IOS Sinch Calling when Application is offline using APN(Get previously initiated Client)

Question

我已经成功集成了 Sinch SDK，它在应用程序打开时运行良好，现在我可以在我的应用程序离线时处理调用。

使用下面的方法我可以看到推送对，我正在将这个推送对发送到服务器以传递推送。

- (void)call:(id<SINCall>)call shouldSendPushNotifications:(NSArray *) pushPairs {

}

在 Appdelegate.m didFinishLaunchingWithOptions () 方法中，我正在获取特定的负载。

 NSDictionary* remotePush = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
    NSLog(@"%@",remotePush);
    if (remotePush) {
        NSLog(@"Entery ****");
        // Extract the Sinch-specific payload from the Apple Remote Push Notification
        NSString* payload = [[remotePush valueForKey:@"aps"] valueForKey:@"SIN"];

    //    [[userInfo valueForKey:@"aps"] valueForKey:@"content-available"];
        NSLog(@"Payload :%@",payload);
        // Get previously initiated Sinch client
        id<SINClient> client = _client;
        NSLog(@"Client ID %@",[client userId]);
        id<SINNotificationResult> result = [client relayRemotePushNotificationPayload:payload];
        NSLog(@"Result :%@",result);
        if (result.isCall && result.callResult.isTimedOut) {
            // Present alert notifying about missed call
        } else if (!result.isValid) {
            // Handle error
        }
    }

这里是完整的推送通知数据:

{
        aps =     {
            SIN = "AgEBdeibxmJBSK2Y7Nh/fz50VMhVBVQMKzkxODg0NzE4MjQx";
            alert = "";
            "content-available" = 1;
            type = 2;
        };
    }

来到这段代码:

// Get previously initiated Sinch client
    id<SINClient> client = _client;
    NSLog(@"Client ID %@",[client userId]);

当我打印客户端 ID 时它是 Nil，我如何需要获得之前启动的 Sinch 客户端？由于应用程序关闭，客户端实例被释放。

Answer 1

您需要自己保留 userId，然后在应用重新启动时，使用您在上次应用关闭时保留的 userId 初始化一个 SinchClient。

最简单的可能是使用 NSUserDefaults 并保存您在用户登录时写入的字段“userId”，并在用户注销您的应用程序时将其删除。

例如开始时:

[[NSUserDefaults standardUserDefaults] setObject:userId forKey:@"userId"];

然后当您的应用程序通过 APN 启动时:

NSString *persistedUserId = [[NSUserDefaults standardUserDefaults] objectForKey:@"userId"];
if (persistedUserId != nil) {
  _client = [Sinch clientWithApplicationKey:APPLICATION_KEY
                          applicationSecret:APPLICATION_SECRET
                            environmentHost:ENVIRONMENT
                                     userId:persistedUserId];
}