【发布时间】:2016-08-24 11:24:42
【问题描述】:
我正在使用 Swift 进行开发。我想通过nsuserdefaults存储自定义数据。
我的自定义数据如下
在 ConnectedDevice.swift
中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
}
}
在 ViewController.swift
var userDefault = NSUserDefaults.standardUserDefaults()
var BLEConnectedDevice:[ConnectedDevice] = [ConnectedDevice]()
当我尝试存储数据时,我使用以下代码:
let data = NSKeyedArchiver.archivedDataWithRootObject(BLEConnectedDevice)
NSUserDefaults.standardUserDefaults().setObject(data, forKey: "BLEConnectedDevice")
userDefault.synchronize()
当我尝试加载数据时,我使用以下代码:
if let Data = NSUserDefaults.standardUserDefaults().objectForKey("BLEConnectedDevice") as? NSData {
if let devcie = NSKeyedUnarchiver.unarchiveObjectWithData(Data) as? ConnectedDevice {
print("NSUserDefaults = \(devcie.name)")
}
}
但是会在aCoder.encodeObject(BLEPeripheral, forKey: "BLEPeripheral")处显示错误,错误日志是
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'
如何对CBPeripheral 进行编码?
我错过了什么吗?
如何在swift中通过nsuserdefaults存储自定义数据?
【问题讨论】:
-
CBPeripheral不符合NSCoding。你不能保存它。您可能只想保存有关它的“有趣信息”,但不能这样存储。
标签: ios swift nsuserdefaults nscoding