Question

因此，我正在尝试处理向服务器发布内容，这可以在iPhone上网时使用。现在我需要处理请求，如果没有互联网。我尝试了一些代码来处理与可达性相关的操作队列。我不认为我需要缓存，因为我发帖。我在这里错过了什么？我希望在互联网可用时尽快发送请求。虽然我可能在应用程序中做了其他事情。我唯一怀疑的是我的OperationManager在每个请求中初始化，如POST或GET，所以也许前一个可能是wipeout。但那是操作管理器而不是操作队列。

- (void)sendRequestPOST:(NSString *)url parameters:(NSMutableDictionary *)parameters {
NSLog(@"POST Request URL : %@", url);
NSLog(@"POST Request Body : %@", parameters);
__block AFHTTPRequestOperation *opr;
[[AFNetworkActivityIndicatorManager sharedManager] setEnabled:YES];

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
AFJSONRequestSerializer *jsonRS = [[AFJSONRequestSerializer alloc] init];
[manager setRequestSerializer:jsonRS];
[[manager requestSerializer] setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[[manager requestSerializer] setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[[manager responseSerializer] setAcceptableContentTypes:[NSSet setWithObjects:@"application/json", @"text/html", nil]];

[[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
    NSLog(@"Reachability: %@", AFStringFromNetworkReachabilityStatus(status));
}];
NSOperationQueue *operationQueue = manager.operationQueue;
[manager.reachabilityManager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
    switch (status) {
        case AFNetworkReachabilityStatusReachableViaWWAN:
        case AFNetworkReachabilityStatusReachableViaWiFi:
            [operationQueue setSuspended:NO];
            break;
        case AFNetworkReachabilityStatusNotReachable:
        default:
            [operationQueue setSuspended:YES];
            break;
    }
}];

[manager.reachabilityManager startMonitoring];


[manager POST:url parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
    [MBProgressHUD hideHUDForView:self.mainView animated:YES];
    opr = operation;
    [self.mainView setUserInteractionEnabled:YES];
    NSLog(@"POST Response : %@",responseObject);
    NSLog(@"Status Code : %ld",(long)[[operation response] statusCode]);
    if([_delegate respondsToSelector:@selector(didFinish:dictInfo:)]) {
        [AFNetworkActivityIndicatorManager sharedManager].enabled = NO;
        [_delegate didFinish:self dictInfo:(NSMutableDictionary *)responseObject];
         NSLog(@"Request finished");
    }
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    opr = operation;
    [MBProgressHUD hideHUDForView:self.mainView animated:YES];
    [self.mainView setUserInteractionEnabled:YES];
    NSLog(@"POST Error: %@", error);

    //    [[AFHTTPRequestOperationManager manager].operatonQueue addOperation:operation];

    if([_delegate respondsToSelector:@selector(failRequest:statusCode:)]) {
        [AFNetworkActivityIndicatorManager sharedManager].enabled = NO;
        [_delegate failRequest:self statusCode:[[operation response] statusCode]];
        NSLog(@"Request failed");
    }
}];}

Answer 1

我编写了一个Swift pod，它允许网络请求以一种无论当前网络连接如何排队的方式进行封装，并保存到它之前保存 - https://cocoapods.org/pods/OfflineRequestManager。对于任何看到这个的人都可能有用。

最简单的用例看起来如下所示，尽管大多数实际情况（保存到磁盘，特定请求数据等）都会有更多的环节要跳过：

import OfflineRequestManager

class SimpleRequest: OfflineRequest {
    func perform(completion: @escaping (Error?) -> Void) {
        doMyNetworkRequest(withCompletion: { response, error in
            handleResponse(response)
            completion(error)
        })
    }
}
///////
OfflineRequestManager.defaultManager(queueRequest: SimpleRequest())

AFNetworking在离线时发出请求

1 个答案: