[SOLVED] IOS swift代写 Assignment 2

Assignment 2

The purpose of this assignment is to write more advanced iOS and Swift applications. The assignment consists of a programming task and a number of exercises that will be made available incrementally as milestones (so check the milestones inside this folder regularly to make sure you won’t miss out on your next milestone!) Milestones are due every week and need to be submitted in or before the lab they are due in.

Some Hints

• Read the UI Testing documentation (also available directly from within Xcode) on how to record UI interactions for testing.
• Some nice hints on user interface testing can be found on the UI Testing Cheat Sheet !
• UseUIAlertController with preferredStyle: .ActionSheet to display action sheet alerts.
• Use WKWebView(or UIWebView) to display web content (you can load a web page through the loadRequest() method)!  If you are using a UIWebView, make sure you set “Allow Arbitrary Loads” to “YES” for your app under “App Transport Security Settings” in order to be able to load non-secure web pages!
• In order to useWKWebView, you need to import WebKit in your project and link it against the WebKit framework!
• To create a URL request from a string, you can use the NSURLRequest(URL:)convenience initialiser, e.g.
• • NSURLRequest(URL:NSURL(string: “http://griffith.edu.au/”)!)
• Saving data in property list format is easy, e.g. if you have an array of strings, you can save it using
• • array.writeToFile(fileName, atomically: true)
• Loading such data back is equally easy, e.g. if you want to create a mutable array from the saved array above, use
• • optionalArray= NSMutableArray(contentsOfFile: fileName);
• iOSuses a sandbox, so you can only load and save files from certain locations.  E.g. if you want to save to a file called plist, you can use

let documentsDirectory =NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as NSString
let fileName = documentsDirectory.stringByAppendingPathComponent(“data.plist”)

• If the above does not seem to work for you for writing files, check that you have used.DocumentDirectory and not .DocumentationDirectory (which is read-only — this is a common mistake)!
• Core Data documents can be managed using the managedObjectContext property of UIManagedDocument
• The NSFetchedResultsController is a controller class that provides all the necessary methods you can use to update a table from a UITableViewController subclass!
• To convert an address to GPS coordinates for CoreLocation, you can use the geocodeAddressString()function of the CLGeocoder  The function takes a trailing closure that passes in an array of place marks whose location you can pass to your map view.
• more hints to come — check back regularly!