I am new to Xcode and have found a useful book online called 'Intro to app development with Swift. It is written for Xcode 10 but I have Xcode 12.4. The instructions do not follow in the new version. In particular I want to add an image in the View Controller but I can't find anything like Image View in the Attributes Inspector. Can someone indicate. where this is so I can move on from the exercise I am doing. Also Is there an upto date book online that can help me learn Xcode?

I am a begginer using Swift. In the example I am following from the book ' iOS 14 Programming for Beginners', the instructions tell me to create a folder called Location and as sub folders create 2 other folders called Model and View. It then instructs me to right click on Location, new file (Cocoa Touch Class) and name the swift file LocationViewController and create the file. According to the book, it should contain the following override function: override func viewDidLoad() { super.viewDidLoad() } Here is the file that is produced when I create the Cocoa Touch Class, where the above override is missing. l // //  LocationViewController.swift //  LetsEat2 // //  Created by Tony Hudson on 17/03/2021. // import UIKit class LocationViewController: UICollectionViewCell {         } As this is generated by Cocoa Touch, I can't see why this is missing? Can anybody explain why this code is missing?

I am just started to learn iOS programming using Xcode. This may seem a stupid question but I can't figure out how to set the screen to show the storyboard on the left and the swift code on the right. I am new to Xcode and am working through an exercise and need the Storyboard scenes and the specific swift file where I need to drag from the scene to the swift file. I have clicked on Assistant and the assistant editor should be set to Automatic LocationViewController.swift. When I click on Assistant with Storyboard selected, it says no Assistant results, if I click on the swift file in the tabs I get 2 copies of the swift file?? I have looked for a tutorial or info on the web but can't find any info on this topic. Could someone please help?

I am new to programming and am struggling to find a solution to a problem in the exercise I am using to learn Xcode programming. I have even copied the code from the book website I am using. I can stop the fatal error if I add a question mark or a Exclamation mark to the following line: self.weightInput.delegate = self self.heightInput.delegate = self This is how I alter the lines: self.weightInput!.delegate = self self.heightInput!.delegate = self The code builds in both cases and only produces a Fatal Error when I run the simulator without the unwrapping tags. With the unwrapping added the simulator runs, but when I enter the data and click on the link nothing appears in the MY BMI text box. I have not mastered debugging yet so don't know how to discover where the fault lies. Can anyone help as I can't learn any more Xcode until I can see where my mistakes are. Here is the full code: //  ViewController.swift //  BMI Calculator // //  Created by Tony Hudson on 25/03/2021. import UIKit class ViewController: UIViewController, UITextFieldDelegate {         @IBOutlet weak var weightInput: UITextField!         @IBOutlet weak var heightInput: UITextField!         @IBOutlet weak var BMIOutput: UITextField!         @IBOutlet weak var categoryOutput: UILabel!         override func viewDidLoad() {         super.viewDidLoad()         // Do any additional setup after loading the view, typically from a nib.             self.weightInput.delegate = self        //added either ! or ? here and don't get fatal error             self.heightInput.delegate = self        //added either ! or ? here and don't get fatal error     }         @IBAction func calcBMI(_ sender: AnyObject) {             if let heightStr = heightInput.text {             if heightStr == "" {                 return             }             else {                 if let weightStr = weightInput.text {                     if weightStr == "" {                         return                     }                     else {                             if let heightNum = Double(heightStr) {                             if let weightNum = Double(weightStr) {                                 let BMI: Double = (weightNum) / (heightNum * heightNum)                                 BMIOutput.text = String(BMI)                         print(BMI)                         switch BMI {                         case 1..15:                             categoryOutput!.text = "Very severely underweight"                         case 15...16:                             categoryOutput!.text = "Severely underweight"                         case 16..18.5:                             categoryOutput!.text = "Underweight"                         case 18.5..25:                             categoryOutput!.text = "Normal"                         case 25..30:                             categoryOutput!.text = "Overweight"                         case 30..35:                             categoryOutput!.text = "Moderately obese"                         case 35..40:                             categoryOutput!.text = "Severely obese"                         case 40..60:                             categoryOutput!.text = "Very severely obese"                         default:                             return                         }                                              } }                     }                 }             }         }              }          func textFieldShouldReturn(_ textField: UITextField) - Bool {         self.weightInput.resignFirstResponder()         self.heightInput.resignFirstResponder()         return true     }          override func didReceiveMemoryWarning() {         super.didReceiveMemoryWarning()         // Dispose of any resources that can be recreated.     }  }

