SDWebImage实现之网络下载NSURLConnection NSURLSession

NSURLConnection 下载

NSURL *URL = [NSURL URLWithString:@"http://www.apple.com"];

NSURLRequest *request = [NSURLRequest requestWithURL:URL];

[NSURLConnection sendAsynchronousRequest:request

queue:[NSOperationQueue mainQueue]

completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {

// ...

}];

NSURLSession 下载

NSURL *URL = [NSURL URLWithString:@"http://www.apple.com"];

NSURLRequest *request = [NSURLRequest requestWithURL:URL];

NSURLSession *session = [NSURLSession sharedSession];

NSURLSessionDataTask *task = [session dataTaskWithRequest:request

completionHandler:

^(NSData *data, NSURLResponse *response, NSError *error) {

// ...

}];

[task resume];