Multiple UIPickerView in the same UIView

Question

I\'m a complete beginner on iOS dev and I want to create a little iOS application. On this application, 3 UIPickerViews are supposed to display different data.

Answer 1

You're comparing instances with tags.

Replace:

func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String! {
    if pickerView2 == 2 {
        return test[row]
    } else if pickerView3 == 3{
        return test2[row]
    }
        return ""
}

with:

func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String! {
    if pickerView2.tag == 2 {
        return test[row]
    } else if pickerView3.tag == 3 {
        return test2[row]
    }
        return ""
}

Anyway, you don't need to tag your pickers. The pickers come in the datasource and delegate methods. You can compare instances. Something like this:

func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String! {
    if pickerView2 == pickerView {
        return test[row]
    }
    if pickerView3 == pickerView {
        return test2[row]
    }
    return ""
}