Ios 使用NSURLSessionDataTask链接请求
我将使用NSURLSessionDataTask执行一系列请求。当第一个请求完成时,我需要使用第一个请求中的responseData来执行另一个多个请求。最后,我得到了NSArray并给出了表视图。怎么做?正如你在下面看到的,它不起作用Ios 使用NSURLSessionDataTask链接请求,ios,objective-c,nsurlsession,Ios,Objective C,Nsurlsession,我将使用NSURLSessionDataTask执行一系列请求。当第一个请求完成时,我需要使用第一个请求中的responseData来执行另一个多个请求。最后,我得到了NSArray并给出了表视图。怎么做?正如你在下面看到的,它不起作用 NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration]; AFURLSessionManager *manager = [[AFURL
NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:config];
NSString *tvdbId = [[NSUserDefaults standardUserDefaults] objectForKey:@"tvdbId"];
NSURL *urlString = [NSURL URLWithString:[NSString stringWithFormat:@"http://api.trakt.tv/show/seasons.json/%@/%@", kApiKey, tvdbId]];
__weak EpisodeViewController *weakSelf = self;
NSURLSessionDataTask *task = [manager dataTaskWithRequest:[NSURLRequest requestWithURL:urlString] completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
if (!error) {
NSArray *seasons = (NSArray *)responseObject;
__block NSMutableArray *seasonArray = [NSMutableArray new];
[seasons enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
NSString *seasonNumber = obj[@"season"];
NSURL *urlString = [NSURL URLWithString:[NSString stringWithFormat:@"http://api.trakt.tv/show/season.json/%@/%@/%@", kApiKey, tvdbId, seasonNumber]];
NSURLSessionDataTask *eposideTask = [manager dataTaskWithRequest:[NSURLRequest requestWithURL:urlString] completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
NSArray *eposides = (NSArray *)responseObject;
NSDictionary *dict = @{@"season": seasonNumber, @"eposodes": eposides};
[seasonArray addObject:dict];
}];
[eposideTask resume];
}];
weakSelf.eposides = [NSArray arrayWithArray:seasonArray];
NSLog(@"%@", weakSelf.eposides);
}
}];
[task resume];
如果正在下载数据,则可以使用
将您的操作(在本例中为NSURLSessionDataTask)添加到NSOperationQueue中,然后
将maximumconcurrentoperationCount设置为1
从每个操作的完成回调中获取下载的数据(操作结果)
示例代码
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *path = [[paths objectAtIndex:0] stringByAppendingPathComponent:[NSString stringWithFormat:@"temp.zip"]];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:TempUrl]];
operation = [[AFDownloadRequestOperation alloc] initWithRequest:request targetPath:path shouldResume:YES];
operation.outputStream = [NSOutputStream outputStreamToFileAtPath:path append:NO];
[operation setProgressiveDownloadProgressBlock:^(AFDownloadRequestOperation *operation, NSInteger bytesRead, long long totalBytesRead, long long totalBytesExpected, long long totalBytesReadForFile, long long totalBytesExpectedToReadForFile) {
/// Check Download Progress
}
}];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
//// Success code goes here
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"Error: %@", error);
}];
[[self downloadQueue] addOperation:operation];
你能给我举个例子吗?@yong ho查看我的更新答案如何使用NSURLSERSESSION任务?这是一个下载操作,不是我想要的;问题不是关于它的勇浩检查我的更新答案