Issue when using in non-swift project

[robbash]

Hey @kmorkos.

Thanks for this great plugin!

I open this issue as I ran into problems after adding it to my project. As it turned out the problem occurred because my project wasn't create with Swift support.

After some time searching I found the issue #16049 on the flutter repository, and by fiddling around with what is suggested, I could finally make my project build and run again, successfully using your plugin.

I think it could be worth mentioning in your docs that this problem exists, and how to resolve it.

Cheers!

[nanunh]

Here are a few documentation related topics that would help a first time user of this GREAT plugin...

Issue 1 - export LANG=en_US.UTF-8 issue
If you see the error -
CocoaPods requires your terminal to be using UTF-8 encoding.

Solution
The fix is - If you have a .bash_profile add the following line to it
export LANG=en_US.UTF-8
Or else If you have a .profile add the following line to it
export LANG=en_US.UTF-8

Issue 2 - no platform was specified error issue
If you see the following error -
Error output from CocoaPods:
↳
[!] Automatically assigning platform ios with version 12.1 on target Runner because no platform was specified. Please specify a platform for this target in your Podfile.

Solution
The solution is to Open YOURPROJECTNAME/ios/Podfile
Edit/Add the line shown below - 12.1 should be the appropriate IOS “target” version
# Uncomment this line to define a global platform for your project
platform :ios, '12.1'

Issue 3 - does not specify a Swift version issue

If you have added the following four lines at appropriate locations in your Podfile

target 'Runner' do
use_frameworks!
config.build_settings['ENABLE_BITCODE'] = 'NO'
config.build_settings['SWIFT_VERSION'] = '4.0'

And STILL encounter the following error

Running pre install hooks
[!] Unable to determine Swift version for the following pods:
- flutter_photokit does not specify a Swift version and none of the targets (Runner) integrating it have the SWIFT_VERSION attribute set. Please contact the author or set the SWIFT_VERSION attribute in at least one of the targets that integrate this pod. /usr/local/Cellar/cocoapods/1.6.0/libexec/gems/cocoapods-1.6.0/lib/cocoapods/installer/xcode/target_validator.rb:115:in `verify_swift_pods_swift_version'

Solution
Then what worked for me was to add the following line to the Podfile

ENV['SWIFT_VERSION'] = '4.0'

DISCLAIMER - All the stuff above was collated from different links