你可以帮我找一下点击分段控件后我的应用程序崩溃的原因吗？不是总的来说，但经过一些点击后通常会这样做。
错误讯息：
*** Terminating app due to uncaught exception 'NSGenericException', reason: '*** Collection <__NSArrayM: 0x7071700> was mutated while being enumerated.(
"<PLImageTableSegment: 0x7051d30>",
"<PLImageTableSegment: 0x7051d30>",
"<PLImageTableSegment: 0x7051d30>",
"<PLImageTableSegment: 0x7051d30>",
"<PLImageTableSegment: 0x7051d30>",
"<PLImageTableSegment: 0x7051d30>",
"<PLImageTableSegment: 0x7051d30>",
"<PLImageTableSegment: 0x7051d30>",
"<PLImageTableSegment: 0x7051d30>",
"<PLImageTableSegment: 0x7051d30>",
"<PLImageTableSegment: 0x7051d30>",
"<PLImageTableSegment: 0x7051d30>"
)'
*** 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'
头文件：
#import <UIKit/UIKit.h>
#import <MessageUI/MessageUI.h>
@interface MainViewController : UIViewController <MFMailComposeViewControllerDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate,UIActionSheetDelegate, UIScrollViewDelegate>{
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
实施档案：
#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; // <- 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<[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:@"%@<br />\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<[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
我是iOS开发的新手，所以可能有一些内存泄漏。不知道什么是错的以及如何找到问题：/我试图评论一些功能，但没有什么真正帮助。
答案 0 :(得分：1)
看起来问题出在UIImagePickerController上，并且仅在模拟器中（详见此处详细说明：http://blog.airsource.co.uk/index.php/2008/11/12/memory-usage-in-uiimagepickercontroller/）。在真实的设备上，一切都很好。
答案 1 :(得分：0)
已解决
我在coredata对象枚举中遇到同样的问题。
不要更改依赖于运行循环的ARRAY的子对象
喜欢==＆gt;＆gt;
如果我在循环中更改/修改对象，则会出现此错误。
for (LoadList *objLL in ArrLoadList) { // here Enumaration is Going on
// here I removed objects in ArrLoadList and reassign the ArrLoadList ..
// it will give me this error
// So Don't change the Main Array object
}
答案 2 :(得分：-1)
我认为问题出在这些代码行中
for (NSString *file in [[NSFileManager defaultManager] contentsOfDirectoryAtPath:NSTemporaryDirectory() error:NULL])
{
[[NSFileManager defaultManager] removeItemAtPath:[NSString stringWithFormat:@"%@%@", NSTemporaryDirectory(), file] error:NULL];
}
你在两个方法didLoad和didUnload中使用它。 你得到的原因是因为你正在更新以下数组的内容
[[NSFileManager defaultManager] contentsOfDirectoryAtPath:NSTemporaryDirectory() error:NULL]
当你进行彻底的枚举器课程时，你会明白“在使用枚举器时不更新内容”...... 因此，要克服这个问题，只需按照您使用此代码的所有地方进行操作....
NSArray* temp = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:NSTemporaryDirectory() error:NULL];
for (NSString *file in temp)
{
[[NSFileManager defaultManager] removeItemAtPath:[NSString stringWithFormat:@"%@%@", NSTemporaryDirectory(), file] error:NULL];
}
我希望这可以解决你的问题...