Finalizando la aplicación debido a una excepción no detectada 'NSInternalInconsistencyException'

Right I have 5 views. One of the views is called RecordViewController. (RecordViewController is causing the error) I can switch through views fine. But once I get onto the recordviewcontroller, I can switch to another view. But if I want to switch back to recordviewcontroller. It throws me out of my app and gives me this error:

2011-08-27 19:52:00.358 app[1737:707] *** Assertion failure in +[RecordViewController alloc], /Users/user/Desktop/app/Classes/RecordViewController.m:111
2011-08-27 19:52:00.373 app[1737:707] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Attempted to allocated second singleton  RecordViewController'
*** Call stack at first throw:
(
    0   CoreFoundation                      0x36fd064f __exceptionPreprocess + 114
    1   libobjc.A.dylib                     0x34229c5d objc_exception_throw + 24
    2   CoreFoundation                      0x36fd0491 +[NSException raise:format:arguments:] + 68
    3   Foundation                          0x353d0573 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 62
    4   app                             0x00014bdd +[RecordViewController alloc] + 212
    5   app                             0x00013fd3 -[EffectsViewController goRecord:] + 34
    6   CoreFoundation                      0x36f40571 -[NSObject(NSObject) performSelector:withObject:withObject:] + 24
    7   UIKit                               0x35dd2ec9 -[UIApplication sendAction:to:from:forEvent:] + 84
    8   UIKit                               0x35dd2e69 -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 32
    9   UIKit                               0x35dd2e3b -[UIControl sendAction:to:forEvent:] + 38
    10  UIKit                               0x35dd2b8d -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 356
    11  UIKit                               0x35dd283b -[UIControl touchesBegan:withEvent:] + 186
    12  UIKit                               0x35dd1bb1 -[UIWindow _sendTouchesForEvent:] + 300
    13  UIKit                               0x35dd156f -[UIWindow sendEvent:] + 262
    14  UIKit                               0x35dba313 -[UIApplication sendEvent:] + 298
    15  UIKit                               0x35db9c53 _UIApplicationHandleEvent + 5090
    16  GraphicsServices                    0x366f4e77 PurpleEventCallback + 666
    17  CoreFoundation                      0x36fa7a97 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 26
    18  CoreFoundation                      0x36fa983f __CFRunLoopDoSource1 + 166
    19  CoreFoundation                      0x36faa60d __CFRunLoopRun + 520
    20  CoreFoundation                      0x36f3aec3 CFRunLoopRunSpecific + 230
    21  CoreFoundation                      0x36f3adcb CFRunLoopRunInMode + 58
    22  GraphicsServices                    0x366f441f GSEventRunModal + 114
    23  GraphicsServices                    0x366f44cb GSEventRun + 62
    24  UIKit                               0x35de4d69 -[UIApplication _run] + 404
    25  UIKit                               0x35de2807 UIApplicationMain + 670
    26  app                                 0x00002e73 main + 70
    27  app                                 0x00002e28 start + 40
)
terminate called after throwing an instance of 'NSException'

Here is the code for recordviewcontroller

-(void)countUp {

    mainInt += 1;
    seconds.text = [NSString stringWithFormat:@"%02d", mainInt];

}

-(IBAction)goBack:(id)sender; {

    [self dismissModalViewControllerAnimated:YES];
}


static RecordViewController *sharedInstance = nil;


+(RecordViewController *) sharedInstance {
    @synchronized([RecordViewController class])
    {
        if (!sharedInstance)
        {
            [[self alloc]init];
        }
        return sharedInstance;
    }
    return nil;
}

+(id) alloc
{
    @synchronized([RecordViewController class])
    {
        NSAssert(sharedInstance == nil, @"Attempted to allocated second singleton  RecordViewController");
        sharedInstance = [super alloc];
        return sharedInstance;
    }
    return nil;
}


- (id)autorelease {
    return self;
}


- (void)viewDidLoad {
    [super viewDidLoad];


    toggle = YES;
    btnPlay.hidden = YES;


    AVAudioSession * audioSession = [AVAudioSession sharedInstance];

    [audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error: &error];

    [audioSession setActive:YES error: &error];

