Download E-books iOS Apps with REST APIs PDF

By Christina Moulton

Making your first fast app that makes use of an internet carrier might be overwhelming. it sort of feels like all time you are attempting to determine it out you simply upload extra issues to profit for your checklist: leisure, Alamofire, parsing JSON, OAuth, App shipping defense, environment headers, … however it doesn’t need to be complicated.

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Shop and run to check it out earlier than relocating directly to making a element view within the subsequent bankruptcy. in the event you bought uninterested in typing, here’s the code: (tagged “lists”). 14. Switching among View Controllers and extra JSON Parsing we now have a speedy app that: Pulls gist facts from the GitHub Gists API utilizing Alamofireand OAuth 2. zero authentication makes use of customized reaction serializers to strategy the JSON into an array of Gist gadgets Parses a few string fields within the net provider JSON screens the consequences in a desk view, together with loading pictures from URLs within the desk view cells shall we the person choose between three diverse lists with three varied API calls a lot extra effects because the person scrolls down within the desk view permits clients to drag to refresh the information during this bankruptcy we’ll retain progressing in this app so as to add extra of the positive factors required in “real” apps. we'll upload: Parsing JSON together with arrays of items (files as a result) and strings to dates (with NSDateFormatter) Passing facts from a desk view to a element view, utilizing a storyboard and segue. Tapping on a row within the desk view will open a aspect view exhibiting extra information approximately that gist making a new view controller thoroughly in code to demonstrate the content material of the gist’s records. Tapping on a filename will exhibit the file’s content material in an online view of these good points contain altering which view controller is proven yet in very other ways. The transition to the aspect view makes use of a segue and the transition to a file’s content material works by means of having a navigation controller push a brand new view controller onto its stack. 14. 1 JSON Parsing: Arrays & Dates whilst our venture is introduced, it makes a choice to the API to get a listing of gists in JSON. the information passes via a reaction serializer which parses the JSON to create Gist items. to date we’ve in simple terms been parsing a couple of string homes from the JSON for every gist. Now we’ll upload extracting an array of documents and a few of the dates that the gist used to be created and final up to date. We’ll have to upload a few houses to our Gist version category: classification Gist: ResponseJSONObjectSerializable { var identification: String? var description: String? var ownerLogin: String? var ownerAvatarURL: String? var url: String? var files:[File]? var createdAt:NSDate? var updatedAt:NSDate? // ... } And we’ll want a type to symbolize all the documents (a gist could have a number of documents in it). for every dossier we’ll simply pull out the filename and the URL of the uncooked content material so they can exhibit it in an online view. Let’s create a brand new dossier. quick classification and enforce the dossier type in it: import SwiftyJSON classification dossier: ResponseJSONObjectSerializable { var filename: String? var raw_url: String? } just like the Gist type, our dossier category has to be produced from a piece of JSON so it’ll enforce the ResponseJSONObjectSerializable protocol: category dossier: ResponseJSONObjectSerializable { var filename: String? var raw_url: String? required init? (json: JSON) { self. filename = json["filename"]. string self. raw_url = json["raw_url"]. string } } And we have to expand the initializer for Gists to address these records (we’ll get to the dates next): required init?

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