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So in the last lesson, we manage to figure out how to use Alamofire to make a HTTP GET request and grab
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a whole bunch of information from Wikipedia.
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Now, in this lesson, we're going to pass that information and display it inside our app in a label, like
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so.
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So we've done this before in both Clima and FlashChat, so I want to set it as a challenge and see if
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you can turn this response into a JSON, and then parse that JSON in order to grab the relevant extract, and
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put it into a label.
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It might involve a little bit of design work as well.
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Here's a hint
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before you start working on the challenge. When we printed this response in the last lesson, the data
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type of that response is a DataResponse object.
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Now, that is not same as a JSON, and you want to be able to use something like Jason editor online to
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be able to visualize the JSON structure more easily.
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So in order to turn it into a JSON, remember, we need to use the SwiftyJSON framework. So we can write
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JSON,
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and then we can convert that response.result.value into a JSON value.
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So let me show you side by side the differences. If you have a look over here,
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this is our Data Response Object, and on the right is the same thing that's been converted into a JSON.
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You can see that in the JSON structure, all the keys are Strings, and they have quotation marks around
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them, whereas in the object, the keys are simply as they are.
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Now, if you tried to put this Data Response Object into the JSON editor straight away, you can see
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that it's going to give you a whole bunch of errors, and it won't be able to parse it because this is
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not JSON. But after you've converted it, then it will be able to parse it without any problems.
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And the idea is that you want to use this structure to guide your JSON parsing.
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So if you don't remember how we parsed JSON using SwiftyJSON, then have a look back at CLIMA or at
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FlashChat and remind yourself how he managed to chain keys together in order to get to the thing that
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we want which is, of course, this extract over here.
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So I'm going to set this as a challenge, give it a go, and see if you can do it.
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Don't worry if you can't, I'm going to walk you through the solution in the next lesson.