问题
Xcode 9.1 Simulator 10.0 OSX 10.12.6
I would like to upload a new build of my sticker pack to iTunes Connect. But Product > Archive is grayed out. So I ran the Simulator and got ""Failed to set plugin placeholders for (name)."
Only one answer anywhere in the whole world -- delete Derived Data Folder. I did and got same error message.
BTW Under General in Xcode the Version is 1. The build is 1.4. Does the build number have to be changed somewhere else as well?
回答1:
What worked for me, Go to your target Build Phases and on "Embedded App Extensions" check the "Copy only when installing" checkbox.
回答2:
I had the same problem today. In my situation I had a different identifier in my original app than in the extension identifier "base". The extension has to have the same identifier as the original app plus something else.
E.g:
- Dummy App:
com.company.dummy-app - Dummy App Extension:
com.company.dummy-app.extensionName
After Xcode told me that, I changed my wrong names to look like above and then the problem occurred:
The problem was, that I had "automatic manage signing" turned on but Xcode didn't recognize that I changed the identifier.
Solution: Just change the identifier again and check if "automatic manage signing" has created a new provisioning profile. Deleting derived data may also helps.
回答3:
It took me a while to find the fix for this. First go to build phases click the X beside the embedded and delete it. This should fix the problem it is what worked for me.
回答4:
This is the solution:
app bundle identifier: com.SohaibSiddique.ShopApp
extension bundle identifier: com.SohaibSiddique.ShopApp.Notification
It may work for you.
回答5:
It may also happen if the bundle identifier of the extension doesn't have the app identifier as a prefix.
E.g. this would raise the OP issue:
- com.example.App
- com.example.AppExtension
Instead:
- com.example.App
- com.example.App.Extension
will work as expected.
回答6:
A clean and rebuild will often fix this issue. If that doesn't work, try removing appex files which often cache items which xcode should have rebuilt:
find ~/Library/Developer/Xcode/DerivedData -name "*.appex" -exec rm -fr {} \;
回答7:
Product->Clean Build Folder
Solved it for me.
回答8:
Click details button in Error prompt and check the error log. In mycase it was "bundleVersion must be set in placeholder attributes for a plugin placeholder", Build version was empty in one of my target led me into this error.
回答9:
You must have different bundleIds for your project and extension.
Example:
- App bundleId: com.companyName.appName
- Extension bundleId: com.companyName.appName.extensionName
I got this error when I set one configuration file for my project and notification service.
I changed the notification service configuration file to the correct one and this fixed my problem.
来源：https://stackoverflow.com/questions/47344160/failed-to-set-plugin-placeholders-message