Kiểm tra có phải là email in IOS

  static func isValidEmail(testStr:String) -> Bool {

        // print("validate calendar: \(testStr)")

        let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}"

        

        let emailTest = NSPredicate(format:"SELF MATCHES %@", emailRegEx)

        return emailTest.evaluate(with: testStr)

    }