I must be making this harder than it is... or implementing the solutions I see online incorrectly.
I have an array of URLs which I would like to loop through and push the results to a dictionary in order or the array. How can I make it wait for the dictionary to be updated before running the next request? Basically I want to make the calls synchronously in a background thread.
Here is where I call the download:
for (NSString *path in paths) {
NSURLSession *session = [NSURLSession sessionWithConfiguration [NSURLSessionConfiguration defaultSessionConfiguration]];
NSURLRequest *request = [[NSURLRequest alloc] initWithURL:[NSURL URLWithString:path]
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:10];
NSURLSessionDataTask *task = [session dataTaskWithRequest:request
completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
if (error)
{
}
else
{
NSError *parsingError = nil;
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data
options:NSJSONReadingAllowFragments
error:&error];
if (parsingError)
{
}
else
{
[myDictionary addObject:dict];
}
}
}];
[task resume];
}