Terminating app due to uncaught exception 'NSInvalidArgumentException' - cocoa

Question

I have the following problem. I inherited an app and I am trying to modify it. The original functionality lets me add a task with some text notes. I want to add an icon to make it more visually appealing. When I modify the code signature to pass the icon (in reality I am only passing the name of the icon in a NSString) the modules stops working and the app throws the following error, basically an unrecognized selector:
2011-03-19 22:41:17.713 app[82653:207] -[RemindersDataManager addReminder:notes:locations:icon:]: unrecognized selector sent to instance 0xc700bc0
2011-03-19 22:41:17.716 app[82653:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[RemindersDataManager addReminder:notes:locations:icon:]: unrecognized selector sent to instance 0xc700bc0'
*** Call stack at first throw:
(
0 CoreFoundation 0x0162abe9 __exceptionPreprocess + 185
1 libobjc.A.dylib 0x0177f5c2 objc_exception_throw + 47
2 CoreFoundation 0x0162c6fb -[NSObject(NSObject) doesNotRecognizeSelector:] + 187
3 CoreFoundation 0x0159c366 ___forwarding___ + 966
4 CoreFoundation 0x0159bf22 _CF_forwarding_prep_0 + 50
5 app 0x000158b1 -[GeoRemindersManager addReminder:notes:locations:icon:] + 121
6 app 0x0000f268 -[AddReminderViewController addReminder] + 655
7 UIKit 0x0053ea6e -[UIApplication sendAction:to:from:forEvent:] + 119
8 UIKit 0x005cd1b5 -[UIControl sendAction:to:forEvent:] + 67
9 UIKit 0x005cf647 -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 527
10 UIKit 0x005ce1f4 -[UIControl touchesEnded:withEvent:] + 458
11 UIKit 0x007c9987 _UIGestureRecognizerSortAndSendDelayedTouches + 3609
12 UIKit 0x007ca0fc _UIGestureRecognizerUpdateObserver + 927
13 CoreFoundation 0x0160bfbb __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 27
14 CoreFoundation 0x015a10e7 __CFRunLoopDoObservers + 295
15 CoreFoundation 0x01569bd7 __CFRunLoopRun + 1575
16 CoreFoundation 0x01569240 CFRunLoopRunSpecific + 208
17 CoreFoundation 0x01569161 CFRunLoopRunInMode + 97
18 GraphicsServices 0x01ce4268 GSEventRunModal + 217
19 GraphicsServices 0x01ce432d GSEventRun + 115
20 UIKit 0x0054d42e UIApplicationMain + 1160
21 app 0x00002d1c main + 102
22 app 0x00002cad start + 53
)
terminate called after throwing an instance of 'NSException'.
These are the original module's signature
AddReminderViewController.h
// user actions
- (IBAction)addReminder;
AddReminderViewController.m
- (IBAction)addReminder {
if ([self dataVerification]) {
BOOL result = NO;
// try to add one geo fence or several geo fences
if (self.address) {
result = [[GeoRemindersManager sharedInstance] addReminder:self.titleField.text notes:self.detailsField.text
coordinate:self.coordinate address:self.address];
}
else if (self.locations) {
result = [[GeoRemindersManager sharedInstance] addReminder:self.titleField.text notes:self.detailsField.text locations:self.locations];
}
// successfully added - close
if (result) {
[self.navigationController popToRootViewControllerAnimated:YES];
}
GeoRemindersManager.h
// shared instance
+ (GeoRemindersManager *)sharedInstance;
// workflow
- (void)start;
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes
coordinate:(CLLocationCoordinate2D)coordinate address:(NSString *)address;
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes location:(LocationEntity *)location;
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes locations:(NSArray *)locations;
- (void)changeReminder:(NSString *)title title:(NSString *)newTitle notes:(NSString *)newNotes;
- (void)removeReminder:(NSString *)title;
- (ReminderEntity *)getReminderWithTitle:(NSString *)title;
- (NSArray *)getLoctionsWithCoordinate:(CLLocationCoordinate2D)coordinate;
- (void)wakeByLocalNotification:(NSDictionary *)info;
- (void)memoryWarning;
- (CLLocation *)getCurrentLocation;
// extra
- (BOOL)checkReminderExistance:(NSString *)title;
- (void)updateDelegatesWithReminder:(NSString *)title notes:(NSString *)notes;
GeoRemindersManager.m
+ (GeoRemindersManager *)sharedInstance {
geoapp_iphoneAppDelegate *appDelegate = (geoapp_iphoneAppDelegate *)[MLSApplication instance];
return appDelegate.remindersManager;
}
#pragma mark -
#pragma mark workflow
- (void)start {
// start first locating
[deviceLocation forceStart];
// add geo fences to device location
NSArray *locations = [geoDataManager getAllRemindersLocations];
