iOS
- Getting started with iOS
- Learn Tutorial
- Awesome Book
- Awesome Community
- Awesome Course
- Awesome Tutorial
- Awesome YouTube
- 3D Touch
- Accessibility
- ADDING A SWIFT BRIDGING HEADER
- AFNetworking
- AirDrop
- AirPrint tutorial in iOS
- Alamofire
- App Submission Process
- App Transport Security (ATS)
- App wide operations
- AppDelegate
- Application rating/review request
- ARC (Automatic Reference Counting)
- attributedText in UILabel
- Auto Layout
- AVPlayer and AVPlayerViewController
- AVSpeechSynthesizer
- AWS SDK
- Background Modes
- Background Modes and Events
- Basic text file I/O
- Block
- CAAnimation
- Cache online images
- CAGradientLayer
- CALayer
- Carthage iOS Setup
- CAShapeLayer
- Categories
- CGContext Reference
- Chain Blocks in a Queue (with MKBlockQueue)
- Change Status Bar Color
- Checking for Network Connectivity
- Checking iOS version
- CLLocation
- CloudKit
- Codable
- Code signing
- Concurrency
- Configure Beacons with CoreBluetooth
- Contacts Framework
- Content Hugging/Content Compression in Autolayout
- Convert HTML to NSAttributed string and vice verse
- Convert NSAttributedString to UIImage
- Core Data
- Core Graphics
- Core Location
- Core Motion
- Core SpotLight in iOS
- CoreImage Filters
- Create .ipa File to upload on appstore with Applicationloader
- Create a Custom framework in iOS
- Create a video from images
- Creating an App ID
- CTCallCenter
- Custom fonts
- Custom Keyboard
- Custom methods of selection of UITableViewCells
- Custom methods of selection of UITableViewCells
- Custom UITextField
- Custom UIViews from XIB files
- Cut a UIImage into a circle
- CydiaSubstrate tweak
- Debugging Crashes
- Deep Linking in iOS
- DispatchGroup
- Dynamic Type
- Dynamically updating a UIStackView
- EventKit
- Extension for rich Push Notification - iOS 10.
- Face Detection Using CoreImage/OpenCV
- FacebookSDK
- Fastlane
- FCM Messaging in Swift
- FileHandle
- GameCenter Leaderboards
- GameplayKit
- GCD (Grand Central Dispatch)
- Graph (Coreplot)
- Guideline to choose best iOS Architecture Patterns
- Handle Multiple Environment using Macro
- Handling URL Schemes
- Healthkit
- iBeacon
- IBOutlets
- In-App Purchase
- Initialization idioms
- iOS - Implementation of XMPP with Robbie Hanson framework
- iOS 10 Speech Recognition API
- iOS Google Places API
- iOS TTS
- Key Value Coding-Key Value Observation
- Keychain
- Load images async
- Localization
- Make selective UIView corners rounded
- Managing the Keyboard
- MKDistanceFormatter
- MKMapView
- ModelPresentationStyles
- MPMediaPickerDelegate
- MPVolumeView
- Multicast Delegates
- MVP Architecture
- MVVM
- MyLayout
- Navigation Bar
- NSArray
- NSAttributedString
- NSBundle
- NSData
- NSDate
- NSHTTPCookieStorage
- NSInvocation
- NSNotificationCenter
- Add and remove observer for name
- Adding an Observer
- Adding/Removing an Observer with a Block
- Observing a Notification
- Posting a Notification
- Posting a Notification with Data
- Removing Observers
- NSPredicate
- NSTimer
- NSURL
- NSURLConnection
- NSURLSession
- NSUserActivity
- NSUserDefaults
- Objective-C Associated Objects
- OpenGL
- Passing Data between View Controllers
- Passing Data between View Controllers (with MessageBox-Concept)
- PDF Creation in iOS
- plist iOS
- Profile with Instruments
- Push Notifications
- QR Code Scanner
- Realm
- Resizing UIImage
- Rich Notifications
- Runtime in Objective-C
- Safari Services
- Security
- Segues
- Set View Background
- Simulating Location Using GPX files iOS
- Simulator
- Simulator Builds
- SiriKit
- Size Classes and Adaptivity
- Size Classes and Adaptivity
- SLComposeViewController
- Snapshot of UIView
- SqlCipher integration
- StoreKit
- Storyboard
- Swift and Objective-C interoperability
- Swift: Changing the rootViewController in AppDelegate to present main or login/onboarding flow
- SWRevealViewController
- UI Testing
- UIActivityViewController
- UIAlertController
- UIAppearance
- UIBarButtonItem
- UIBezierPath
- UIButton
- UICollectionView
- UIColor
- UIControl - Event Handling with Blocks
- UIDatePicker
- UIDevice
- UIFeedbackGenerator
- UIFont
- UIGestureRecognizer
- UIImage
- UIImagePickerController
- UIImageView
- UIKit Dynamics
- UIKit Dynamics with UICollectionView
- UILabel
- UILabel text underlining
- UILocalNotification
- UINavigationController
- UIPageViewController
- UIPheonix - easy, flexible, dynamic & highly scalable UI framework
- UIPickerView
- UIRefreshControl TableView
- UIScrollView
- UIScrollView AutoLayout
- UIScrollView with StackView child
- UISearchController
- UISegmentedControl
- UISlider
- UISplitViewController
- UISplitViewController
- UIStackView
- UIStoryboard
- UISwitch
- UITabBarController
- UITableView
- UITableViewCell
- UITableViewController
- UITextField
- UITextField Delegate
- UITextView
- UIView
- UIViewController
- UIWebView
- Universal Links
- Using Image Aseets
- UUID (Universally Unique Identifier)
- WCSessionDelegate
- WKWebView
- Xcode Build & Archive From Command Line
- XCTest framework - Unit Testing
iOS NSNotificationCenter
Introduction
iOS notifications are a simple and powerful way to send data in a loosely coupled way. That is, the sender of a notification doesn't have to care about who (if anyone) receives the notification, it just posts it out there to the rest of the app and it could be picked up by lots of things or nothing depending on your app's state.
Source : - HACKING with Swift
Parameters
| Parameter | Details |
|---|---|
| name | The name of the notification for which to register the observer; that is, only notifications with this name are used to add the block to the operation queue. If you pass nil, the notification center doesn’t use a notification’s name to decide whether to add the block to the operation queue. |
| obj | The object whose notifications the observer wants to receive; that is, only notifications sent by this sender are delivered to the observer. If you pass nil, the notification center doesn’t use a notification’s sender to decide whether to deliver it to the observer. |
| queue | The operation queue to which block should be added. If you pass nil, the block is run synchronously on the posting thread. |
| block | The block to be executed when the notification is received. The block is copied by the notification center and (the copy) held until the observer registration is removed. |
Remarks
An NSNotificationCenter object (or simply, notification center) provides a mechanism for broadcasting information within a program. An NSNotificationCenter object is essentially a notification dispatch table.
For more info, check out the Apple Documentation here
NSNotificationCenter Related Examples
- Add and remove observer for name
- Adding an Observer
- Adding/Removing an Observer with a Block
- Observing a Notification
- Posting a Notification
- Posting a Notification with Data
- Removing Observers
