如何将默认域路径设置为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())  

该应用程序因以下错误而崩溃

  

由于未捕获的异常“RLMException”而终止应用程序，原因：'open（）失败：操作不被允许'

如何解决此问题？

Answer 1

您正在设置的默认域路径是容器目录。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

Answer 2

在0.97版本中删除

RLMRealm.setDefaultRealmPath()，您应该使用：Tim answer

var config = RLMRealmConfiguration.defaultConfiguration()
config.path = realmPath
RLMRealmConfiguration.setDefaultConfiguration(config)

Answer 3

现在又改变了，现在：

let configuration = RLMRealmConfiguration.default()
configuration.pathOnDisk = realmPath
RLMRealmConfiguration.setDefault(configuration)

Answer 4

在Xamarin中，您可以执行以下操作将Xamarin iOS应用的Realm默认配置路径从Document更改为Library目录：

// Get path of Library directory first

var directoryLib = Environment.GetFolderPath(Environment.SpecialFolder.Resources);

//Configure your own path

var myOwnRealmPath = Path.Combine(directoryLib, "boards.realm");
RealmConfiguration.GetPathToRealm(myOwnRealmPath);

// Change default configuration path to your own (Here I have changed to Library directory)

RealmConfiguration.DefaultConfiguration = new RealmConfiguration(myOwnRealmPath);

//Get Realm Instance from your own designed path

_realm = Realm.GetInstance(RealmConfiguration.DefaultConfiguration);