Using CocoaPods for Objective-C Library Management

Presented at OSDC.tw 2013

Transcript

1. Using CocoaPods for Objective-C Library Management Richard Lee Polydice, Inc.
2. iOS Dev Since 2010 Richard Lee @dlackty everywhere
4. Who know this?
5. Three20 •UI collections & utilities for iOS •Derived from old Facebook for iPhone •#1 starred Objective-C project on GitHub •Where I started my journey to OSS •Abandoned project for around a year though •Also, Three20 is notorious for...
6. It is so hard to add Three20 to my project .
7. Cocoa library installation Install Cocoa library is hard because •Library / framework dependencies •Automatic reference counting v.s. non-ARC •Header files import dependencies •Compiler choices (gcc / gcc-llvm / clang) •Xcode / iOS version differences
8. UIViewController NSArray TTNavigator FBGraphObject PSTCollectionView AFNetworkOperationQueue Even worse, there is no namespace in Objective-C
9. CocoaPods
10. CocoaPods’s goals •Make working with dependencies simple •Improve library discoverability and engagement
11. Podfile lists the dependencies of your app How CocoaPods works? Podfile.lock locks the versions of pods Podspec contains specs of pods Pod represents a Cocoa library
12. Start using CocoaPods today! Create your Podfile Install dependencies Install CocoaPods Then you’re ready to go!
13. Install CocoaPods: $ [sudo] gem install cocoapods $ pod setup
14. Sample Podfile platform :ios, :deployment_target => '5.0' pod 'Nimbus/Core' pod 'Nimbus/NetworkControllers' pod 'Nimbus/WebController' pod 'AFNetworking' pod 'BlocksKit', '=1.5.2' pod 'SSPullToRefresh', '>=1.0.0' pod 'SDURLCache' pod 'Facebook-iOS-SDK' pod 'iCookSDK', :git => "git@..."
15. Install dependencies: $ pod install
16. Open app.xcworkspace and everything is done!
17. Nice! But...what if, there’re no Podfile available for my desired library?
18. Create Podspec Podspec describes library’s •Basic infos (Name / Description / Version) •Where to download? (Mostly Git) •Copyright info (Author and license) •Source files / Header files / Resource files •Compile settings •Library dependencies
19. Create Podspec: $ pod spec create OSDCView Lint Podspec: $ pod spec lint OSDCView
20. CocoaPods’s goals •Make working with dependencies simple •Improve library discoverability and engagement
21. Find Pods from CocoaPods.org
22. Find Docs from CocoaDocs.org
23. Find UIs from CocoaControls.com
24. You can be part of us! The app universe need your help! •Release open source libraries •Write Podspec for others •Maintain current Podspecs Just send pull requests to CocoaPods repos!
25. Thank you for listening!
26. Q&A?