RMLException: Attempting to modify object outside of a write transaction – call beginWriteTransaction on an RLMRealm instance first

抛出.

有人知道吗？

import RealmSwift

func createOrUpdateMachineInRealm(machine: Machine){

    let priority = DISPATCH_QUEUE_PRIORITY_DEFAULT

    dispatch_async(dispatch_get_global_queue(priority,0)) {
        // do some task
        let realm = Realm()

        realm.beginWrite()

        realm.write{
            realm.add(machine,update: true)
        }

        realm.commitWrite()

        dispatch_async(dispatch_get_main_queue()) {
            // update some UI
            actionDelegate?.operationCompleted(true)
        }

    }
}

解决方案：我也传入了机器的参数并将它们分配给realm.write()中的机器

func createOrUpdateMachineInRealm(machine: Machine,name: String){

    let priority = DISPATCH_QUEUE_PRIORITY_DEFAULT

    dispatch_async(dispatch_get_global_queue(priority,0)) {
        // do some task
        let realm = Realm()

        realm.write{
            machine.name = name
            realm.add(machine,update: true)
        }
     }

 }