save string to core data via helper class func-CodePudding

In my swift code below I am trying to save a string into core data using a helper class. Right now my code is causing a runtime error stating Cannot assign value of type 'Data' to type 'String?' at imageInstance.text = data. I did something similar trying to save a image and it worked. I also added a core data photo

core data pic

class DataBaseHelper {
    
    static let shareInstance = DataBaseHelper()
    let context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext
    func saveText(data: Data) {
        let imageInstance = Info(context: context)
        imageInstance.txt = data
        
     
            
        do {
            try context.save()
            print("text is saved")
        } catch {
            print(error.localizedDescription)
        }
    }

    
   
}

BASE CLASS

class ViewController: UIViewController, UINavigationControllerDelegate, UIImagePickerControllerDelegate {
    override func viewDidLoad() {
        super.viewDidLoad()
 DataBaseHelper.shareInstance.saveText(data: "Jessica")}

CodePudding user response：

Please be more careful how you name your functions.

You are going to save Text( so the parameter label data is misleading and the type Data is wrong.

Replace

func saveText(data: Data) {

with

func saveText(data: String) {

or – more meaningful because text is already a part of the function name

func saveText(_ string: String) {
    let imageInstance = Info(context: context)
    imageInstance.txt = string

and call it

DataBaseHelper.shareInstance.saveText("Jessica")