Abort on iPhone simulator - iphone

Question

I am receiving an SIGABRT error on the last line of this code loginButton.enabled = YES;. It was working this morning and now this error comes up.
-(IBAction)login:(id)sender
{
UIButton *loginButton = (UIButton *)sender;
loginButton.enabled = NO;
NSString *filePath = [self dataFilePath];
if([[NSFileManager defaultManager] fileExistsAtPath:filePath])
{
NSArray *array = [[NSArray alloc] initWithContentsOfFile:filePath];
NSString *nameString = [[NSString alloc] init];
NSString *contactIdString = [[NSString alloc] init];
NSString *genderString = [[NSString alloc] init];
NSString *contactTypeString = [[NSString alloc] init];
nameString = [array objectAtIndex:0];
contactIdString = [array objectAtIndex:1];
genderString = [array objectAtIndex:2];
contactTypeString = [array objectAtIndex:3];
self.name = nameString;
self.contactId = contactIdString;
self.gender = genderString;
self.contactType = contactTypeString;
[self.userArray removeAllObjects];
[self performSelectorInBackground:#selector(sendData) withObject:nil];
[nameString release];
[contactIdString release];
[genderString release];
[contactTypeString release];
UIBarButtonItem *logoutButton = [[UIBarButtonItem alloc] initWithTitle:#"Logout" style:UIBarButtonItemStylePlain target:self action:#selector(logout:)];
//[logoutButton setTitle:#"Logout"];
[[self navigationItem] setRightBarButtonItem:logoutButton];
[logoutButton release];
}
else
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"New User" message:#"It seems you have not used FaceDirectory before, please go to My Details and fill out the information then click save." delegate:self cancelButtonTitle:#"Ok" otherButtonTitles:nil];
[alert show];
[alert release];
}
loginButton.enabled = YES;
}
Here is the error dump.
2011-08-12 11:41:56.700 FaceConnect[1651:207] Reachability Flag Status: -R ------- networkStatusForFlags
2011-08-12 11:41:59.247 FaceConnect[1651:207] selected first row
2011-08-12 11:42:02.344 FaceConnect[1651:6b07] *** __NSAutoreleaseNoPool(): Object 0x7a0cf10 of class NSConcreteMutableData autoreleased with no pool in place - just leaking
2011-08-12 11:42:02.344 FaceConnect[1651:207] -[__NSCFData setEnabled:]: unrecognized selector sent to instance 0x6f4b820
2011-08-12 11:42:02.344 FaceConnect[1651:6b07] *** __NSAutoreleaseNoPool(): Object 0x7a108b0 of class NSConcreteMutableData autoreleased with no pool in place - just leaking
2011-08-12 11:42:02.344 FaceConnect[1651:6b07] *** __NSAutoreleaseNoPool(): Object 0x7e06e70 of class NSConcreteMutableData autoreleased with no pool in place - just leaking
2011-08-12 11:42:02.344 FaceConnect[1651:6b07] *** __NSAutoreleaseNoPool(): Object 0x7e06220 of class NSConcreteMutableData autoreleased with no pool in place - just leaking
2011-08-12 11:42:02.345 FaceConnect[1651:6b07] *** __NSAutoreleaseNoPool(): Object 0x7e06ca0 of class NSConcreteMutableData autoreleased with no pool in place - just leaking
2011-08-12 11:42:02.345 FaceConnect[1651:6b07] *** __NSAutoreleaseNoPool(): Object 0x7e068c0 of class NSURL autoreleased with no pool in place - just leaking
2011-08-12 11:42:02.345 FaceConnect[1651:6b07] *** __NSAutoreleaseNoPool(): Object 0x7e061c0 of class NSMutableURLRequest autoreleased with no pool in place - just leaking
2011-08-12 11:42:02.345 FaceConnect[1651:6b07] *** __NSAutoreleaseNoPool(): Object 0x7e069e0 of class NSCFString autoreleased with no pool in place - just leaking
2011-08-12 11:42:02.345 FaceConnect[1651:6b07] *** __NSAutoreleaseNoPool(): Object 0x7e06b30 of class NSCFString autoreleased with no pool in place - just leaking
2011-08-12 11:42:02.345 FaceConnect[1651:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFData setEnabled:]: unrecognized selector sent to instance 0x6f4b820' *** Call stack at first throw: (
0 CoreFoundation 0x0249d919 __exceptionPreprocess + 185
1 libobjc.A.dylib 0x025eb5de objc_exception_throw + 47
2 CoreFoundation 0x0249f42b -[NSObject(NSObject) doesNotRecognizeSelector:] + 187
3 CoreFoundation 0x0240f116 ___forwarding___ + 966
4 CoreFoundation 0x0240ecd2_CF_forwarding_prep_0 + 50
5 FaceConnect 0x0000a7ea -[HubViewController login:] + 1802
6 UIKit 0x00123e14 -[UIApplication sendAction:to:from:forEvent:] + 119
7 UIKit 0x0032b14b-[UIBarButtonItem(UIInternal) _sendAction:withEvent:] + 156
8 UIKit 0x00123e14 -[UIApplication sendAction:to:from:forEvent:] + 119
9 UIKit 0x001ad6c8 -[UIControlsendAction:to:forEvent:] + 67
10 UIKit 0x001afb4a -[UIControl(Internal) _sendActionsForEvents:withEvent:] +527
11 UIKit 0x001ae6f7 -[UIControltouchesEnded:withEvent:] + 458
12 UIKit 0x001472ff -[UIWindow _sendTouchesForEvent:] + 567
13 UIKit 0x001291ec -[UIApplication sendEvent:] + 447
14 UIKit 0x0012dac4 _UIApplicationHandleEvent + 7495
15 GraphicsServices 0x02924afa PurpleEventCallback + 1578
16 CoreFoundation 0x0247edc4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__+ 52
17 CoreFoundation 0x023df737__CFRunLoopDoSource1 + 215
18 CoreFoundation 0x023dc9c3 __CFRunLoopRun + 979
19 CoreFoundation 0x023dc280 CFRunLoopRunSpecific + 208
20 CoreFoundation 0x023dc1a1 CFRunLoopRunInMode + 97
21 GraphicsServices 0x029232c8 GSEventRunModal + 217
22 GraphicsServices 0x0292338d GSEventRun + 115
23 UIKit 0x00131b58 UIApplicationMain + 1160
24 FaceConnect 0x00001ac9 main + 121
25 FaceConnect 0x00001a45 start + 53
26 ??? 0x00000001 0x0 + 1 )
2011-08-12 11:42:02.346 FaceConnect[1651:6b07] *** __NSAutoreleaseNoPool(): Object 0x7e06a40 of class NSCFString autoreleased with no pool in place - just leaking
2011-08-12 11:42:02.346 FaceConnect[1651:6b07] *** __NSAutoreleaseNoPool(): Object 0x6f4c0c0 of class NSCFString autoreleased with no pool in place - just leaking terminate called after throwing an instance of 'NSException' Current language: auto; currently objective-c
I have just checked it on my iPhone, and the application does not crash. It only happens on the simulator.

