Question

大家好我试图创建一个使用Realm对象服务器同步数据的ios应用程序但是有些东西我不见了

我在我的服务器上安装了相应的Realm对象服务器（远程）我可以正确访问仪表板

我可以使用Syncuser登录

但我有同步数据的问题..当我打开应用程序我登录用户但之后（我无法同步任何）

我在网上搜索了一个完整的例子但没有成功任何人都可以建议一个简单易用的示例，使用realm sync与swift？

由于

Answer 1

这是我使用RealmSwift的聊天应用程序的实际实现。我使用了一个名为Message定义的模型对象：

class Message: Object {
    dynamic var userId = ""
    dynamic var name = ""
    dynamic var text = ""
    dynamic var dateCreated = NSDate()
}

接下来，我使用创建了一个控制器来发送和同步消息：

// Instance variables
var messages: Results<Message>!
var token: NotificationToken!
var configuration: Realm.Configuration!

override func viewDidLoad() {
    super.viewDidLoad()

    // Your viewDidLoad implementation

    self.setupRealm()

}

接下来是Realm的设置方法。如Real Documentation中所述，如果Realm具有只读权限，则必须使用异步打开领域中所述的asyncOpen API。在没有read-only的情况下打开asyncOpen领域会导致错误。

private func setupRealm() {

    let serverURL = URL(string: "http://your.server.ip:9080")!
    let credentials = SyncCredentials.usernamePassword(username: "example@mail.com", password: "password")

    SyncUser.logIn(with: credentials, server: serverURL) { user, error in
        if let user = user {
            let syncURL = URL(string: "realm://your.server.ip:9080/~/Message")!
            let syncConfig = SyncConfiguration(user: user, realmURL: syncURL)
            self.configuration = Realm.Configuration(syncConfiguration: syncConfig)
            self.setupDataSource()

        } else if let error = error {
            // handle error
            debugPrint("error: \(error.localizedDescription)")
        }
    }

}

private func setupDataSource() {

    Realm.asyncOpen(configuration: self.configuration) { realm, error in
        if let realm = realm {
            // Realm successfully opened, with all remote data available
            self.messages = realm.objects(Message.self).sorted(byKeyPath: "dateCreated", ascending: true)
            self.token = self.messages.addNotificationBlock({ (changes: RealmCollectionChange) in
                debugPrint("Message update event")
                self.collectionView.reloadData()
            })

        } else if let error = error {
            // Handle error that occurred while opening or downloading the contents of the Realm
            debugPrint("error: \(error.localizedDescription)")
        }
    }

}

deinit {
    self.token?.stop()
}

最后我用来发送消息的sendMessage()方法：

func sendMessage(id: String, name: String, text: String) {

    let message = Message()
    message.userId = id
    message.name = name
    message.text = text
    message.dateCreated = NSDate()

    Realm.asyncOpen(configuration: self.configuration) { realm, error in
        if let realm = realm {
            // Realm successfully opened, with all remote data available
            try! realm.write() {
                realm.add(message)
            }
        } else if let error = error {
            // Handle error that occurred while opening or downloading the contents of the Realm
            debugPrint("error: \(error.localizedDescription)")
        }
    }

}

希望它有所帮助！再见！

Realm Sync快速的例子

1 个答案: