CODEWITHSUNDEEP
iosobjective-cuiviewcontrollernsurlsessionnsurlsessiondownloadtask
Sourabh Mahna
Sourabh Mahna

Reputation: 52

How to Continue data download in other ViewControllers

There are several files to download in a particular viewController. When a user taps on download of a particular file, a progressView appears to show the amount of data downloaded. Also at a particular time multiple files can be downloaded. Since the file is quite large, it takes a few minutes to complete the download. The problem is that when I go to another ViewController, all the downloads stop and i have to stay on the download ViewController and wait for the download to complete. I am using NSURLSession to download data. Is there a way to get the download going even when the download ViewController is dismissed?

One option is i will transfer the code to appDelegate. Is there any other convenient way to do this task.

Upvotes: 0

Views: 217

Answers (1)

Mohamed Mostafa
Mohamed Mostafa

Reputation: 1057

Try to have a look on AFNetworking https://github.com/AFNetworking/AFNetworking

You can define this part in Appdelegate but be sure to make them visible ( Properties )

    NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
    AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];

Then in any view get them and start the download task

NSURL *URL = [NSURL URLWithString:@"http://example.com/download.zip"];

NSURLRequest *request = [NSURLRequest requestWithURL:URL];

NSURLSessionDownloadTask *downloadTask = [manager downloadTaskWithRequest:request progress:nil destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {
    NSURL *documentsDirectoryURL = [[NSFileManager defaultManager] URLForDirectory:NSDocumentDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:NO error:nil];
    return [documentsDirectoryURL URLByAppendingPathComponent:[response suggestedFilename]];
} completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {
    NSLog(@"File downloaded to: %@", filePath);
}];
[downloadTask resume];
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"Error: %@", error);
    }];

Upvotes: 1

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