}





- (IBAction)  start_button_pressed{


    if(toggle)
    {
        toggle = NO;
        [actSpinner startAnimating];
        [btnStart setImage:[UIImage imageNamed:@"recordstop.png"] forState:UIControlStateNormal];
        mainInt = 0;
        theTimer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(countUp) userInfo:nil repeats:YES];


        btnPlay.enabled = toggle;
        btnPlay.hidden = !toggle;


        NSMutableDictionary* recordSetting = [[NSMutableDictionary alloc] init];
        [recordSetting setValue :[NSNumber numberWithInt:kAudioFormatAppleIMA4] forKey:AVFormatIDKey];
        [recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey]; 
        [recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];


        recordedTmpFile = [NSURL fileURLWithPath:[NSTemporaryDirectory() stringByAppendingPathComponent: [NSString stringWithFormat: @"%.0f.%@", [NSDate timeIntervalSinceReferenceDate] * 1000.0, @"caf"]]];
        NSLog(@"Using File called: %@",recordedTmpFile);

        recorder = [[ AVAudioRecorder alloc] initWithURL:recordedTmpFile settings:recordSetting error:&error];

        [recorder setDelegate:self];

        [recorder prepareToRecord];

        [recorder record];


    }
    else
    {
        toggle = YES;
        [actSpinner stopAnimating];
        [btnStart setImage:[UIImage imageNamed:@"recordrecord.png"] forState:UIControlStateNormal];
        btnPlay.enabled = toggle;
        btnPlay.hidden = !toggle;
        [theTimer invalidate];

        NSLog(@"Using File called: %@",recordedTmpFile);

        [recorder stop];
    }
}

- (void)didReceiveMemoryWarning {
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];

    // Release any cached data, images, etc that aren't in use.
}

-(IBAction) play_button_pressed{


    AVAudioPlayer * avPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:recordedTmpFile error:&error];
    [avPlayer prepareToPlay];
    [avPlayer play];

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationLandscapeLeft || interfaceOrientation == UIInterfaceOrientationLandscapeRight);
}

- (void)viewDidUnload {
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
    //Clean up the temp file.
    NSFileManager * fm = [NSFileManager defaultManager];
    [fm removeItemAtPath:[recordedTmpFile path] error:&error];
    //Call the dealloc on the remaining objects.
    [recorder dealloc];
    recorder = nil;
    recordedTmpFile = nil;
}

- (void)dealloc {
    [super dealloc];
}

@end

Muchas Gracias

preguntado el 27 de agosto de 11 a las 18:08

1 Respuestas

RecordViewController is declared as a singleton (Apple docs on Singletons). It would never really make sense to have a singleton view controller, but I'm going to ignore that and simply help you.

The reason you are getting that exception is because you are calling [RecordViewController alloc] twice. It should only be called once because it is a singleton.

To fix the problem you need to call [RecordViewController sharedInstance] every time you want to interact with the class, not [[RecordViewController alloc] init] like you might be accustomed to.

Respondido 27 ago 11, 23:08

Recordviewcontroller, has a voice recorder on it - I'm using a singleton because this allows me to switch views while the voice record recording. So what part of my code specifically to i need to delete or call? Thanks - LA12

I can't be that specific with where you need to modify your code but looking at the exception I can see there is one place inside [EffectsViewController goRecord] Just go through your code and replace [[RecordViewController alloc] init] with [RecordViewController sharedInstance] - Josua Pedersen

Okay I've changed that. But now when I try to go onto it I get 'Program received signal: “EXC_BAD_ACCESS”. Data Formatters temporarily unavailable, will re-try after a 'continue'. (The program being debugged was signaled while in a function called from GDB. GDB has restored the context to what it was before the call. To change this behavior use "set unwindonsignal off" Evaluation of the expression containing the function (gdb_objc_startDebuggerMode) will be abandoned.)' :( - LA12

That can happen for a number of different reasons. I would suggest trying to solve all memory leaks in the program not focus on getting this class right. A tip is to use "Analyze" in the "Product" menu item, that utility will go through all your code and notify you of thing you might have done wrong. After that look through the app in Instruments (Product->Profile) and use the "Leaks" instrument. - Josua Pedersen

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