Cocoapods and Most common used library in Swift

Cocoapods and Most common used library in Swift

• 1.
  Dependency Management Cocoapods and the
 most common used library in Swift
• 2.
  Objective • We aregoing to re-create our Weather application using the most popular library that is widely used by iOS developer. • We will see the difference in term of performance between the app created during Mini Project and app created during Library.
• 3.
  Cocoapods • Cocoapods isiOS Dependency Management tool. • Dependency Management tools help to manage your library , you don’t need to worry about the dependency and versioning. • Example of dependency management tool in other language: Composer and Gradle.
• 4.
  Installing Cocoapods • UpdateRuby (Ruby is pre-installed for MAC 10.7 and above) : sudo gem update --system • Download CocoaPods using gem: sudo gem install cocoapods • Install Cocoapods: pod setup
• 5.
  $ mkdir -p$HOME/Software/ruby $ export GEM_HOME=$HOME/Software/ruby $ gem install cocoapods [...] 1 gem installed $ export PATH=$PATH:$HOME/Software/ruby/bin $ pod --version Latest installation code in El Capitan
• 6.
  Install Library usingPod • Go to the path of our Project from terminal • Create our Podfile using this command: -pod init • Open Podfile with Xcode using following command: • open -a Xcode Podfile • Add the library needed between ‘do’ and ‘end’ • Go to your project directory and download the library : pod install
• 7.
  Library repository • Wenavigate to cocoapods.org or cocoacontrols.com to get the Library that can be integrated into our app. • We are going to add the following Library into the • Alamofire • SwiftyJson • Kingfisher • SCLAlertView • Once the app is installed we are going to work with the workspace of the project.
• 8.
  Alamofire • Alamofire isthe most popular networking library for Networking using Swift (AFNetworking for Objective C) • AFNetworking is built on top of Foundation URL loading system. • Refer to documentation for more info.
• 9.
  AFNetworking Sample Code Alamofire.request(.GET,"https://httpbin.org/get", parameters: ["foo": "bar"]) .responseJSON { response in print(response.request) // original URL request print(response.response) // URL response print(response.data) // server data print(response.result) // result of response serialization if let JSON = response.result.value { print("JSON: (JSON)") } } Alamofire.request(.POST, "https://httpbin.org/get", parameters: ["foo": "bar"]) .responseJSON { response in print(response.request) // original URL request print(response.response) // URL response print(response.data) // server data print(response.result) // result of response serialization if let JSON = response.result.value { print("JSON: (JSON)") } } AFNetworking POST request AFNetworking GET request
• 10.
  SwiftyJSON • SwiftyJSON isone of the most helpful library to facilitate the parsing of JSON. • Due to Swift safe-type and optional binding principal, we need to verify the type and nullity when retrieving the JSON. • SwiftyJSON will help us reduce the complexity of doing all that.
• 11.
  Example if let topApps= parsedObject as? NSDictionary { if let feed = topApps["feed"] as? NSDictionary { if let apps = feed["entry"] as? NSArray { if let firstApp = apps[0] as? NSDictionary { if let imname = firstApp["im:name"] as? NSDictionary { if let appName = imname["label"] as? NSString { //3 println("Optional Binding: (appName)") } } } } } if let appName = json["feed"]["entry"][0]["im:name"]["label"].string { println("SwiftyJSON: (appName)") } This code in Swift: Can be simplified to this:
• 12.
  MBProgressHUD • MBProgressHUD isan iOS library that displays a translucent HUD with an indicator. • We use it to inform user that a background thread is being executed. • MBProgressHUD is code written in Objective C. Cocoapods help us to bridge the code from Objective C to Swift.
• 13.
  MBProgressHUD Sample Code MBProgressHUD.showHUDAddedTo(self.view, animated:true) MBProgressHUD.hideHUDForView(self.view, animated: true) MBProgressHUD show a HUD. MBProgressHUD hide a HUD.
• 14.
  Kingfisher • Kingfisher isa lightweight and pure Swift implemented library for downloading and caching images from the web • It is a UIImageView category. New method will be added to UIImageView and you can call the methods to load image from URL import Kingfisher imageView.kf_setImageWithURL(NSURL(string: "http://your_image_url.png")!)
• 15.
  SCLAlertView • SCLAlertView isone of the library that can be found from CocoaControls. • You can create a nicer UIAlertView for your application. SCLAlertView().showWarning("Hello Warning", subTitle: "This is a more descriptive warning text.") // Warning SCLAlertView().showInfo("Hello Info", subTitle: "This is a more descriptive info text.") // Info