iOS8 extension needs own provisioning profile?

Question

I am starting an iOS 8 extension but I can't run it on my device. The error when trying to run it is:

No matching provisioning profiles found

The provisioning profile specified in your build settings (“ExtensionName”) has an AppID of net.company.AppName which does not match your bundle identifier net.company.AppName.ExtensionName. Xcode can resolve this issue by downloading a new provisioning profile from the Member Center.

1. Do I need a separate provisioning profile for both the main app and the extension ?
2. Should they share a bundle identifier (by default it adds the extension name to the bundle identifier, so perhaps not) ?
3. If it has a separate bundle identifier how is that reflected in the provisioning profile (if there is a separate one) ?

Answer 1

It would seem that Xcode would prefer it that way, however there's nothing stopping you from using a wildcard profile until you want to do an Adhoc or Release to the App Store. More to the point of your question though, for every target that you have, you need a profile and bundle ID. So yes, you "need" another provisioning profile for your Extension, although I expect Apple to streamline this process.

All in all, it's probably best to just use a WildCard dev profile until you need a provisioning profile. Remember this is all a beta, and they're still working on pretty much everything.

Answer 2

You do need a separate provisioning profile for you extension but with the same certificate your main app has. When you are creating a new provisioning profile, your Extension's app id will also appear in the list, choose that, and proceed to create a new provisioning profile.

Also choose that provisioning profile in the target of your extension.

Answer 3

I've located this documentation pertaining to App Extensions. If you read the bottom of page 20 if seems that using the same distribution certificate is actually suggested. I've gone ahead and changed my bundle identifier for the Today Extension to extend my applications. For example, com.DeveloperName.AppName.TodayExtension, created an App ID in the Dev Center to correspond with that, and created a distribution profile for it. My app +Quotes has successfully been updated by following these steps. I have not experienced any issues with the app or extension, but Xcode does seem to get a little confused when trying to auto assign the correct provisioning profiles for my extension now. Selecting them manually solves this.

Answer 4

I simply use "Automatically manage sign in" until I need to push to App store. This works out of the box with simulators, haven't tried with devices yet.

Few pointers for Appstore Build:

1. I created one wildcard id for every notification extension, but the prefix of this wildcard bundle id should match your app's bundle id as prefixed. If it's not like this, this error will come up: "Embedded binary's bundle identifier is not prefixed with the parent app's bundle identifier". So, if your app's bundle-id is: "com.companyName.appName", the wildcard bundle-id for your extension should be "com.companyName.appName.*". You can then replace * with a specific notification extension in the XCode. Note apple only allows one period(".") after the app's bundle id for naming your extension's bundle id.
2. The version and build number of your extension should match that of your app.
3. Once App Id is created, create a distribution provisioning profile with this and use it in XCode.

Answer 5

Extensions are separate targets from the host app. You have to treat them as though they are separate apps with different bundle identifiers and different provisioning profiles.

It's best if you just create them during testing instead of using wildcards because you may need to test some capabilities that you enabled, for example App Group so that your extension and host app can access the same container.

Note that if you want to have any capabilities enabled for your host app and extensions, you have to enable them individually for all of them.