)

    for product in shoppingList {
        print(product)
    }

}

Please post code that you have tried - you'll not get replies from people on Stack Overflow unless you show you have had a go at it yourself and where you get stuck. — codewithfeeling
– codewithfeeling, Commented May 14, 2020 at 23:29
you need to declare your array as a property of your view controller. Move var shoppingList: [String] = [] out of your method buttonAddToList — Leo Dabus
– Leo Dabus, Commented May 15, 2020 at 0:05
You need also to force unwrap the text property let item = inputEntered.text! — Leo Dabus
– Leo Dabus, Commented May 15, 2020 at 0:08

Joshua · Accepted Answer · 2020-05-15 02:02:01Z

1

If you want to store all inputs declare your strings outside the function

@IBOutlet weak var inputEntered: UITextField!
var shoppingList: [String] = [] // our holder of strings

@IBAction func buttonAddToList(_ sender: UIButton) {

    if let item = inputEntered.text, item.isEmpty == false { // need to make sure we have something here
        shoppingList.append(item) // store it in our data holder
    }
    inputEntered.text = nil // clean the textfield input

    for product in shoppingList {
        print(product) // prints the items currently in the list
    }
}

The flow will be, everytime you click the button it adds that to the list and remove the text input value so it feels like you are ready for the next input/item in the list.

answered May 15, 2020 at 2:02

Joshua

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2 Comments

palumbes Over a year ago

Thank you very much! It was very helpful. Do you know which methods could delete duplicates from the console? For loop generates duplicates that I don't need.

palumbes Over a year ago

Update: To avoid duplicates generated by the for loop I wrote just print(shoppingList.last!) instead of for loop.

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