Answer 1

-(IBAction)login:(id)sender {
[(UIButton*) sender setEnabled:NO];
if([[NSFileManager defaultManager] fileExistsAtPath:filePath]) {
NSArray *array = [[NSArray alloc] initWithContentsOfFile:filePath];
NSString* name = [array objectAtIndex:0];
NSString* contactId = [array objectAtIndex:1]; // depends if it is an integer then use int
NSString* gender = [array objectAtIndex:2];
NSString* contactType = [array objectAtIndex:3];
//[self.userArray removeAllObjects]; // what is your user array and why you are removing all the objects
// i could not find where you are setting the value for userArray
[self.userArray arrayWithObjects:self.name, self.contactId, self.gender,self.contactType, nil];
[self performSelectorInBackground:#selector(sendData) withObject:nil];
/*if (loginButton.selected == NO) {
// Represents user needs to login. Code for login user.
}else
{
[loginButton setTitle:#"Logout"];
}
// toggle the login/logout states.
loginButton.selected = !loginButton.selected;*/
UIBarButtonItem *logoutButton = [[UIBarButtonItem alloc] initWithTitle:#"Logout" style:UIBarButtonItemStylePlain target:self action:#selector(logout:)];
//[logoutButton setTitle:#"Logout"];
[[self navigationItem] setRightBarButtonItem:logoutButton];
[logoutButton release];
}
else {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"New User" message:#"It seems you have not used FaceDirectory before, please go to My Details and fill out the information then click save." delegate:self cancelButtonTitle:#"Ok" otherButtonTitles:nil];
[alert show];
[alert release];
}
[(UIButton*) sender setEnabled:YES];
}
i could not find where you are setting the value for userArray and so i thought i think you are binding the info to userArray and sending
-(id)sendData{
//Do whatever you want to do with userArray
}
-(void)viewDidUnLoad{
self.userarray = nil;
[super viewDidlUnload];
}
-(void)dealloc{
[userArray release];
[super dealloc];
}

Answer 2

You create an empty strings with alloc/init, and then you change them to value returned by objectAtIndex:. This causes the pointer to point to an autoreleased value. After you release your strings, the application will crash because retain count will become less than zero.

Answer 3

I guess the error is propagating from FaceConnect. Please check, it's showing a lot of leaks and warnings.