swift第三方框架导入步骤：

This is what I completely did for ios-10.2 and Xcode -:8.2.1 (This works great)

1. create a project.

2. Go to terminal

3. give command cd desktop(if project on desktop)

4. cd project name

5. pod init(This created pod file in directory)

6. use this pod fie-:

Uncomment the next line to define a global platform for your project

platform :ios, '10.2'

Comment the next line if you're not using Swift and don't want to use dynamic frameworks

def shared_pods
use_frameworks!
pod 'Alamofire', '~> 4.4'
pod 'SwiftyJSON'
end
target 'Modes' do

Pods for Modes

shared_pods
end
target 'ModesTests' do
inherit! :search_paths

Pods for testing

shared_pods

end

target 'ModesUITests' do
inherit! :search_paths
# Pods for testing
shared_pods

end
MARK-: I added use_frameworks under function shared_pods ( That allowed me to use frameworks) don't put it outside it.

7. Save pod file

8. pod install

9. Close Terminal and all open projects .

10. Go to project directory and open Projectname.xcworkspace.

11. First Clean and Build.

12. import Alamofire

13. Bravo use your frameworks.