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POApp crashes with reason: Collection <__NSArrayM: 0x7071700> was mutated while being enumerated
 

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  1. POApp crashes with reason: Collection <__NSArrayM: 0x7071700> was mutated while being enumerated
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    <p>Can you please help me to find reason why my app crashes after clicking on segmented control? Not allways, but usualy after some clicks.</p> <p>Error message:</p> <pre><code> *** Terminating app due to uncaught exception 'NSGenericException', reason: '*** Collection &lt;__NSArrayM: 0x7071700&gt; was mutated while being enumerated.( "&lt;PLImageTableSegment: 0x7051d30&gt;", "&lt;PLImageTableSegment: 0x7051d30&gt;", "&lt;PLImageTableSegment: 0x7051d30&gt;", "&lt;PLImageTableSegment: 0x7051d30&gt;", "&lt;PLImageTableSegment: 0x7051d30&gt;", "&lt;PLImageTableSegment: 0x7051d30&gt;", "&lt;PLImageTableSegment: 0x7051d30&gt;", "&lt;PLImageTableSegment: 0x7051d30&gt;", "&lt;PLImageTableSegment: 0x7051d30&gt;", "&lt;PLImageTableSegment: 0x7051d30&gt;", "&lt;PLImageTableSegment: 0x7051d30&gt;", "&lt;PLImageTableSegment: 0x7051d30&gt;" )' *** Call stack at first throw: ( 0 CoreFoundation 0x00e51be9 __exceptionPreprocess + 185 1 libobjc.A.dylib 0x00fa65c2 objc_exception_throw + 47 2 CoreFoundation 0x00e516a9 __NSFastEnumerationMutationHandler + 377 3 CoreFoundation 0x00e4ae78 -[__NSArrayM dealloc] + 152 4 PhotoLibrary 0x0ac3a1c4 +[PLImageTable releaseSegmentCache] + 37 5 PhotoLibrary 0x0ac1898f -[PLPhotoLibrary dealloc] + 183 6 CoreFoundation 0x00d68a6c CFRelease + 92 7 CoreFoundation 0x00d8db8d _CFAutoreleasePoolPop + 237 8 Foundation 0x00018443 -[NSAutoreleasePool release] + 167 9 UIKit 0x002c9bf2 _UIApplicationHandleEvent + 8792 10 GraphicsServices 0x01787a36 PurpleEventCallback + 1550 11 CoreFoundation 0x00e33064 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 52 12 CoreFoundation 0x00d936f7 __CFRunLoopDoSource1 + 215 13 CoreFoundation 0x00d90983 __CFRunLoopRun + 979 14 CoreFoundation 0x00d90240 CFRunLoopRunSpecific + 208 15 CoreFoundation 0x00d90161 CFRunLoopRunInMode + 97 16 GraphicsServices 0x01786268 GSEventRunModal + 217 17 GraphicsServices 0x0178632d GSEventRun + 115 18 UIKit 0x002cd42e UIApplicationMain + 1160 19 Reportieris 0x00001c60 main + 102 20 Reportieris 0x00001bf1 start + 53 ) terminate called after throwing an instance of 'NSException' </code></pre> <p>header file:</p> <pre><code>#import &lt;UIKit/UIKit.h&gt; #import &lt;MessageUI/MessageUI.h&gt; @interface MainViewController : UIViewController &lt;MFMailComposeViewControllerDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate,UIActionSheetDelegate, UIScrollViewDelegate&gt;{ IBOutlet UITextField *virsraksts; IBOutlet UITextField *paraksts; IBOutlet UITextField *apraksts; IBOutlet UIPageControl *pageControl; UISegmentedControl *segControl; UIScrollView *horView; UIButton *nosutitButton; UIImage *im; NSMutableArray *bildes; NSMutableArray *bildesFileName; } @property (nonatomic, retain) UITextField *virsraksts; @property (nonatomic, retain) UITextField *paraksts; @property (nonatomic, retain) UITextField *apraksts; @property (nonatomic, retain) IBOutlet UIButton *nosutitButton; @property (nonatomic, retain) IBOutlet UIScrollView *horView; @property (nonatomic, retain) IBOutlet UISegmentedControl *segControl; @property (nonatomic, retain) IBOutlet UIPageControl *pageControl; -(IBAction)textFieldDoneEditing:(id)sender; - (IBAction)buttonPressed; -(NSString *)dataFilePath; -(void)applicationWillTerminate:(NSNotification *)notification; - (IBAction)segControlClicked:(id)sender; @end </code></pre> <p>implementation file:</p> <pre><code>#import "MainViewController.h" @implementation MainViewController @synthesize virsraksts; @synthesize apraksts; @synthesize paraksts; @synthesize segControl; @synthesize horView; @synthesize nosutitButton; @synthesize pageControl; BOOL