Hey there, let's work through this annoying SDWebImage Pod issue you're dealing with. I’ve helped folks fix similar problems before, so here are some step-by-step solutions to get your project back up and running smoothly:

1. Do a full clean of Pod caches and residual files #

Corrupted caches are often the culprit here. Let's wipe everything related to Pods and start fresh:

• First, close Xcode completely to avoid file locks
• Run these commands in your terminal, one by one:

  pod deintegrate
  pod clean
  rm -rf ~/Library/Caches/CocoaPods
  rm -rf Pods
  rm Podfile.lock
  

These commands will fully remove your project's Pod integration, cached files, the Pods folder, and the lock file—no leftover wonky configs to mess things up.

2. Double-check your Podfile configuration #

Even if you think it matches other working Pods, a tiny typo or misconfiguration could be the problem:

• Verify the SDWebImage line is correctly written, like:

  pod 'SDWebImage'
  

  (If you need a specific version, use something like pod 'SDWebImage', '~> 5.0'—just make sure there are no spelling errors)
• Confirm your platform target at the top of the Podfile meets SDWebImage's minimum requirement (e.g., platform :ios, '13.0'—check SDWebImage's docs if you're unsure)

3. Reinstall Pods and verify project settings #

After cleaning up, let's rebuild the Pods setup:

• Run pod install in your terminal. Wait for it to finish, and keep an eye out for any red error messages—those will clue you in if there's a source or version issue.
• Critical step: Open your project using the .xcworkspace file, not the .xcodeproj file! This is a super common mistake that leads to missing modules.
• Check your project's Build Settings:
  • Find Framework Search Paths and ensure it includes $(inherited) and the path to Pods/SDWebImage
  • Find Other Linker Flags and make sure $(inherited) is present here too

4. Clear Xcode's build cache #

Xcode's internal cache can sometimes hold onto old, broken references:

• In Xcode, go to Product > Clean Build Folder (use the shortcut Cmd+Shift+K for speed)
• Then run Product > Build to recompile your project from scratch

5. Fix CocoaPods source issues (if needed) #

If the above steps don't work, your local Pod source might be outdated or corrupted:

• Run pod repo update to refresh your local copy of the Pod specs
• If you're having trouble accessing the default trunk source, you can temporarily use a mirror to install SDWebImage:

  pod repo remove trunk
  pod repo add trunk https://mirrors.tuna.tsinghua.edu.cn/git/CocoaPods/Specs.git
  

Just remember to switch back to the original trunk source later if you need other Pods.

Final check #

Once you've completed these steps, go back to your code:

import UIKit
import FirebaseDatabase
import FirebaseStorage
import SDWebImage

Recompile your project—you should now be able to import SDWebImage without that "No such module" error. If you still run into issues, look closely at any error messages from pod install—they usually point straight to the root problem.

内容的提问来源于stack exchange，提问作者Alex. E