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I'm planning to use TBXML for my Weather app. I've used NSXMLParser with a NSURLConnection up to now, but i feel this must be able much simpler, faster and more stable (the current code is so complex minor issues keep slipping in that are hell to debug).

I've been searching for asynchronous parsers for a bit and ended up in an article ('How to choose the best xml parser for your iPhone project' on raywenderlich) which lead me to TBXML. Reading through the documentation, i saw that you can also init it with an URL, which would take away the need for using the NSURLConnection. My first question is this: What are the advantages of using NSURLRequest over this? I am going to check if the network connection is alright first before i start TBXML, so that won't be a problem.

My second question is about the asynchronousity: If i simply call initWithURL or initWithData, will its processing be asynchronous? From what i've seen, it has no delegate calls but instead you just directly get the elements from the TBXML object. If i try getting elements from it before it's done, will it simply hang there? Since this can last especially long if you use initWithURL (which would pretty much answer my first question) If so, is TBXML safe to run on another thread (which i assume it is)?

Alex Nolasco
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Erik S
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If you want to parse it asynchronously you really need a secondary thread, sockets and things like that can work on the runloop because they only have to check every once in a while whether there is data available to read. A parser really needs to use some processing powah..

Just use grand central dispatch, parse your data and use it. I can't tell you whether its threading safe but if it does not say its unsafe then its most likely safe anyways..

Antwan van Houdt
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  • The problem won't be in doing it on another thread, i'm doing things like that all the time. My main issue is if it's safe to run on another thread, since e.g. NSURLConnection does not seem to be, or if it's asynchronous by itself. – Erik S Nov 15 '11 at 11:06
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    @ErikDolor NSURLConnection should be asychronous by itself, just like NSURLDownload although NSURLDownload is not available on iOS – Antwan van Houdt Nov 15 '11 at 11:11
  • Nevermind, it was the CLLocationManager that was my problem, now i remember. But shouldn't it report delegate events on the thread it was created on? – Erik S Nov 15 '11 at 11:32
  • @ErikDolor yeah thats right, but you should be able to bridge that – Antwan van Houdt Nov 15 '11 at 12:53
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http://www.tbxml.co.uk/TBXML/TBXML_Free.html

follow the link and get your answer.

Emon
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