JSON overview and demo
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The document discusses parsing JSON data and provides an example of JSON code representing book metadata. It then shows how to extract specific data elements like the book ISBN from the JSON using Objective-C code. Finally, it suggests there may be a better way and encourages learning something new.
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JSON overview and demo
- 1. Parsing JSON A proof of concept tool for devs Troy Barrett Zachary Drossman
- 2. Who is J SON? Wrong question, son.
- 3. JSON: not the bring home for dinner type.
- 4. Interpreting JSON { items = ( { accessInfo = { accessViewStatus = NONE; country = US; embeddable = 0; epub = { isAvailable = 0; }; pdf = { isAvailable = 0;}; publicDomain = 0; quoteSharingAllowed = 0; textToSpeechPermission = ALLOWED; viewability = "NO_PAGES"; webReaderLink = "http://…; }; }; searchInfo = { textSnippet = "Harry Potter is an ordinary boy ….”; }; selfLink = "https:…”; volumeInfo = { authors = ("J. K. Rowling”); averageRating = "4.5"; canonicalVolumeLink = "http://…"; categories = ("Juvenile Fiction”); contentVersion = "preview-1.0.0"; description = "Harry …"; imageLinks = { smallThumbnail = "http://… "; thumbnail = "http://…"; }; industryIdentifiers = ({ identifier = 0747532699; type = "ISBN_10”; …
- 5. Interpreting JSON { items = ( { accessInfo = { accessViewStatus = NONE; country = US; embeddable = 0; epub = { isAvailable = 0; }; pdf = { isAvailable = 0;}; publicDomain = 0; quoteSharingAllowed = 0; textToSpeechPermission = ALLOWED; viewability = "NO_PAGES"; webReaderLink = "http://…; }; }; searchInfo = { textSnippet = "Harry Potter is an ordinary boy ….”; }; selfLink = "https:…"; volumeInfo = { authors = ("J. K. Rowling”); averageRating = "4.5"; canonicalVolumeLink = "http://…"; categories = ("Juvenile Fiction”); contentVersion = "preview-1.0.0"; description = "Harry …"; imageLinks = { smallThumbnail = "http://… "; thumbnail = "http://…"; }; industryIdentifiers = ({ identifier = 0747532699; type = "ISBN_10”; …
- 6. So if we wanted to use this data... • NSString *bookISBN_ID = [@“items”][#][@“volumeInfo”][@“industryIde ntifiers”][#][@“identifier”]
- 7. What if there was a better way?
- 8. Listen to our DEMO.
Editor's Notes
- Intro – My name is Zach / This is Troy, we’re students in the ios-002 class here at Flatiron. Today we’re going to tell you a bit about a proof of concept tool for developers that we are building. Our presentation is called “Parsing JSON” – so that begs the question – how many of you are familiar with JSON? Good, the majority, as I expected, given you are all developers. But for those of you who don’t know, a little introduction first.
- What is JSON? JSON is a common data format for information you will glean from internet sources. It works on the same principles as a basic outline, as you were taught in high school, except, instead of numbers and letters denoting the various levels of the hierarchy, all you get is opening and closing braces and brackets denoting the beginning and ending of each “level”.