Question

首先，我很抱歉任何拼写或语法错误，因为英语不是我的第一语言。

我正在尝试使用AFNetworking 2.0.2来接收JSON响应，其中包含一个Base64编码的sqlite数据库。问题是在下载过程中不会更新进度视图。一旦完全下载响应，就会立即多次调用下载进度块！

这是我正在使用的代码：

NSURL *url = [NSURL URLWithString:[[Config sharedInstance] databaseDownloadPath]
                    relativeToURL:[NSURL URLWithString:[[Config sharedInstance] baseServerAdress]]];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setTimeoutInterval:600];

AFHTTPRequestSerializer * serializer = [AFHTTPRequestSerializer serializer];
[serializer setValue:[[Config sharedInstance] currentCompany]      forHTTPHeaderField:@"CurrentCompany"];
[serializer setValue:[[Config sharedInstance] currentUser]         forHTTPHeaderField:@"CurrentUser"];
[serializer setValue:[[Config sharedInstance] authorizationToken]  forHTTPHeaderField:@"AuthorizationToken"];
[serializer setValue:[[Config sharedInstance] accessGroup]         forHTTPHeaderField:@"AccessGroup"];
[serializer setValue:[[Config sharedInstance] applicationId]       forHTTPHeaderField:@"Application"];

NSURLRequest * serializedRequest = [serializer requestBySerializingRequest:request
                                                             withParameters:@{
                                                                              @"storeId":[[Config sharedInstance] storeId],
                                                                              @"compress":@"true"
                                                                              }
                                                                      error:nil];

operation = [[AFHTTPRequestOperation alloc] initWithRequest:serializedRequest];

operation.responseSerializer = [AFJSONResponseSerializer serializer];

[[AFNetworkActivityIndicatorManager sharedManager] incrementActivityCount];

[operation setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead) {

    float percent = ((float)totalBytesRead / (float)totalBytesExpectedToRead)*100;

    dispatch_async(dispatch_get_main_queue(), ^{
        NSlog(@"%f",round(percent));
    });

}];

[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *_operation, id responseObject) {
    [[AFNetworkActivityIndicatorManager sharedManager] decrementActivityCount];

    NSLog(@"%@",[[_operation response] allHeaderFields]);

} failure:^(AFHTTPRequestOperation *_operation, NSError *error) {
    [[AFNetworkActivityIndicatorManager sharedManager] decrementActivityCount];

    NSLog(@"ERR: %@", [error description]);
}];

[operation start];

操作开始后，一分钟或两分钟都没有发生任何事情，而收到响应，然后，突然，我在调用成功块之前立即获得了几十个日志。

我还尝试使用以下代码而不是手动设置下载进度块，但得到了相同的结果：

[progressView setProgressWithDownloadProgressOfOperation:operation animated:YES];

我已经检查过并且响应中的Content-Length标头是正确的，所以这不是标题错误。

有没有人遇到过这种情况？

AFNetworking不使用JSON和Base64编码文件更新progressview

0 个答案: