NSURLSessionUploadTask example in objective-c?

Question

Hi I'm using NSURLSessionDataTask in app to for background http call as follows,

 NSURLSessionDataTask *postDataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {

But, I've 2 server say https://demo.demosite.com and http://214.43.45.35/ when I tried dataTaskWithRequest:request it doesn't support both server.I read here that dataTaskWithRequest:request doesn't support in background?.

NSURLSessionUploadTask support in background when app is not running. Can anyone share NSURLSessionUploadTask callback example?

Answer 1

Below is the example:

 NSData* data = [Your_json_string dataUsingEncoding:NSUTF8StringEncoding];

    NSURLSession *session = [NSURLSession sharedSession];

    NSURL *url = [NSURL URLWithString:@"your_url"];

    NSMutableURLRequest *request =

    [[NSMutableURLRequest alloc] initWithURL:url];

    [request setHTTPMethod:@"POST"];

    NSURLSessionUploadTask *uploadTask = [session         uploadTaskWithRequest:request fromData:data completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
        //Perform operations on your response here
    }];

    //Don't forget this line ever
    [uploadTask resume];