Please Please Help, I can’t get Charts installed properly

[craigflanagan]

I have been at this for many days now. At first I tried just dragging the library over to my
project but that didn’t work. Now I have migrated on to using cocoa pods using the following
pod file for my XCODE 8.1 Obj C project (just a basic single view controller app):

source 'https://github.com/CocoaPods/Specs.git'
use_frameworks!
platform :ios, ’10’
target ‘coco2’ do
pod 'Charts', '~> 3.0.1’
end

When I open the workspace file after the successful running of the pod file I am faced with
a demand to update my project to SWIFT3.0. If I say yes then I get all softs of errors, if I say
no stay at 2.3 (and set the compiler to the legacy swift compiler) I get the following:

Please help I am so stuck and frustrated and I know there are some good people out there willing to lend a hand. Craig

[kutran]

Did you check the following setting in Xcode?

[liuxuan30]

well you have to upgrade your project to swift 3.0 first.. Chart 3.0 is swift 3.0