我可以在哪里存储 iOS 设备令牌供以后使用？

Question

现在我正在通过 didRegisterForRemoteNotificationsWithDeviceToken 获取设备令牌。但是，我稍后需要在我的用户登录后在我的应用程序中使用设备令牌。

我以后如何从应用程序的其他地方访问 deviceToken，如果我不能，how/where 我可以将它存储在 didRegisterForRemoteNotificationsWithDeviceToken 中以便以后检索它吗？

Answer 1

最简单的方法就是使用NSUserDefaults

节省：

NSUserDefaults * ud = [NSUserDefaults standardUserDefaults];
[ud setObject:myPushToken forKey:@"currentPushToken"];
[ud synchronize];

正在恢复：

NSString * currentPushToken = [[NSUserDefaults standardUserDefaults] objectForKey:@"currentPushToken"];

Answer 2

这样的数据最好用keychain。

将这个 class 函数添加到您的项目中

import UIKit
import Security
class Keychain {

  class func save(key: String, data: NSData) -> Bool {
    let query = [
        kSecClass as String       : kSecClassGenericPassword as String,
        kSecAttrAccount as String : key,
        kSecValueData as String   : data ]

    SecItemDelete(query as CFDictionaryRef)

    let status: OSStatus = SecItemAdd(query as CFDictionaryRef, nil)

    return status == noErr
  }

  class func load(key: String) -> NSData? {
    let query = [
        kSecClass as String       : kSecClassGenericPassword,
        kSecAttrAccount as String : key,
        kSecReturnData as String  : kCFBooleanTrue,
        kSecMatchLimit as String  : kSecMatchLimitOne ]

    var dataTypeRef :Unmanaged<AnyObject>?

    let status: OSStatus = SecItemCopyMatching(query, &dataTypeRef)

    if status == noErr {
        return (dataTypeRef!.takeRetainedValue() as NSData)
    } else {
        return nil
    }
  }

  class func delete(key: String) -> Bool {
    let query = [
        kSecClass as String       : kSecClassGenericPassword,
        kSecAttrAccount as String : key ]

    let status: OSStatus = SecItemDelete(query as CFDictionaryRef)
    return status == noErr
  }

  class func clear() -> Bool {
    let query = [ kSecClass as String : kSecClassGenericPassword ]
    let status: OSStatus = SecItemDelete(query as CFDictionaryRef)   
    return status == noErr
  }
}

然后你这样使用它

存储（pass是你的字符串，token）

if let data = pass.dataUsingEncoding(NSUTF8StringEncoding,allowLossyConversion: false)  {
  let saveSuccess = Keychain.save("Password", data: data)
}

加载

data = Keychain.load("Password") 
var pass =NSString(data: data, encoding: UInt())

我可以在哪里存储 iOS 设备令牌供以后使用？

Where can I store the iOS device token for later use?

ios

cocoa-touch

apple-push-notifications