[deviceLocation addMonitoringLocations:locations];
// invoke delegate
[delegateMap didAddMonitoringLocations:locations];
}
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes
coordinate:(CLLocationCoordinate2D)coordinate address:(NSString *)address
{
if (![self checkReminderExistance:title]) {
return NO;
}
// all verifications are OK, adding reminder
[geoDataManager addReminder:title notes:notes coordinate:coordinate address:address];
[self updateDelegatesWithReminder:title notes:notes];
return YES;
}
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes location:(LocationEntity *)location {
return [self addReminder:title notes:notes locations:[NSArray arrayWithObject:location]];
}
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes locations:(NSArray *)locations {
if (![self checkReminderExistance:title]) {
return NO;
}
// all verifications are OK, adding reminder
[geoDataManager addReminder:title notes:notes locations:locations];
[self updateDelegatesWithReminder:title notes:notes];
return YES;
}
and the modified ones:
AddReminderViewController.m
- (IBAction)addReminder {
if ([self dataVerification]) {
BOOL result = NO;
// try to add one geo fence or several geo fences
if (self.address) {
result = [[GeoRemindersManager sharedInstance] addReminder:self.titleField.text notes:self.detailsField.text coordinate:self.coordinate address:self.address icon:(NSString *)iconButton.currentTitle];
}
else if (self.locations) {
result = [[GeoRemindersManager sharedInstance] addReminder:self.titleField.text notes:self.detailsField.text locations:self.locations icon:(NSString *)iconButton.currentTitle];
}
// successfully added - close
if (result) {
[self.navigationController popToRootViewControllerAnimated:YES];
}
}
}
GeoRemindersManager.h
// shared instance
+ (GeoRemindersManager *)sharedInstance;
// workflow
- (void)start;
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes
coordinate:(CLLocationCoordinate2D)coordinate address:(NSString *)address icon:(NSString *)icon;
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes location:(LocationEntity *)location icon:(NSString *)icon;
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes locations:(NSArray *)locations icon:(NSString *)icon;
- (void)changeReminder:(NSString *)title title:(NSString *)newTitle notes:(NSString *)newNotes icon:(NSString *)icon;
- (void)removeReminder:(NSString *)title;
- (ReminderEntity *)getReminderWithTitle:(NSString *)title;
- (NSArray *)getLoctionsWithCoordinate:(CLLocationCoordinate2D)coordinate;
- (void)wakeByLocalNotification:(NSDictionary *)info;
- (void)memoryWarning;
- (CLLocation *)getCurrentLocation;
// extra
- (BOOL)checkReminderExistance:(NSString *)title;
- (void)updateDelegatesWithReminder:(NSString *)title notes:(NSString *)notes icon:(NSString *)icon;
GeoRemindersManager.m
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes
coordinate:(CLLocationCoordinate2D)coordinate address:(NSString *)address icon:(NSString *)icon
{
if (![self checkReminderExistance:title]) {
return NO;
}
// all verifications are OK, adding reminder
[geoDataManager addReminder:title notes:notes coordinate:coordinate address:address icon:icon];
[self updateDelegatesWithReminder:title notes:notes icon:icon];
return YES;
}
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes location:(LocationEntity *)location icon:(NSString *)icon{
return [self addReminder:title notes:notes locations:[NSArray arrayWithObject:location icon:icon]];
}
- (BOOL)addReminder:(NSString *)title notes:(NSString *)notes locations:(NSArray *)locations icon:(NSString *)icon {
if (![self checkReminderExistance:title]) {
return NO;
}
// all verifications are OK, adding reminder
[geoDataManager addReminder:title notes:notes locations:locations icon:icon];
[self updateDelegatesWithReminder:title notes:notes];
return YES;
}
So in short, the only thing I added was an additional argument to those function for the icon name as a NSString… Any clues? All help greatly appreciated! Thanks

Answer 1

The error message indicates that the unrecognized selector was called on an object of class RemindersDataManager, probably from the line
[geoDataManager addReminder:title notes:notes locations:locations icon:icon];
You should find the implementation of that class and add your icon parameter to its methods too (or stop passing icon to it if it has no use for the icon).