Я получаю сообщение об ошибке при попытке запустить приложение на симуляторе.Я скопировал проект JSON (JSON Framework) в свое приложение, но мой симулятор зависает при компиляции следующих строк (я использую iOS 4.2)
- (void)viewDidLoad {
[super viewDidLoad];
NSString *jsonString = [NSString stringWithString:@"{\"foo\": \"bar\"}"];
NSDictionary *dictionary = [jsonString JSONValue];
NSLog(@"Dictionary value for \"foo\" is \"%@\"", [dictionary objectForKey:@"foo"]);
}
ОШИБКА:
2011-03-02 13:33:37.304 test[10918:207] -[NSCFString JSONValue]: unrecognized selector sent to instance 0x3034
2011-03-02 13:33:37.308 test[10918:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSCFString JSONValue]: unrecognized selector sent to instance 0x3034'
*** Call stack at first throw:
(
0 CoreFoundation 0x00da7be9 __exceptionPreprocess + 185
1 libobjc.A.dylib 0x00efc5c2 objc_exception_throw + 47
2 CoreFoundation 0x00da96fb -[NSObject(NSObject) doesNotRecognizeSelector:] + 187
3 CoreFoundation 0x00d19366 ___forwarding___ + 966
4 CoreFoundation 0x00d18f22 _CF_forwarding_prep_0 + 50
5 test 0x000025d7 -[testViewController viewDidLoad] + 119
6 UIKit 0x0035e65e -[UIViewController view] + 179
7 test 0x0000237e -[testAppDelegate application:didFinishLaunchingWithOptions:] + 79
8 UIKit 0x002b11fa -[UIApplication _callInitializationDelegatesForURL:payload:suspended:] + 1163
9 UIKit 0x002b355e -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 439
10 UIKit 0x002bddb2 -[UIApplication handleEvent:withNewEvent:] + 1533
11 UIKit 0x002b6202 -[UIApplication sendEvent:] + 71
12 UIKit 0x002bb732 _UIApplicationHandleEvent + 7576
13 GraphicsServices 0x016dda36 PurpleEventCallback + 1550
14 CoreFoundation 0x00d89064 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 52
15 CoreFoundation 0x00ce96f7 __CFRunLoopDoSource1 + 215
16 CoreFoundation 0x00ce6983 __CFRunLoopRun + 979
17 CoreFoundation 0x00ce6240 CFRunLoopRunSpecific + 208
18 CoreFoundation 0x00ce6161 CFRunLoopRunInMode + 97
19 UIKit 0x002b2fa8 -[UIApplication _run] + 636
20 UIKit 0x002bf42e UIApplicationMain + 1160
21 test 0x0000230c main + 102
22 test 0x0000229d start + 53
)
terminate called after throwing an instance of 'NSException'
Program received signal: “SIGABRT”.
(gdb)