Painted levels: being fostered fostered fostered

Tags: “iOS” “CocoaPods” “dependencies library” by MrLiuQ Review: QiShare team

Question: In our daily development, we will inevitably use some third-party libraries (such as AFNetworking, SDWebImage…). And those third party libraries may refer to other third party libraries, so we have to introduce other third party libraries. (Old saying: children and grandchildren are endless)

In addition, if a third-party library is updated, you have to manually reintroduce the new library. (It’s a hassle anyway)

  • Need: Is there a tool to help developers manage third-party libraries? When the third-party library is updated, can you update the third-party library in time with some simple commands?

The powerful CocoaPods were born. Today we are going to take a look at CocoaPods and how to install and use it.

CocoaPods

CocoaPods is a library management tool for developing iOS projects. It has more than 55,000 libraries and is used in more than 3 million applications. Using CocoaPods allows you to gracefully extend projects and easily import third-party open source libraries.

Add: CocoaPods official website

2, CocoaPods environment construction:

  • Step 1: You need to install the Ruby environment before installing CocoaPods.

  • Step 2: Use ruby-China’s Ruby mirror source.

$gem sources –remove https://rubygems.org/ $gem sources -a https://gems.ruby-china.com/ To verify that the Ruby image source is ruby-China, use the $gem sources -l command.

  • Step 3: Install cocoaPods:

Run sudo gem install cocoapods (if no read/write permission is available, run sudo gem install -n /usr/local/bin cocoapods instead.)

Basic Usage of CocoaPods

The steps are as follows:

1. Use Terminal to locate the project directory and create a Podfile.

Use the command pod init.

2. Open the Podfile.

Use the command: open Podfile.

3. Search for the framework to be imported.

Use the command: pod search framework name.

4. Write the framework information to the Podfile.
Platform :ios,'10.0' target: do pod'AFNetworking','~>3.2.1' pod'SDWebImage'... endCopy the code

About version range:

symbol meaning
> 0.1 Any version later than 0.1 (excluding 0.1)
> = 0.1 Any version later than 0.1, including 0.1
< 0.1 Any lower than version 0.1 (excluding version 0.1)
< = 0.1 Any version lower than 0.1 inclusive
~ > 0.1.2 Version 0.1.2 to 0.2, excluding 0.2.

Equivalent to >= 0.1.2 and <0.2.0, and always the latest version in your specified range.
Do not specify The default version is the latest version
5. Install the third-party framework

Use pod install (PS: if the current network condition is not good, you can not update the index library, directly use pod install –no-repo-update command.)

Four, for example,

Here xiaobian gives an example of importing AFNetworking and SDWebImage framework W.

  1. Let’s create a new project: QiCocoaPods.

  2. Find the project directory through the terminal and create a new Podfile, as shown below:

  3. Use the pod search AFNetworking command

The following interface appears:

  1. Use the following command:open podfileOpen the Podfile file. Write frame information, as shown in the figure:

  1. Install the specified third-party library: use the commandpod install. The diagram below:

  1. Open the.xcworkspaceFile, start programming. (.xcworkspaceInstead of a.xcodeproj)

Fifth, supplementary q&A

  • Added a:pod installwithpod updateThe difference between?

A:

Pod Install: Install all the required libraries using pod Install for the first time. In subsequent use, libraries that were not previously introduced are introduced. Pod update: Updates all libraries to the latest version in the specified version range.

  • Add 2:pod installwithpod install --no-repo-updateThe difference between?

A:

Pod Install: The local REPo library is updated before installation. Pod install –no-repo-update: install pod directly without updating the local repo library.

Ways to focus on us are:

QiShare(GitHub) QiShare(CocoaChina) QiShare(StackOverflow) QiShare(wechat)

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