Parsing JSON vs parsing XML in iOS

问题:

Scenario :

I am working on a parser for data which is sent back from a server after making a request. The format of data is either JSON or XML.

Question:

1. Are there any reasons to choose one of these formats over the other one?
2. Which one is faster, parsing json or parsing xml?

Thanks all.

回答1:

Checkout this tutorial about parsing XMLs. I might sound opinionated, but if there's a choice go for JSON, although I have no clue what situation your project is in. I would certainly look at the entire architecture (trade-offs and choices) of the project before making a decision. From my experience, understanding JSON and relating it to NSDictionaries and NSArrays is much easier than understanding XMLs.

回答2:

When JSON is preferred it is usually because it is significantly shorter. That saves transmission traffic and therefore time and battery power (not a bad thing, though?). Meaning: Even if parsing JSON would be slower (which I doubt), the gain during the tranfer over the air would certainly compensate any additional CPU time during parsing.

回答3:

THis is a useful post that might help you decide.