isCamera; NSInteger nr; -(NSString *)dataFilePath { NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory=[paths objectAtIndex:0]; return [documentsDirectory stringByAppendingPathComponent:@"data.plist"]; } -(void)applicationWillTerminate:(NSNotification *)notification { NSMutableArray *array=[[NSMutableArray alloc] init]; [array addObject:paraksts.text]; [array writeToFile:[self dataFilePath] atomically:YES]; [array release]; } -(IBAction)textFieldDoneEditing:(id)sender { [sender resignFirstResponder]; } // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"bg.png"]]; horView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"horviewbg.png"]]; horView.delegate = self; NSString *filePath=[self dataFilePath]; if ([[NSFileManager defaultManager] fileExistsAtPath:filePath]) { NSArray *array=[[NSArray alloc] initWithContentsOfFile:filePath]; paraksts.text=[array objectAtIndex:0]; [array release]; } UIApplication *app=[UIApplication sharedApplication]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationWillTerminate:) name:UIApplicationWillTerminateNotification object:app]; bildes = [[NSMutableArray alloc] init]; bildesFileName = [[NSMutableArray alloc] init]; isCamera=NO; [horView setContentSize:CGSizeMake(0, 163)]; UIImage *buttonImageNormal = [UIImage imageNamed:@"whiteButton.png"]; UIImage *stretchableButtonImageNormal = [buttonImageNormal stretchableImageWithLeftCapWidth:12 topCapHeight:0]; [nosutitButton setBackgroundImage:stretchableButtonImageNormal forState:UIControlStateNormal]; UIImage *buttonImagePressed = [UIImage imageNamed:@"blueButton.png"]; UIImage *stretchableButtonImagePressed = [buttonImagePressed stretchableImageWithLeftCapWidth:12 topCapHeight:0]; [nosutitButton setBackgroundImage:stretchableButtonImagePressed forState:UIControlStateHighlighted]; if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) { [segControl setEnabled:NO forSegmentAtIndex:0]; } //deleting images for (NSString *file in [[NSFileManager defaultManager] contentsOfDirectoryAtPath:NSTemporaryDirectory() error:NULL]) { [[NSFileManager defaultManager] removeItemAtPath:[NSString stringWithFormat:@"%@%@", NSTemporaryDirectory(), file] error:NULL]; } [super viewDidLoad]; } - (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. } - (void)viewDidUnload { // Release any retained subviews of the main view. self.horView = nil; //deleting images for (NSString *file in [[NSFileManager defaultManager] contentsOfDirectoryAtPath:NSTemporaryDirectory() error:NULL]) { [[NSFileManager defaultManager] removeItemAtPath:[NSString stringWithFormat:@"%@%@", NSTemporaryDirectory(), file] error:NULL]; } [super viewDidUnload]; } - (void)dealloc { [virsraksts release]; [apraksts release]; [paraksts release]; [bildes release]; [bildesFileName release]; [segControl release]; [pageControl release]; [horView release]; [nosutitButton release]; [super dealloc]; } -(void) showEmailModalView { MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init]; picker.mailComposeDelegate = self; // &amp;lt;- very important step if you want feedbacks on what the user did with your email sheet NSString *subject =[NSString stringWithFormat:@"Mobilais reportieris: %@",virsraksts.text]; [picker setSubject:subject]; // Set up recipients NSArray *toRecipients = [NSArray arrayWithObject:@"test@test.com"]; [picker setToRecipients:toRecipients]; // Attach an image to the email NSString *tempPath = NSTemporaryDirectory(); for (int i=0;i&lt;[bildesFileName count]; i++) { NSString *imagePath = [tempPath stringByAppendingPathComponent:[bildesFileName objectAtIndex:i]]; if ([[NSFileManager defaultManager] fileExistsAtPath:imagePath]) { NSData *myData = [NSData dataWithContentsOfFile:imagePath]; [picker addAttachmentData:myData mimeType:@"image/jpeg" fileName:[bildesFileName objectAtIndex:i]]; } } // Fill out the email body text NSString *emailBody =[NSString stringWithFormat:@"%@&lt;br /&gt;\n\n%@",apraksts.text,paraksts.text]; [picker setMessageBody:emailBody