Hi @YJianMu could you show us what your Realm Object classes look like so we can help you further?

Hi @YJianMu could you show us what your Realm Object classes look like so we can help you further?

@objc
class XXRecordRLMObj: RLMObject {

@objc dynamic var id: String = ""

@objc dynamic var type: XXRecordType = ""

@objc dynamic var localId: String = ""

@objc dynamic var startedAt: Int = 0

@objc dynamic var endedAt: Int = 0

@objc dynamic var recordedAt: Int = 0

@objc dynamic var status: XXRecordStatus = ""

@objc dynamic var sysMetadata: XXRecordSysMetadataRLMObj?

@objc dynamic var recMetadata: XXRecordRecMetadataRLMObj?

override class func primaryKey() -> String? {
return "localId"
}
}

@objc
class XXRecordSysMetadataRLMObj: RLMEmbeddedObject {

@objc dynamic var brand: String = "iPhone"

@objc dynamic var endReason: XXRecordEndReasonName = ""

@objc dynamic var model: String = XXDevice.deviceModel()

@objc dynamic var osVersion: String = XXDevice.systemVersion()

@objc dynamic var sysEventList: RLMArray = RLMArray(objectClassName: XXRecordSysEventRLMObj.className())

@objc dynamic var sysStatusList: RLMArray = RLMArray(objectClassName: XXRecordSysStatusRLMObj.className())
}

@objc
class XXRecordSysEventRLMObj: RLMEmbeddedObject {

@objc dynamic var eventName: XXRecordSysEventName = XXRecordSysEventNameForeground

@objc dynamic var eventParam: String?

@objc dynamic var recordAt: Int64 = 0
}

@objc
class XXRecordSysStatusRLMObj: RLMEmbeddedObject {

@objc dynamic var batteryCapacity: Double = 0

@objc dynamic var isCharging: Bool = false

@objc dynamic var isLowMem: Bool = false

@objc dynamic var recordAt: Int64 = 0
}

//Crashes when accessing the XXRecordRLMObj.sysMetadata.sysEventList element

@jsflax Is there any news? I'm having the same thing