iOS

In iOS, we don't have Alarm manager.But we will use local notification as an alarm manager. We will play the sound as like alarm. Code:          let notification = UILocalNotification ()         notification. soundName = "alarm.mp3" // add soundfile to your project and put the name here         notification. timeZone = NSTimeZone . local         notification. userInfo = data  as ? [ String : AnyObject ] //set the notification data here and get and process in the receiving end         notification. fireDate = NsDate()  // set the alarm time          UIApplication . shared . scheduleLocalNotification (notification)   // fire the notification

The below function was used to return the smallest distance location arrays from Location you sent. Also, the mutable array must have a model with lat, lang and distance values. Code:     func matchLocation(currentLocation: CLLocation ,geoPlace: NSMutableArray ) -> NSMutableArray {                  var smallestDistanceArray = NSMutableArray ()                  for location in geoPlace {             let tempLocation = location             let markLocation: CLLocation = CLLocation (latitude: tempLocation. latitude , longitude: tempLocation. longitide )             let distance = markLocation. distance (from: currentLocation)              if   distance < Double (tempLocation. distance ) {         ...

If you are using location based values in all the screen of apps then its a better to implement as a singleton class.First import the core location.The class will be as follows. Code: import UIKit import CoreLocation protocol LocationServiceDelegate {     func tracingLocation(currentLocation: CLLocation )     func tracingLocationDidFailWithError(error: NSError ) } class LocationSingleton: NSObject , CLLocationManagerDelegate {     var locationManager: CLLocationManager ?     var lastLocation: CLLocation ?     var delegate: LocationServiceDelegate ?     static let sharedInstance: LocationSingleton = {         let instance = LocationSingleton ()         return instance     }()          override init () {         super . init ()         self . lo...

If the user is started typing in the text field and if the user taps on the view then keyboard wants to be dismissed then as follows. Code: class  ViewController: UIViewController , UIGestureRecognizerDelegate { } extension ViewController {      func hideKeyboardWhenTappedAround() {         let tap: UITapGestureRecognizer = UITapGestureRecognizer (target: self , action: #selector ( ViewController . dismissKeyboard ))         tap. cancelsTouchesInView = false         view . addGestureRecognizer (tap)     }          func dismissKeyboard() {         view . endEditing ( true )     } }

If you want to display the date as time only with an hour and minutes then follow the code.                 Code:                 let dates =  NSDate ()                 let dateFormater1 = DateFormatter ()                 dateFormater1. dateFormat =  "h:mm a"                 let dateString =  dateFormater1. string (from:dates    as ! Date )

Sort the date array using for loop is not a great way.So we can use the below method to sort the array of dates Code:              let  DateSorted = NSMutableArray (array:datearray. sortedArray (using: [ NSSortDescriptor (key: "date" , ascending: true )])) The array model contains the key attribute named as the date.So we used the key value as date and sort using ascending order.

         Check the switch status. Code: print ( "Check " , (switch. isOn ) ? "True" : "false" ) Print the Boolean value. Code: print ( "Check " , (BoolVariable ) ?  "True"  :  "false" )