Question

Here goes a newbie question:

1. Create a new project in Xcode: File > New Project and select Navigation-based Application from iPhone OS templates.

2. Install json-framework as explained here.

3. Edit RootViewController.h‘s interface section into this:

   @interface RootViewController : UITableViewController {
       NSURLRequest *request;
       NSURLConnection *theConnection;
       NSMutableData *receivedData;
       NSArray *faculties;
   }
   

4. Edit RootViewController.m and implement a couple of simple things. Replace <your_domain_name_goes_here> with a valid domain name where a web service will answer to your calls.

5. URL above will output a JSON string like this.

6. Now, if you build&run this code, in debugger console you’ll get:

   Attaching to process 35594.
   2010-07-19 13:15:31.307 WSMobileTest[35594:207] Succeeded! Received 580 bytes of data
   Program received signal:  “EXC_BAD_ACCESS”.
   

Any ideas?

Developer Information:

Version:        3.2 (10M2262)
Location:       /Developer
Applications:
    Xcode:              3.2.3 (1688)
    Interface Builder:  3.2.3 (788)
    Instruments:        2.7 (2529)
    Dashcode:           3.0.1 (330)
SDKs:
    Mac OS X:
        10.5:   (9L31a)
        10.6:   (10M2262)
    iPhone OS:
        3.2:    (7B367)
        4.0:    (8A293)
    iPhone Simulator:
        3.2:    (7W367a)
        4.0:    (8A293)

Answer 1

Congratulations: You’ve included everything except the line that causes the crash. Set a breakpoint and step through the debugger until it crashes, or look at the backtrace, or something.

In this case, I think you mean faculties = [[jsonString JSONValue] retain;.