问题
I am trying some code to open the iPod Library using the simulator but the app crashes with this error:
MPMediaLibrary: Unable to launch iPod library server: application not found
Do I need an actual iPhone to test this code?
回答1:
Yes you need to test on a device to access the media library.
回答2:
I've had some success using MPMediaLibrary / MPMediaQuery on the simulator (not playing music, but at least able to query for items) and xcode 4.6.3
I used iFunBox to copy these files from my device:
'Raw File System'/iTunes_Control/iTunes/MediaLibrary.sqlitedb
'Raw File System'/iTunes_Control/iTunes/MediaLibrary.sqlitedb-shm
'Raw File System'/iTunes_Control/iTunes/MediaLibrary.sqlitedb-wal
'Raw File System'/iTunes_Control/iTunes/Artwork
onto my mac in the folder:
"~/Library/Application Support/iPhone Simulator/6.1/Media/iTunes_Control/iTunes/"
回答3:
Clarification to answer JosephH:
it even works in Xcode 6 but the files should be placed in a folder:
"~/Library/Developer/CoreSimulator/Devices/########-####-####-####-############/data/Media/iTunes_Control/iTunes"
where ########-####-####-####-############ - will be different for different versions of the simulator phone
回答4:
I was trying to figure this out as well and since you basically need to use all of the answers given here and it is somewhat outdated I figured I would write a little how to.
I will try to keep this up to date so everyone who wants to use this ability will be able to use it without to much trouble
回答5:
To add to @JosephH and @Rinat Abidullin's answers, I also found that it is possible to access the music files themselves from the Simulator (at least using the iOS 8 and 9 Simulators from Xcode 7.3). For this to work, I copied the following folders from my iPhone to the corresponding folder on my Mac (in addition to the files @JosephH mentioned):
/var/mobile/Media/iTunes_Control/Music/var/mobile/Media/Purchases
The files can then be played by using an AVAudioSession to open the MPMediaItemPropertyAssetURL.
Update: There is also a very good sample project that can be used to easily test this out: GVMusicPlayerController.
来源：https://stackoverflow.com/questions/3159716/can-i-access-ipod-library-on-simulator