我正在Swift中开发。我想通过nsuserdefaults
存储自定义数据。如何通过nsuserdefaults在swift中存储自定义数据?
我的自定义数据就像下面
在ConnectedDevice.swift
import UIKit
import Foundation
class ConnectedDevice {
var name:String?
var ConnectState:Bool=false
var AlertState:Int=0
var Battery:NSInteger=0
var AlertStatus:Int!
}
在ViewController.swift
var userDefault = NSUserDefaults.standardUserDefaults()
var ConnDevice:[ConnectedDevice] = [ConnectedDevice]()
当我尝试来存储数据,我使用以下代码:
userDefault.setValue(ConnDevice, forKey: "ConnectedDevice")
userDefault.synchronize()
当我尝试加载数据,我用下面的代码:
var test = userDefault.objectForKey("ConnectedDevice")
if((test) != nil){
ConnDevice = test as! [ConnectedDevice]
}
但它显示的错误日志像下面当我尝试通过nsuserdefaults
来存储数据。看来数据类型是无效的。
2016-08-24 17:17:50.315 Anti-Lost[471:212884] Attempt to set a non-property-list object (
"Anti_Lost.ConnectedDevice"
) as an NSUserDefaults/CFPreferences value for key ConnectedDevice
2016-08-24 17:17:50.318 Anti-Lost[471:212884] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Attempt to insert non-property list object (
"Anti_Lost.ConnectedDevice"
) for key ConnectedDevice'
我错过了什么吗? 如何在swift中通过nsuserdefaults
存储自定义数据? ----------------------------------编辑------------- --------------------
我修改代码如下所示:
在ConnectedDevice.swift
import UIKit
import Foundation
import CoreBluetooth
import CoreLocation
class ConnectedDevice : NSObject , NSCoding{
var RSSI_threshold:NSNumber=0
var Current_RSSI:NSNumber=0
var name:String?
var bdAddr:NSUUID?
var ConnectState:Bool=false
var AlertState:Int=0
var BLEPeripheral : CBPeripheral!
var DisconnectAddress:[String] = [String]()
var DisconnectTime:[String] = [String]()
var Battery:NSInteger=0
var Location:[CLLocation] = [CLLocation]()
var AlertStatus:Int!
func encodeWithCoder(aCoder: NSCoder) {
aCoder.encodeObject(RSSI_threshold, forKey: "RSSI_threshold")
aCoder.encodeObject(Current_RSSI, forKey: "Current_RSSI")
aCoder.encodeObject(name, forKey: "name")
aCoder.encodeObject(bdAddr, forKey: "bdAddr")
aCoder.encodeBool(ConnectState, forKey: "ConnectState")
aCoder.encodeInteger(AlertState, forKey: "AlertState")
aCoder.encodeObject(BLEPeripheral, forKey: "BLEPeripheral")
aCoder.encodeObject(DisconnectAddress, forKey: "DisconnectAddress")
aCoder.encodeObject(DisconnectTime, forKey: "DisconnectTime")
aCoder.encodeObject(Battery, forKey: "Battery")
aCoder.encodeObject(Location, forKey: "Location")
aCoder.encodeObject(AlertStatus, forKey: "AlertStatus")
}
override init() {
}
required init?(coder aDecoder: NSCoder) {
self.RSSI_threshold = aDecoder.decodeObjectForKey("RSSI_threshold") as! NSNumber
self.Current_RSSI = aDecoder.decodeObjectForKey("Current_RSSI") as! NSNumber
self.name = aDecoder.decodeObjectForKey("name") as? String
self.bdAddr = aDecoder.decodeObjectForKey("bdAddr") as? NSUUID
self.ConnectState = aDecoder.decodeObjectForKey("ConnectState") as! Bool
self.AlertState = aDecoder.decodeObjectForKey("AlertState") as! Int
self.BLEPeripheral = aDecoder.decodeObjectForKey("BLEPeripheral") as! CBPeripheral
self.DisconnectAddress = aDecoder.decodeObjectForKey("DisconnectAddress") as! [String]
self.DisconnectTime = aDecoder.decodeObjectForKey("DisconnectTime") as! [String]
self.Battery = aDecoder.decodeObjectForKey("Battery") as! NSInteger
self.Location = aDecoder.decodeObjectForKey("Location") as! [CLLocation]
self.AlertStatus = aDecoder.decodeObjectForKey("AlertStatus") as! Int
}
}
并且我使用以下代码来存储数据
let data = NSKeyedArchiver.archivedDataWithRootObject(ConnectedDevice)
NSUserDefaults.standardUserDefaults().setObject(data, forKey: "ConnectedDevice")
但它会显示错误的aCoder.encodeObject(BLEPeripheral, forKey: "BLEPeripheral")
,错误日志
2016-08-24 18:37:57.022 Anti-Lost[476:222607] -[CBPeripheral encodeWithCoder:]: unrecognized selector sent to instance 0x14e9fc60
2016-08-24 18:37:57.024 Anti-Lost[476:222607] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[CBPeripheral encodeWithCoder:]: unrecognized selector sent to instance 0x14e9fc60'
如何编码CBPeripheral
?
你需要让'ConnectedDevice'符合'NSCoding'并使用'NSKeyedArchiver'。 – Larme
可能重复的[如何在NSUserDefaults中存储自定义对象](http://stackoverflow.com/questions/2315948/how-to-store-custom-objects-in-nsuserdefaults) –