IOS – Main Thread Checker: UI API called on a background thread: -[UIApplication delegate] PID: 902, TID: 13120, Thread name: (none), Queue name: NSOperationQueue 0x604000037a20 (QOS: UNSPECIFIED), QoS: 0 Backtrace:

Solution : use DispatchQueue.main.async { // Correct }     Updating UI from a Completion Handler Long-running tasks such as networking are often executed in the background, and provide a completion handler to signal completion. Attempting to read or update the UI from a completion handler may cause problems. let task = URLSession.shared.dataTask(with: url) { […]

!] Unable to add a source with url `https://github.com/CocoaPods/Specs.git` named `master-1`. You can try adding it manually in `~/.cocoapods/repos` or via `pod repo add`.

Open Terminal and run this command that will add the source on master branch on cocoapod repos .   $ cd ~/.cocoapods/repos $ git clone https://github.com/CocoaPods/Specs.git master     if again issuing already has master branch and it’s not empty and completely remove cocoapod and install from new . How to uninstall cocoapod completely and install new

Swift 3 / 4 get current location with location manager .

Step – 1 :  First define LocationManager . And Current location of CLLocaion .   var manager = CLLocationManager() var currentLocation: CLLocation! Step 2 : In ViewDidController get Current location with location manager . That’s it .   manager.requestWhenInUseAuthorization()                  if (CLLocationManager.authorizationStatus() == CLAuthorizationStatus.authorizedWhenInUse ||       […]

Swift 3 /4 take photo from camera or gallery and show it .

Step One : First create a project and take imageView and a button to capture image . Connect it to ViewController . Step Two : Copy this code and run . hope it will be done . 😀    class ImageCapture: UIViewController , UIImagePickerControllerDelegate,UIPopoverControllerDelegate,UINavigationControllerDelegate{      @IBOutlet var imageViewWeight: UIImageView!      var imagePicker:UIImagePickerController?=UIImagePickerController() override func viewDidLoad() { […]

IOS 10 : TableView tutorial with Swift 3 – most easy way

import UIKit class ViewController: UIViewController , UITableViewDelegate , UITableViewDataSource{ var names = [“arif”,”hasnat”,”ios”,”developer”] @IBOutlet weak var tableView: UITableView! override func viewDidLoad() { super.viewDidLoad() tableView.delegate = self tableView.dataSource = self } func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { return names.count } func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { let cell […]