isHTML:YES]; // depends. Mostly YES, unless you want to send it as plain text (boring) picker.navigationBar.barStyle = UIBarStyleBlack; // choose your style, unfortunately, Translucent colors behave quirky. [self presentModalViewController:picker animated:YES]; [picker release]; } - (IBAction)buttonPressed { [self showEmailModalView]; } #pragma mark - #pragma mark MAIL DELEGATE // Dismisses the email composition interface when users tap Cancel or Send. Proceeds to update the message field with the result of the operation. - (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error { // Notifies users about errors associated with the interface switch (result) { case MFMailComposeResultCancelled: break; case MFMailComposeResultSaved: break; case MFMailComposeResultSent: { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"E-pasts" message:@"Veiksmīgi nosūtīts" delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil]; [alert show]; [alert release]; } break; case MFMailComposeResultFailed: break; default: { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"E-pasts" message:@"Neizdevās nosūtīt" delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil]; [alert show]; [alert release]; } break; } [self dismissModalViewControllerAnimated:YES]; } #pragma mark - - (IBAction)segControlClicked:(id)sender { //int clickedSegment = [sender selectedSegment]; UIImagePickerController *photoPicker =[[UIImagePickerController alloc] init]; photoPicker.delegate = self; photoPicker.allowsEditing = NO; //NSLog(@"segmentAction: selected segment = %d", [sender selectedSegmentIndex]); if ([sender selectedSegmentIndex] == 0) { photoPicker.sourceType=UIImagePickerControllerSourceTypeCamera; isCamera=YES; } else { photoPicker.sourceType=UIImagePickerControllerSourceTypeSavedPhotosAlbum;; isCamera=NO; } [self presentModalViewController:photoPicker animated:YES]; [photoPicker release]; } #pragma mark - - (void)imagePickerController:(UIImagePickerController *)photoPicker didFinishPickingMediaWithInfo:(NSDictionary *)info { if ([[info objectForKey:UIImagePickerControllerMediaType] isEqualToString:@"public.image"]) { // you got an image UIImage * img = [info objectForKey:@"UIImagePickerControllerOriginalImage"]; if (isCamera==YES) UIImageWriteToSavedPhotosAlbum(img, nil, nil, nil); NSString *tempPath = NSTemporaryDirectory(); NSString *tempName=[[NSString alloc] initWithFormat:@"temp%d.jpg", [bildes count]]; NSString *imagePath = [tempPath stringByAppendingPathComponent:tempName]; [bildesFileName insertObject:tempName atIndex:[bildesFileName count]]; [tempName release]; NSData* imageData = UIImageJPEGRepresentation(img, 1.0); [imageData writeToFile:imagePath atomically:YES]; [bildes insertObject:imageData atIndex:[bildes count]]; [[photoPicker parentViewController] dismissModalViewControllerAnimated:YES]; if(img!=nil) { horView.frame = CGRectMake(0, 140, 320, 163); [horView setContentSize:CGSizeMake((320*[bildes count]), 163)]; //pievienojam bildi UIImageView *i=[[UIImageView alloc] initWithImage:[UIImage imageWithData:imageData]]; [i setFrame:CGRectMake((320*[bildes count]-320+50),5,220,153)]; //Adjust X,Y,W,H as needed i.contentMode = UIViewContentModeScaleAspectFit; [horView addSubview:i]; [i release]; //pievienojam dzēšanas pogu UIButton *deleteButton = [[UIButton buttonWithType:UIButtonTypeCustom] retain]; [deleteButton setFrame:CGRectMake(320*[bildes count]-50,10, 28, 28)]; [deleteButton setImage:[UIImage imageNamed:@"deletebutton.png"] forState:UIControlStateNormal]; [deleteButton addTarget:self action:@selector(deleteImage:) forControlEvents:UIControlEventTouchUpInside]; [deleteButton setTag:[bildes count]-1]; [horView addSubview:deleteButton]; [deleteButton release]; //pabīdam bildi redzamajā rāmī [self performSelector:@selector(moveHorView) withObject:nil afterDelay:.5]; pageControl.numberOfPages = [bildes count]; pageControl.currentPage = [bildes count]; } //[imageData release]; } else { // movie! [[photoPicker