ios - 无法将 Realm 与 iCloud 同步

Question

我正在尝试将我的应用程序中的 Realm 与 iCloud/CloudKit 同步，但没有成功...

这是我的源代码:

-(void)sync
{
    NSURL *baseURL = [[NSFileManager defaultManager] URLForUbiquityContainerIdentifier:nil];

    if (baseURL) //iCloud is active
    {
        NSURL *serverURL = [NSURL URLWithString:@"http://myMacBookNwtworkIP:9080"]; //Realm Object Server is up and running at this URL
        RLMSyncCredential *usernameCredential = [RLMSyncCredential credentialWithUsername:@"myUsername"
                                                                                 password:@"myPassword"
                                                                                  actions:RLMAuthenticationActionsUseExistingAccount];
        RLMSyncCredential *iCloudCredential = [RLMSyncCredential credentialWithICloudToken:@"myiCloudToken"];

        [RLMSyncUser authenticateWithCredential:usernameCredential
                                  authServerURL:serverURL
                                   onCompletion:^(RLMSyncUser *user, NSError *error) {
                                       if (user) { //user recognized in my real object server
                                           // can now open a synchronized RLMRealm with this user
                                           RLMRealmConfiguration *config = [RLMRealmConfiguration defaultConfiguration];
        /* CRASH AT THIS LINE! */          config.syncConfiguration = [[RLMSyncConfiguration alloc] initWithUser:user realmURL:serverURL];
                                           RLMRealm *realm = [RLMRealm realmWithConfiguration:config error:nil];// Any changes made to this Realm will be synced across all devices!
                                       } else if (error) {
                                           // handle error
                                           NSLog(@"error %@",error);
                                       }
                                   }];
    }
}

当我尝试执行时

config.syncConfiguration = [[RLMSyncConfiguration alloc] initWithUser:user realmURL:serverURL];

我收到这个错误

The provided URL (http://myMacBookNwtworkIP:9080) was not a valid Realm URL.

我该如何解决？

此外，由于这是我第一次尝试在 iCloud 中保存内容，我应该如何使用 iCloudCredential？事实上，如果我用它替换 usernameCredential，那么 user 总是 nil...

我按照这些链接中的步骤操作:

1. https://realm.io/docs/objc/latest/#the-realm-mobile-platform
2. https://realm.io/docs/realm-object-server/#authentication

Answer 1

为防止崩溃，有必要指定“realm”协议(protocol)而不是“http”，如下所示

config.syncConfiguration = [[RLMSyncConfiguration alloc] initWithUser:user realmURL:[NSURL URLWithString:@"realm://myMacBookNwtworkIP:9080"]];

感谢this link