Change select UiPickerView text based on a string

Question

Hi I have a UIPickerView with strings inside, what I want is to select the text based on a string: I try to explain myself with a pseudo-language, what I would like to get is something like this:

if uipicker.gettext ()! = "mystring" {
    uipicker.selectext("mystring)
}

How can i do to get this in swift?

Answer 1

You most likely have an Array of strings to populate your picker, let say you have:

let data = ["string 1", "string 2", "string 3"]

You implement your UIPickerView something like this:

func numberOfComponents(in pickerView: UIPickerView) -> Int {
    return 1
}

func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
    return data.count
}

func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
    return data[row]
}

Then you can create a method that for a given String selects row in the picker

func selectPicker(withText text: String) {
    if let index = data.index(of: text) {
        picker.selectRow(index, inComponent: 0, animated: true)
    } else {
        print("text not found")
    }
}

And you are done :)