CODEWITHSUNDEEP
swift
Zach
Zach

Reputation: 384

How to populate a text field from UIPicker in Swift

I found a custom UIPickerView (https://github.com/bendodson/MonthYearPickerView-Swift) to select only Month and Day. It pops up fine however I don't know how to populate the text field after I press "done". I found a few examples online which don't appear to be working for me.

    let doneButton = UIBarButtonItem(barButtonSystemItem: .done, target: self, action: #selector(donePressed))
    let spaceButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.flexibleSpace, target: nil, action: nil)
    let cancelButton = UIBarButtonItem(barButtonSystemItem: .cancel, target: self, action: #selector(cancelPressed))

    let toolBar = UIToolbar()
    toolBar.barStyle = UIBarStyle.default
    toolBar.isTranslucent = true
    toolBar.tintColor = themeColor1()
    toolBar.sizeToFit()
    toolBar.setItems([cancelButton, spaceButton, doneButton], animated: false)
    toolBar.isUserInteractionEnabled = true

    let StartDatePicker = MonthYearPickerView()
    StartDate.inputView = StartDatePicker
    StartDate.inputAccessoryView = toolBar

}

func donePressed() {
    StartDate.text = ???
    self.view.endEditing(true)

}


func cancelPressed() {
    self.view.endEditing(true)
}

Upvotes: 0

Views: 1332

Answers (2)

Hobbit
Hobbit

Reputation: 611

you need to add a delegate of picker view .. 

pickerView.delegate = self

then implement its method named as 

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

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

Now, if you want picker view to appear on touching TextField you need to do this

textField.inputView = pickerView

Also implement 

  func pickerView(pickerView: UIPickerView!, didSelectRow row: Int, inComponent component: Int) {
    yourTextfield.text = yourList[row]
}

so that when you select any row in a pickerView, the title of that row will be assign to your text field ..

Upvotes: 1

Douglas
Douglas

Reputation: 2524

You need to use the delegate method for picker view, didSelectRow. I have a similar picker view and I have multiple textviews. So in the method I check to see who is the first responder and then I set that text view to a string that is equal to the picker value.

Make sure your view controller conforms to UIPickerViewDelegate and datasource which it seems you have already done.

In the function make an if statement:  if (yourTextView.isFirstResponder)
create a string to hold the picker value: myString = pickerView array object at index
assign that string to your textview:  StartDate.text = myString

This is only pseudo code, because I wrote all my methods in Objective C. Make a comment if you need further assistance.

Upvotes: 1

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