CODEWITHSUNDEEP
swiftdatasourceuipickerview
Carsten Høvsgaard
Carsten Høvsgaard

Reputation: 27

PickerView - ViewController does not conform to protocol UIPickerViewDataSource

I am having at bit og trouble with my PickerView. First my ViewController does not accept UIPickerViewDataSource no matter what I do. Second, the PickerView will only show the first row. I need it to show both rows and display in one TextField called school

What do I do wrong ?????

Can anyone help me before I go crazy 

enter code here
    private let typeComponent = 0
    private let areaComponent = 1
    private let typeOption = ["HighSchool of", "College of", "University of"]
    private let areaOption = ["Miami", "Los Angeles", "New York"]

        // PickerView - School  2 af 5
    func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
        return 2
    }
    // PickerView - School  3 af 5
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        if component == typeComponent {
            return typeOption.count
        } else {
            return areaOption.count
    }
    }
    // PickerView - School  4 af 5
    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        if component == typeComponent {
            return typeOption[row]
        } else {
        return areaOption[row]

    }
    }
    // PickerView - School  5 af 5
    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
//        school.text = pickOption[component][row]

        let typeRow = pickerView.selectedRow(inComponent: (0))
        let areaRow = pickerView.selectedRow(inComponent: (1))
        let type = typeOption[typeRow]
        let area = areaOption[areaRow]
        school.text = "\(type)\(area)"
    }


    override func viewDidLoad() {
        super.viewDidLoad()



        //Placeholder TextView Interest and about 1 ag 3
        Interest.delegate = self
        Interest.text = "What are your interests..."
        Interest.textColor = UIColor.lightGray

        about.delegate = self
        about.text = "Tell about yourself..."
        about.textColor = UIColor.lightGray

        //PickerView School  1 af 5
        let pickerView = UIPickerView()
        pickerView.delegate = self
        pickerView.dataSource = self
        pickerView.backgroundColor = UIColor.white
        school.inputView = pickerView

Upvotes: 0

Views: 1387

Answers (2)

Arpit Dongre
Arpit Dongre

Reputation: 1713

Make sure your class conforms to UIPickerViewDataSource protocol like this: 

class YourViewController: UIPickerViewDataSource {
//
}

Updated:

For Swift 3 you have to use this datasource function:

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

and not the one you used.

Upvotes: 0

Sahil
Sahil

Reputation: 9226

Implement all the required methods of UIPickerViewDataSource. If you not conform to UIPickerViewDataSource it will give you error.

Methods which is Required to implement in your conforming class

in Swift 2.0 

func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int

in Swift 3.0

func numberOfComponents(in pickerView: UIPickerView) -> Int
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int

Upvotes: 1

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