sdk - image transfer between iPhone application and server -

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There are several types of parsing methods like

NSXML, JSON etc etc. I am confused with so many ways. So please help me to choose from them. Which best parse has to be followed, then taken from images and an iPhone application ??

ASIHTTPRequest to act on asynchronous request
To parse JSON objects sent in JSON framework native data objects (NSDictionaries and NSArrays)
UIImage * myDownloadedImage = [UIImage imageWithData: .. [RequestObject feedback data]]; to turn downloaded image data into a UIImage.

Here is a sample code for one of my recent projects. I inserted ASIHTTPRequest.h and JSON.h 

  NSString * projurl = [NSString stringWithFormat: @ "% @ Mobile / Project_details /? Project =% @ ", WEBAPPURL, self.projectId]; __blick ASIHTPPReveve * R = [with ASHTPPRAC request request: [NSL URL URL AuthorString: Progerlal]]; [Set setpleplelock: ^ {self.projectData = [[R response string] JSONValue]; [Self.tableViewReloadData]; }]; [RSynSynchronous];   
 You can walk right into the entire block, take out the URL attached to this project, request them, handle the reaction inside the nested block within one before another completion ... Beauty is to deal with the new block oriented results of the Indian Archaeological Survey that it can all be in one place, and you do not need to sweat the details of a formal representative pattern.  
 You can put a "Loading" UI above, make asynchronous calls before starting the element, and block it to complete, if you wish, lock it.

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