Universal XLM reader for rss news feeds

Discussion in 'iOS Programming' started by 1458279, Apr 5, 2016.

  1. 1458279 Suspended

    1458279

    Joined:
    May 1, 2010
    Location:
    California
    #1
    I've been digging into an RSS news feed reader. I'm running into a problem when I change from one feed to another.

    The tutorial:
    http://www.touch-code-magazine.com/tutorial-building-advanced-rss-reader-with-ios6/

    I wanted to do things like read different feeds and be able to add new ones as needed. I'm new to XML and it seems I'm having a problem with different data structures being returned.

    Is there a universal routine to read different news feeds or do you have to know the structure in advance?

    Is there a getStructureFromXML() function somewhere, so I can at least get an idea of the structure that's coming in?

    Or maybe a routine that will make an array and load it in whatever the structure is?


    BTW, theres a weak spot in the tutorial code:

    Code:
    NSString* itemDescription = [NSString stringWithFormat:@"%@...", [self.itemDescription substringToIndex:100]];
    Will crash if the string is < 100, this will fix it:

    Code:
       NSString* itemDescription = @"*Error* Description Too short...";
    
        if (self.itemDescription.length > 20)
    
        {
    
            itemDescription = [NSStringstringWithFormat:@"%@...", [self.itemDescriptionsubstringToIndex:MIN(100,self.itemDescription.length-1)]];
    
        }
    
     
  2. Dookieman macrumors 6502

    Joined:
    Oct 12, 2009
    #2
    In my limited experience with XML (I wrote a podcast app, podcasts feeds are just RSS Feeds), the submitters needed to conform to a structure. I'm not sure if it's the same in all cases but I assume there is an agreed upon way on setting up an RSS Feed so it can be easily read by multiple RSS programs. I would spit your XML you returned into the log and adjust your model to what is returned. I would be 9/10 times most feeds are similar.
     

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