NSIndexPath：发送到解除分配的实例的消息 [英] NSIndexPath: message sent to deallocated instance

问题描述

您可以提供的任何帮助将不胜感激。

Any help you can offer would be appreciated.

我有一个包含tableView，detailView，flipView和moreDetail View的应用程序。它很好地通过过渡直到第26个元素。当我点击导航到flip和moreDetailView的按钮时，应用程序崩溃了。

I have a app that has a tableView, detailView, flipView, and moreDetail View. It is fine moving through the transitions until the 26th element. The app crashes when I hit buttons that navigate to the flip and moreDetailView.

我收到错误消息： [NSIndexPath row]消息发送到解除分配的实例。

I am given the error Msg: [NSIndexPath row] message sent to deallocated instance.

我想我可能会多次调用indexPath，但为什么一切都运行良好直到第25个元素然后停止工作？ NSIndexPath是如何解除分配的？我从来没有解除分配。

I think I may be calling the indexPath too many times, but why does everything work well up until the 25th element and then stop working? How did the NSIndexPath get deallocated? I never deallocated it.

如果您知道，请帮忙。谢谢!!!

If you know, please help. Thank you!!!

Xcode表示问题在于：

Xcode says the problem is here:

@implementation produceView aka *detailView*

- (IBAction)showInfo {

        FlippedProduceView *fView = [[FlippedProduceView alloc]initWithIndexPath:index];
    fView.flipDelegate = self;


    fView.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
    [self presentModalViewController:fView animated:YES];
         [fView release]; 

}


 - (IBAction) buttonPushed:(id)sender

{

    picView *pictureView = [[picView alloc]initWithIndexPath:index];


    pictureView.picDelegate = self;
    pictureView.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;     

    [self presentModalViewController:pictureView animated:YES];
        [pictureView release];
}

-(id)initWithIndexPath:(NSIndexPath *)myIndexPath {   
if (self == [super init]) {
            path = myIndexPath;

    }
    return self;

}

@implementation picView aka *moreDetailView*

- (void)viewDidLoad {
    RipeGuideAppDelegate *AppDelegate = (RipeGuideAppDelegate *)[[UIApplication sharedApplication] delegate];
    self.picViewArray = AppDelegate.arrayProduceInfo;

    NSMutableDictionary *dictionary = [picViewArray objectAtIndex:path.row];
}

@implementation FlippedProduceView aka *flipView*


- (id)initWithIndexPath:(NSIndexPath *)myIndexPath {
    if (self == [super init]) {
        indexes = myIndexPath;
    }
    return self;
}

- (void)viewDidLoad {
    RipeGuideAppDelegate *AppDelegate = (RipeGuideAppDelegate *)[[UIApplication sharedApplication] delegate];
    self.flipViewArray = AppDelegate.arrayProduceInfo;

    NSMutableDictionary *dictionary = [flipViewArray objectAtIndex:indexes.row];
}

推荐答案

你应该使用属性（ @property（retain）NSIndexPath * path; ）而不是实例变量，所以当你执行 self.path = myIndexPath 然后它会提高保留计数，以便在自动释放IndexPath时不会释放它。

You should use properties (@property (retain) NSIndexPath *path;) instead of instance variables, so then when you do self.path = myIndexPath then it raises the retain count so it won't be deallocated when IndexPath is autoreleased.

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