parentViewController] dismissModalViewControllerAnimated:YES]; } } -(void) deleteImage:(UIButton *)sender{ //NSLog(@"yyy%d",sender.tag); nr=sender.tag; UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Delete image?" delegate:self cancelButtonTitle:@"No" destructiveButtonTitle:@"Yep" otherButtonTitles:nil]; [actionSheet showInView:self.view]; [actionSheet release]; } -(void) moveHorView{ [horView scrollRectToVisible:CGRectMake((320*[bildes count]-320),0,320,163) animated:YES]; } - (void)imagePickerControllerDidCancel:(UIImagePickerController *)photoPicker { [photoPicker dismissModalViewControllerAnimated:YES]; } - (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex { if (buttonIndex != [actionSheet cancelButtonIndex]) { //deleting images from horView UIView* subview; while ((subview = [[horView subviews] lastObject]) != nil) [subview removeFromSuperview]; //deleting image from tmp NSString *imagePath = [NSTemporaryDirectory() stringByAppendingPathComponent:[bildesFileName objectAtIndex:nr]]; if ([[NSFileManager defaultManager] fileExistsAtPath:imagePath]) { [[NSFileManager defaultManager] removeItemAtPath:imagePath error:NULL]; } //deleting image from arrays [bildes removeObjectAtIndex:nr]; [bildesFileName removeObjectAtIndex:nr]; //showing all images for (int i=0;i&lt;[bildesFileName count]; i++) { //adding image UIImageView *iw=[[UIImageView alloc] initWithImage:[UIImage imageWithData:[bildes objectAtIndex:i]]]; [iw setFrame:CGRectMake((320*i)+50,5,220,153)]; //Adjust X,Y,W,H as needed iw.contentMode = UIViewContentModeScaleAspectFit; [horView addSubview:iw]; [iw release]; //adding delete button UIButton *deleteButton = [[UIButton buttonWithType:UIButtonTypeCustom] retain]; [deleteButton setFrame:CGRectMake(320*i+320-50,10, 28, 28)]; [deleteButton setImage:[UIImage imageNamed:@"deletebutton.png"] forState:UIControlStateNormal]; [deleteButton addTarget:self action:@selector(deleteImage:) forControlEvents:UIControlEventTouchUpInside]; [deleteButton setTag:i]; [horView addSubview:deleteButton]; [deleteButton release]; } [horView setContentSize:CGSizeMake((320*[bildes count]), 163)]; [horView scrollRectToVisible:CGRectMake((320 * nr),0,320,163) animated:YES]; pageControl.numberOfPages = [bildes count]; pageControl.currentPage = [bildes count]; } } #pragma mark - #pragma mark UIScrollViewDelegate methods -(void)scrollViewDidScroll:(UIScrollView *)sv { //showing pageControl.currentPage pageControl.currentPage = floor((sv.contentOffset.x - 160) / 320) + 1; } @end </code></pre> <p>I'm new to iOS developing, so maybe there is some memory leak. Don't have an idea whats wrong and how to locate problem :/ I tried to comment out some functions, but nothing really helped.</p>
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      1. POApp crashes with reason: Collection <__NSArrayM: 0x7071700> was mutated while being enumerated
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      1. VTUpMod
    1. COCan you please post the code of selector (method), that is being called on segment click?
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      1. POApp crashes with reason: Collection <__NSArrayM: 0x7071700> was mutated while being enumerated
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    2. COCheck for this line in my already posted code: - (IBAction)segControlClicked:(id)sender It opens imagePicker, so user can select some photos from gallery
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      1. POApp crashes with reason: Collection <__NSArrayM: 0x7071700> was mutated while being enumerated
      1. USDeniss Fedotovs
    3. COMemory leaks do not typically cause crashes, and they certainly don't cause crashes that talk about enumerating arrays
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      1. POApp crashes with reason: Collection <__NSArrayM: 0x7071700> was mutated while being enumerated
      1. USCatfish_Man
 

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