I am a beginner trying to learn Xcode from a book, but its out of date (written for iOS 10, Swift 3). I shows a template called Tabbed, which is not in the latest version os Xcode. I found a Tab Bar Controller but that does not set up the views as shown in the book. I tried creating a standard single view app then added the Tab Bar Controller which added a set of 3 Tabbed view controllers (master + Item 1 & item 2) and reading the book it should have created a Swift file for each of the scenes. But it did not create any. Next you were supposed to create a third scene and link it to the master Tab Bar Controller. This did have the basic View Controller code. As this does not work exactly as the old version how I produce the correct swift code for the 2 item tab view controllers. Do I just copy the Class files for the one that I added as the Third view controller and rename them FirstViewController.swift and SecondViewController.swift? I'm worried that the automated creation of files may create back office code and the method I suggest may not work correctly. The book I am using is: Beginners Guide to iOS 10 App Development Using Swift 3 by S Yamacli.

I am trying to create a number of cells on the iPhone screen. initially the cells default value is too small so I changed them in the size inspector. Visually I can see the new size is correct on the storyboard (2 per row), but when I run the simulator the cells are the original size. I have tried quitting both the simulator and the Xcode, but it still is incorrect. Is this a bug? How can I sort this out?

I am trying to learn swift and have a problem with segmented controls. I have an IBAction which will use switch to select 'Male' or 'Female'. Here is the code: @IBAction func genderButton(_ sender: UISegmentedControl) {         switch segmentedControl.selectedSegmentIndex {         case 0:             userGender = "Female"         case 1:             userGender = "Male"         default:             return         }     } However I get an error on the switch line: Cannot find 'segmentedControl' in scope I have looked on the web and the method looks OK to me, so why do I get this error?

I am trying to learn Xcode/Swift and have a problem. I get the following error after build and after I have entered my age. Usually its a typo but this is not the case. Here is the error: [CalorieCounter.FirstViewController yourAge:]: unrecognized selector sent to instance 0x144b071 Here is the whole code: // //  FirstViewController.swift //  CalorieCounter // //  Created by Tony Hudson on 11/04/2021. // import UIKit var userAge: Double? var userWeight: Double? var userGender: String = "Female" class FirstViewController: UIViewController {     override func viewDidLoad() {         super.viewDidLoad()         // Do any additional setup after loading the view.     }     @IBOutlet weak var yourAge: UITextField!     @IBOutlet weak var yourWeight: UITextField!     @IBOutlet weak var segmentedControl: UISegmentedControl!     @IBAction func genderButton(_ sender: UISegmentedControl) {         switch sender.selectedSegmentIndex {         case 0:             userGender = "Female"         case 1:             userGender = "Male"         default:             return         }     }     @IBAction func savePersonalInfo(_ sender: Any) {         userWeight = Double(yourWeight.text!)         userAge = Double(yourAge.text!)     } } Can anyone help me solve this problem

I am learning Xcode/Swift from Ahmad Sahar's book and I have an exception error: Exception NSException * "could not dequeue a view of kind: UICollectionElementKindCell with identifier restaurantCell - must register a nib or a class for the identifier or connect a prototype cell in a storyboard" 0x00006000002d06c0 name __NSCFConstantString * "NSInternalInconsistencyException" 0x00000001c3059170 reason __NSCFString * "could not dequeue a view of kind: UICollectionElementKindCell with identifier restaurantCell - must register a nib or a class for the identifier or connect a prototype cell in a storyboard" 0x00006000037a09c0 userInfo void * NULL 0x0000000000000000 reserved __NSDictionaryM * 2 key/value pairs 0x0000600000cf0480 The previous action that I did was to Ctrl + Drag from the exploreCell in the ExploreViewController Scene to the RestaurantListViewController Scene, creating a 'Show' Segue. As I am a beginner I am not sure what the error is telling me? Can someone help and show me where I am going wrong?

