Ios download contents of url

More on developer. This does exactly what I want. If you want to download image and save it locally, this worth a try. If you set theData to nil , what do you expect it to write to the disk?

Alfonso Alfonso 8, 42 42 silver badges 63 63 bronze badges. The NSURLConnection portion is just left hanging, doing nothing - but it will still pull data from the network, discarding it afterwards. How can I add multiple images parsed from web service? According to apples release notes it means the following: Small data values like image thumbnails may be efficiently stored in a database, but laarge photos or other media are best handled directly by the file system.

Alexander Alexander 7, 8 8 gold badges 43 43 silver badges 74 74 bronze badges. You are writing NULL data to your file as well. Please check your code once again. Joseph at SwiftOtter 4, 5 5 gold badges 36 36 silver badges 55 55 bronze badges. Jim Jim 4, 5 5 gold badges 26 26 silver badges 30 30 bronze badges.

Note that sending a selector to nil does not have any effect, so actually nothing is written to disk not even null data. Does not really matter in this case, but just to point out the subtle difference. Rahul Mane 18 18 silver badges 33 33 bronze badges.

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Building intelligent escalation chains for modern SRE. Featured on Meta. Now live: A fully responsive profile. Reducing the weight of our footer. Linked See more linked questions. Related 0. Hot Network Questions. Question feed. If you do, make sure your body data is properly formatted for that content type.

The way you do this depends on the class you use and on the version of OS X or iOS that you are targeting. In this method, you perform whatever operations are needed to determine how to respond to the challenge, then call the provided completion handler with a constant that indicates how the URL Loading System should proceed and, optionally, a credential to use for authentication purposes. In earlier versions, your delegate should implement both the connection:canAuthenticateAgainstProtectionSpace: and connection:didReceiveAuthenticationChallenge: methods.

Regardless of which class you use, your authentication handler method must examine the authentication challenge and tell the URL Loading System how to proceed:. For information about creating a credential object, read Creating a Credential Object. If you request default handling, then the operating system sends any appropriate credentials that exist in the credentials cache. The sample as a whole is designed to build and run on iOS, but the networking portions of the code are also useful on OS X.

Other than the syntax details, the request functionality in Core Foundation is closely related to what is available at the Foundation layer. You can, of course, use it in Objective-C code.

These APIs are the most flexible way to communicate with an HTTP server short of using sockets or socket streams directly , providing complete control over the message body as sent to the remote server, and control over most of the message headers as well. These APIs are also more complex, and thus should be used only if higher-level APIs cannot support your needs—for example, if you need to override the default system proxies.

If you are incorporating client-side web services communication in your OS X program, you can take advantage of a number of technologies:. All Rights Reserved. Terms of Use Privacy Policy Updated: To submit a product bug or enhancement request, please visit the Bug Reporter page. Documentation Archive Developer Search. Next Previous. Sending feedback…. Please try submitting your feedback later. Thank you for providing feedback!

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