Tag: cs193p

Assignment #6 Task #2

Please note, this blog entry is from a previous course. You might want to check out the current one.

When the user chooses a Virtual Vacation from the list, bring up a static table view with two choices: Itinerary and Tag Search.

In both storyboards add an additional table view controller, create a subclass for it and set it up in story board. Create a push segue from the prototype cell of the vacations table view controller to the new table view controller.

The tricky part of this task is to make the table static. Select the table view of the table view controller and change its content type from previously Dynamic Prototypes to Static Cells. Label the first cell “Itinerary”, the second “Tag Search” and delete the third cell.
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Assignment #6 Task #1

Please note, this blog entry is from a previous course. You might want to check out the current one.

The sixth assignment continues the application from the last assignments which create a Flickr photo browser. This assignment will add features emphasizing the use of Core Data.

This application lets the user assemble a Virtual Vacation of places in the world to visit. Users will use the photo-choosing capabilities of your Fast Map Places application to choose photos in the places they want to go. In this application you will have two major tasks: allowing the user to choose where they want to go and allowing the user to “go on vacation” in their Virtual Vacation spots. You will accomplish the former by adding a “Visit/Unvisit” button to the scenes in your Fast Map Places where a photo is displayed. You will accomplish the latter by adding a new tab to your Tab Bar Controller which lets the user peruse their Virtual Vacation either by place or by searching for tags that were found in the Flickr dictionaries for the photos they chose to visit.

1. Add a new tab to your application that displays a new table view controller showing a list of all the “Virtual Vacations” found in the user’s Documents directory in their sandbox. A Virtual Vacation file is created by saving a UIManagedDocument (more on this below). Each vacation must have it’s own separate file in the Documents directory.

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Friday Session #6: Building Apps that People Want

Please note, this blog entry is from a previous course. You might want to check out the current one.

This weeks Friday session addresses marketing concepts of apps. It can be found on iTunes titled “Building Apps that People Want (November 11, 2011)”.

The lecturer is Mike Ghaffary, director of business development at Yelp and co-founder of BarMax, the most expensive iPhone/iPad app on the AppStore. He stresses three keys in the success of an app – its impact (“it should change the world” and “solve a real problem”), the criticality of its distribution (“publish early”, “get distribution partners”, “use users feedback”), and the composition of the team (“product manager is essential”, “friends do not make good business partners – coworkers do”).

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Lecture #14: Core Data Demo

Please note, this blog entry is from a previous course. You might want to check out the current one.

Lecture fourteen is named “14. Core Data Demo (November 10, 2011)” and can be found at iTunes. Its slides are available at Stanford.

The theoretical part of this lecture is quite short providing an overview about Core Data thread safety and its usability for table views.

NSManagedObjectContext is not thread safe, thus it can only be accessed in the thread that created it. Because access is usually very fast, using the main thread is mostly file. Another approach is to use
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Lecture #13: Core Data

Please note, this blog entry is from a previous course. You might want to check out the current one.

Lecture thirteen is named “13. Core Data (November 8, 2011)” and can be found at iTunes. Its slides are available at Stanford.

This lecture covers Core Data and Documents, NSNotificationCenter and Objective-C Categories.

Core Data in object-oriented API to store data in a database based usually on SQL. Once a visual data mapping is created between database and objects, objects are created and queried using an object-oriented API. The columns in the database table are accessed vie @properties.
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Assignment #5 Extra Task #2

Please note, this blog entry is from a previous course. You might want to check out the current one.

Allow the user to switch between a normal map view, a satellite map view and a hybrid map view (you’ll likely want to use a UISegmentedControl for this).

During the lazy instantiation of the map view add an additional sub view for a control segment. The control segment is initialized with an array holding the three possible selections. Its position is calculated by using the horizontal center of the map, and subtracting the size of the segment from the height of the map. To enable auto-rotation the the left and right as well as the top margin are set to be flexible (equal to a spring in story board). The “normal” view is set as initial view. When the value of the control segment is changed, the method changeMapType: is called.
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