Download and parse xml ios

For the sake of the simplicity, we just log the description of the error, if any occurs of course. For now, it would be nice if we could see the fetched data even on the console, therefore complete the above method as shown right next:.

That was a very important job, but we have more to do. There are two subviews for showing data: A label for the country title along with its two-letter code, and a table view for the rest of it.

Actually, we will show only the following besides the country name :. While being in the getCountryInfo method and in the else case, add the next line to display the country name to the label existing right below the textfield:. In the same else case, add the next two lines as well, in order to reload the data in the table view and make it appear initially the table view is hidden :. After the above couple of modifications, your else case in the completion handler block should look like this:.

We want 7 rows to exist in our table view. Our work here is quite easy. Pay special attention to the last case, where we add the cell that will take us to the neighbour countries list. For this cell only, we set the disclosure indicator as the accessory type and the default selection style.

Now you can run the app and see it functioning properly for the first time. Always remember that these details are fetched in real time from a web server as JSON data, and our app is the one that makes it possible to view that data! In the previous sections we managed to implement the first case and make our app work great. Now, we will see how to produce JSON data. If you look closely in the view controller when running the app, there is a Compose bar button item at the right side of the navigation bar:.

The above does all the magical work. Of course, this is not readable by humans, so how can we show and send the actual JSON string?

This is safe to do, as we already know that a JSON value is a string value. One basic thing you should always have in mind when using the MFMailComposeViewController class for displaying the e-mail view controller, is that you should check if the device can actually send e-mails.

The IBAction method is now ready. Go and test the app once again. So, first of all, we must make the ViewController class send the geonameId value to the NeighboursViewController , and then proceed to the rest of the work. Open the NeighboursViewController. Now, back to the ViewController. Add the next code segment:. Having this property set, we are able to proceed to our work. Go to the NeighboursViewController. We want the neighbour countries data to be downloaded when the view controller gets loaded, so go to the viewDidLoad method and call it:.

You can then go to a statistics screen to see the average download and parse times for each method. I thought this would be an ideal way to test out how these various APIs performed against each other, so I extended the sample to include all of the above libraries.

You can download the updated project below if you want to try it out on your device. It also serves as a nice example of how to use each of the above APIs!

A note on the project: if the library included XPath support, I used it for a single lookup, because I felt it represented the way the library would be used in practice. But of course XPath is generally slower than manually walking through the tree, so it adds to the benchmarks for those libraries. TBXML was the fastest, which makes sense because many features were taken out in order to optimize parse time for reading only.

Go to the Storyboard and select the Table View Controller. Give the fille a filename of Books. Open the Books. Go to the TableViewController. Add the following TableViewController delegate methods. The title and author of the books will be displayed into the Table View with the contents of the books array. Ray is part of a great team - the raywenderlich. Special thanks to Saliom for suggesting writing this XML tutorial!

Download the gdata-objective-c client library. Then replace Player. Replace PartyParser. Modify your dataFilePath method in PartyParser. Next declare your new method in PartyParser. It will look something like this: Go ahead and find that folder with Finder and open up the XML, and if all goes well you should see your new party member in the XML: Then run the app again, open up your console log, and see if you can find where Waldo is! So any plans to use XML reading and writing in your apps?

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