iOS Developer level : Intermediate

Configuration when this article was written Xcode : Version 11.5 MacOS : 10.15.5 (Catalina)

A working example

Final code can be found in the Resources section below.

What is a cocoapod ?

CocoaPods is an application level dependency manager for the Objective-C, Swift and any other languages that run on the Objective-C runtime, such as RubyMotion, that provides a standard format for managing external libraries.

CocoaPods focuses on source-based distribution of third party code and automatic integration into Xcode projects.

Enough of introduction , let’s be technical…

So to start let us create a framework using xcode.

Xcode -> New -> Project -> Framework

Name It as TTDeviceIdentifier

Inside create a file called DeviceIdentifier

Add following code

import UIKit

public struct DeviceIdentifier {
    public static func getDeviceUID() -> String {
        if let deviceId = UIDevice.current.identifierForVendor?.uuidString {
            return deviceId
        }
        return “”
    }
}

Build once

Next

Create a repo in github TTDeviceIdentifier

Add Readme and Lisence (Select MIT or anything appropriate, I chose MIT)

Now in Terminal

cd /Users/………/MY_Frameworks/cocoapods_learning
git clone https://github.com/TeaTalkInternal/TTDeviceIdentifier.git

again

cd TTDeviceIdentifier
ls

you will see Readme and Lisence files

Now Copy the TTDeviceIdentifier framework you created into current folder (/Users/………/MY_Frameworks/cocoapods_learning/TTDeviceIdentifier)

In Terminal now

git add .
git commit -m “Added TTDeviceIdentifier framework”
git commit -m “Added TTDeviceIdentifier framework”
git push origin master
git tag 1.0.0
git push –tags

Verify in browser if code is available github.com/TeaTalkInternal/TTDeviceIdentifi..

Now Again in terminal cd TTDeviceIdentifier (do ls -al to see TTDeviceIdentifier.xcodeproj there)

cd TTDeviceIdentifier
ls -al

Now

pod init 
pod spec create TTDeviceIdentifier
ls -al

you see this

-rw-r–r– 1 kevin.saldanha 1645257511 252 Aug 11 16:30 Podfile

drwxr-xr-x@ 5 kevin.saldanha 1645257511 160 Aug 11 16:23 TTDeviceIdentifier

-rw-r–r– 1 kevin.saldanha 1645257511 6321 Aug 11 16:49 TTDeviceIdentifier.podspec

drwxr-xr-x@ 5 kevin.saldanha 1645257511 160 Aug 11 16:19 TTDeviceIdentifier.xcodeproj

Now

open -a xcode TTDeviceIdentifier.podspec

Modify podspec file to look like below

Pod::Spec.new do |spec|
spec.name         = “TTDeviceIdentifier”
spec.version      = “1.0.0”
spec.summary      = “Cocoapod for managing network calls in swift.”
spec.description  = “A Cocoapod for managing network calls in swift.”
spec.license       = “MIT”
spec.homepage     = “https://github.com/TeaTalkInternal/TTDeviceIdentifier/”
spec.author             = { “Kevin Vishal” => “vishalkevin11@gmail.com” }
spec.social_media_url   = “https://twitter.com/vishalkevin11”
spec.swift_version = ‘5.0’
spec.platform     = :ios, “12.0”
spec.source       = { :git => “https://github.com/TeaTalkInternal/TTDeviceIdentifier.git”, :tag => “1.0.0” }
spec.source_files  = “TTDeviceIdentifier/**/*.{h,m,swift}”
end

Now in terminal

pod spec lint

You should get something like this

-> TTDeviceIdentifier (1.0.0)

– NOTE  | xcodebuild:  note: Using new build system
– NOTE  | xcodebuild:  note: Building targets in parallel
– NOTE  | [iOS] xcodebuild:  note: Planning build
– NOTE  | [iOS] xcodebuild:  note: Constructing build description
– NOTE  | [iOS] xcodebuild:  warning: Skipping code signing because the target does not have an Info.plist file and one is not being generated automatically. (in target ‘App’ from project ‘App’)

Analyzed 1 podspec. TTDeviceIdentifier.podspec passed validation.

Now our pod is actually ready . we can Test by adding an example project. This example project can be shipped into repo

So now create a simple viewcontroller base application using xcode and save your project here

Xcode -> New -> Project -> Single View App

Name it Example

And Save here

(/Users/………/MY_Frameworks/cocoapods_learning/TTDeviceIdentifier)

Now in terminal

cd Example
pod init
open -a xcode Podfile

add below line after # Pods for Example

pod “TTDeviceIdentifier”, :path => “../TTDeviceIdentifier”

Now in terminal

pod install
open -a xcode Example.xcworkspace

In ViewController.swift added the following in viewDidLoad()

print(DeviceIdentifier.getDeviceUID())

and add import TTDeviceIdentifier at top.

So your ViewController looks like this

import UIKit
import TTDeviceIdentifier

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        print(DeviceIdentifier.getDeviceUID())
    }

}

Run the project you should see UUID in xcode console

cd ..
git add .  
git commit -m “Ädded Sample Project”
git push origin master
cd TTDeviceIdentifier
ls

Podfile TTDeviceIdentifier.podspec TTDeviceIdentifier
TTDeviceIdentifier.xcodeproj

pod trunk register ke*****in@gmail.com 'Kevin Vishal' --description='macbook pro'

you will be asked to complete your registration

pod trunk push

you should get this

🎉 Congrats

🚀 TTDeviceIdentifier (1.0.0) successfully published

📅 August 11th, 17:48

🌎 cocoapods.org/pods/TTDeviceIdentifier

👍 Tell your friends!

Now your pod is up

You can create a xcode project

Xcode -> New -> Project -> Single View App

Name it SampleApp

Save it in Desktop

In terminal

cd to the project folder

cd ˜/Desktop/SampleApp
pod init
open -a xcode Podfile

add below line after # Pods for SampleApp

pod ‘TTDeviceIdentifier’, ‘~> 1.0’

Now in terminal

‘pod install’

You have the pod installed

open -a xcode SampleApp.xcworkspace

We stop here …

Resources:

cocoapods.org/pods/TTDeviceIdentifier

github.com/TeaTalkInternal/TTDeviceIdentifier

My Reference :

youtube.com/watch?v=oZSZ8mievUU

en.wikipedia.org/wiki/CocoaPods#:~:text=Coc...