Keith的回答很好——我只是想指出，因为Cocoapods 0.36开始支持动态框架，如果你正在使用“use_frameworks!”，并且你希望移除Cocoapods，你必须这样做:

在Build Phases下删除Embed Pods Frameworks阶段。

$ sudo gem install cocoapods-deintegrate cocoapods-clean
$ pod deintegrate
$ pod clean
$ rm Podfile

使用这些终端的命令(不要忘记在新行开始使用sudo):

open:YourDir YouName$ sudo gem uninstall cocoapods
Password:?
Remove executables:
    pod, sandbox-pod

in addition to the gem? [Yn]  Y
Removing pod
Removing sandbox-pod
Successfully uninstalled cocoapods-1.4.0
open:YourDir YourName$ gem list --local | grep cocoapods
cocoapods-core (1.4.0)
cocoapods-deintegrate (1.0.2)
cocoapods-downloader (1.1.3)
cocoapods-plugins (1.0.0)
cocoapods-search (1.0.0)
cocoapods-stats (1.0.0)
cocoapods-trunk (1.3.0)
cocoapods-try (1.1.0)

逐个卸载列表，如下所示:

open:YourDir YourName$ sudo gem uninstall cocoapods-core
Successfully uninstalled cocoapods-core-1.4.0
open:YourDir YourName$ sudo gem uninstall cocoapods-trunk
Successfully uninstalled cocoapods-trunk-1.3.0
open:YourDir YourName$ sudo gem uninstall cocoapods-try
Successfully uninstalled cocoapods-try-1.1.0
open:YourDir YourName$ gem list --local | grep cocoapods
open:YourDir YourName$ sudo gem uninstall cocoapods-stats
Successfully uninstalled cocoapods-stats-1.0.0
open:YourDir YourName$ sudo gem uninstall cocoapods-search
Successfully uninstalled cocoapods-search-1.0.0
open:YourDir YourName$ sudo gem uninstall cocoapods-downloader
Successfully uninstalled cocoapods-downloader-1.1.3
open:YourDir YourName$ sudo gem uninstall cocoapods-plugins
Successfully uninstalled cocoapods-plugins-1.0.0
open:YourDir YourName$ gem list --local | grep cocoapods
cocoapods-deintegrate (1.0.2)
open:YourDir YourName$ sudo gem uninstall cocoapods-deintegrate
Successfully uninstalled cocoapods-deintegrate-1.0.2
open:YourDir YourName$ sudo gem uninstall cocoapods-stats
Successfully uninstalled cocoapods-stats-1.0.0
open:YourDir YourName$ sudo gem uninstall cocoapods-search
Successfully uninstalled cocoapods-search-1.0.0
open:YourDir YourName$ sudo gem uninstall cocoapods-downloader
Successfully uninstalled cocoapods-downloader-1.1.3
open:YourDir YourName$ sudo gem uninstall cocoapods-plugins
Successfully uninstalled cocoapods-plugins-1.0.0
open:YourDir YourName$ gem list --local | grep cocoapods
cocoapods-deintegrate (1.0.2)
open:YourDir YourName$ sudo gem uninstall cocoapods-deintegrate
Successfully uninstalled cocoapods-deintegrate-1.0.2

从终端cd移动到项目文件夹。下面的步骤有助于将pod从项目中分离出来

$ sudo gem install cocoapods-deintegrate cocoapods-clean
$ pod deintegrate
$ pod clean
$ rm Podfile

然后只需打开项目文件，并删除Pod文件夹，如果它仍然在项目资源管理器的红色。构建项目……它准备好了!!

详细的图形表示

如果你只想删除一个pod，并保留其他你可能已经安装的pod，打开app目录中的podfile并删除你想删除的pod。然后使用终端导航到你的应用目录并输入:

pod update

这将删除您从podfile中删除的pod。你将在终端中看到它已被删除:

Analyzing dependencies
Removing FirebaseUI
Removing UICircularProgressRing

注意，这个方法也会拉出podfile中其他pod的任何更新。你可能想要也可能不想要。