cocoa - 如何将默认 Realm 路径设置为 App Groups 目录

Question

我正在尝试将默认 Realm 路径设置为 App Groups 目录。

let directory: NSURL = NSFileManager.defaultManager().containerURLForSecurityApplicationGroupIdentifier("groups.prasanna.appName")!  
RLMRealm.setDefaultRealmPath(directory.absoluteString!)  
println(RLMRealm.defaultRealmPath())  

应用程序崩溃并出现以下错误

Terminating app due to uncaught exception 'RLMException', reason: 'open() failed: Operation not permitted'

我该如何解决这个问题？

Answer 1

您设置的默认 Realm 路径是您的容器目录。你必须附加一个文件名才能工作:

let directory: NSURL = NSFileManager.defaultManager().containerURLForSecurityApplicationGroupIdentifier("groups.prasanna.appName")!
let realmPath = directory.path!.stringByAppendingPathComponent("db.realm")
RLMRealm.setDefaultRealmPath(realmPath)
println(RLMRealm.defaultRealmPath()) // should be realmPath