I have checked this code until I am 'blue in the face', but I can't see why I get an error saying missing closing bracket. // //  ExploreDataManager.swift //  LetsEat3 // //  Created by Tony Hudson on 16/04/2021. // import Foundation class ExploreDataManager {     func  fetch() {         for data in loadData() {         print(data)     } }     fileprivate func loadData() - [[String: AnyObject]] {         guard let path = Bundle.main.path(forResource: "ExploreData", ofType: "plist"), let items = NSArray(contentsOfFile: path) else  {             return [[:]]         }         return items as![[String: AnyObject]]     } } If I add an additional bracket it then reports an additional 'Expected '}' in class? I have counted 5 opening brackets and 5 closing brackets. I even checked to see whether I had mistakenly typed the wrong type of bracket elsewhere in the code! Is this a bug? If not what is the reason. for this error?

I am learning Xcode from Ahmad Sahar's book and somehow I have disconnected the exploreViewController from the navigation controller. I have now progressed far beyond the point where this was connected to the navigation controller, so I Ctrl + Dragged from the button to the navigation controller. However when I ran the project I get a Compile error: Couldn't compile connection: IBCocoaTouchOutletConnection: 0x123ef3a50 (sN1-9E-uLq)  source=IBProxyObject: 0x123ef2be0 (Wnw-oV-gaS) 'Placeholder for UIStoryboardPopoverPresentationSegueTemplate with OID GlU-yO-pRa'  property=anchorView  destination=IBUIButton: 0x120195400 (WOO-Ms-Zlt) 'Button' As I am still learning I am not sure how to fix this problem? If I click on the segue icon it says 'Present as Popover segue' and Segue Actions shows 'instantiation' with a circle but if I click on the circle nothing is listed for the segue. Please help?

I am trying to open the swift file so that I can Ctrl + Drag from the image cell into the swift file that I generated. The file was generated by New File - Cocao Touch class, previously. With the main.storyboard open and then choosing Assistant, I get the ViewController.h for the scene I am in and not the ExploreCell.swift file that I have just generated. The book I am following as I am a beginner, says that I should set the file as automatic but I can't seem to be able to do that. What am I doing wrong?

I am learning Xcode from a book 'iOS Programming for Beginners' and although I am sure I entered the text correctly I get the following error when I click on the Location button. The code builds with out error, so I don't know where the error is! Here is the code: // //  LocationViewController.swift //  LetsEat3 // //  Created by Tony Hudson on 27/04/2021. // import UIKit class LocationViewController: UIViewController, UITableViewDataSource {     @IBOutlet weak var tableView: UITableView!     override func viewDidLoad() {         super.viewDidLoad()     }     func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) - Int {         10     }     func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) - UITableViewCell {         let cell = tableView.dequeueReusableCell(withIdentifier: "locationCell", for: indexPath)         cell.textLabel?.text = "A Cell"         return cell     } } cal=n anyone explain why I get this error?

I am learning to code using iOS 14 Programming for beginners. I was trying to place the Tab Bar buttons and confused the correct view in the scene. I was trying to add them to the Navigation Controller scene, but should have added them to the View controller scene. When I run the code the Cancel button should return to the previous scene, but does not. How do I get rid of the actions that I have made by trying to add the tab bar to the wrong scene, assuming that this is what is causing the button not to work? I have not added any code as I don't think that will serve any purpose at this stage.

I am trying to learn Xcode using iOS 14 Programming for Beginners. I have just created a new View Controller and created a Cocoa Touch class called RestaurantListViewController. In this I had to add 2 collection view stubs and an @IBoutlet var to the UICollectionView. The book then instructs me to click on th View Controller in the document outline, for the view controller I have just created, the click on the Identity Inspector to add the class, but it says no selection? I can't see where I am going wrong? The only warning I get is: Prototype collection view cells must have reuse indentifiers. Here is the code for the class: // //  RestaurantListViewController.swift //  EatOut // //  Created by Tony Hudson on 22/05/2021. // import UIKit class RestaurantListViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate {     @IBOutlet weak var collectionView: UICollectionView!     override func viewDidLoad() {         super.viewDidLoad()         // Do any additional setup after loading the view.     }     func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) - Int {         1     }     func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) - UICollectionViewCell {       return collectionView.dequeueReusableCell(withReuseIdentifier: "restaurantCell", for: indexPath)     } } Please can someone help?