如何将Realm数据库传输到应用程序组 [英] How to transfer Realm database to appgroups
问题描述
嘿,我有一个使用Real来保存数据的应用程序.我使用默认的领域文件目录存储应用程序数据,但我想将文件目录移至应用程序组以创建应用程序扩展名.这是我更改文件路径的代码
Hey I have an app that uses Real to persist data. I used the default realm file directory to store the apps data but I would like to move the file directory to app groups in order to create app extensions. Heres my code for changing the file path
var config = Realm.Configuration()
config.fileURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.com.bundle.identifier")!.appendingPathComponent("default.realm")
Realm.Configuration.defaultConfiguration = config
代码完美地更改了文件路径,问题在于更改路径时会擦除数据,因为先前路径中的数据没有被传输.
The code changes the file path perfectly, the problem is that the data gets wiped when I change the path, since the data at the previous path isn't being transferred.
Someone else had a similar question here, but it's very outdated and didn't work
我尝试过这样的传输方法,但是都失败了
I've tried methods of transferring it such as this, but all as failed
migrateData(){
let fileManager = FileManager.default
//Cache original realm path (documents directory)
let originalDefaultRealmPath = realm.configuration.fileURL?.absoluteString
//Generate new realm path based on app group
let appGroupURL: NSURL = fileManager.containerURL(forSecurityApplicationGroupIdentifier: "group.com.groupIndentifier")! as NSURL
let realmPath = appGroupURL.path!.appending("default.realm")
//Moves the realm to the new location if it hasn't been done previously
if (fileManager.fileExists(atPath: originalDefaultRealmPath!) && !fileManager.fileExists(atPath: realmPath)) {
do{
try fileManager.moveItem(atPath: originalDefaultRealmPath!, toPath: realmPath)
}
catch{
print("error")
}
}
let config = Realm.Configuration(fileURL: appGroupURL.absoluteURL)
//Set the realm path to the new directory
Realm.Configuration.defaultConfiguration = config
}
在此先感谢您的帮助!一般来说,我对Swift和编程还是很陌生,所以如果我一无所知,请原谅.
Thanks in advance for help! I'm still fairly new to Swift and programming in general so excuse me if I'm being clueless.
推荐答案
由于@Jay的回答,我得以回答自己的问题.万一其他人需要帮助,这是我的工作:
Thanks to @Jay's answer, I was able to answer my own question. In case anyone else needs help, heres what I did:
let fileManager = FileManager.default
let originalPath = Realm.Configuration.defaultConfiguration.fileURL!
let appGroupURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.com.bundle.identifier")!.appendingPathComponent("default.realm")
do{
try fileManager.replaceItemAt(appGroupURL, withItemAt: originalPath )
}
catch{
print("Error info: \(error)")
}
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