NSArray给出NSZombie错误

Question

我试图将单个数组对象（即多个值的nsdictionary）传递回我的主视图。

基本上，当我设置视图时，我将一些xml解析为字典数组。然后，我使用NSdictionary内部的值之一来设置表格视图，该值还用于设置字母滚动条和节标题。（这是通过我创建的方法完成的）

在该方法的结尾，我调用[self.tableView reloadData]; 每件事都完美地加载，一切都很好显示。

现在，我正在尝试设置它，以便在选择一个单元格时，我检查cell.textlabel内的值并将其用作谓词，以便一旦找到我想要的对应条目后就对我的词典数组进行检查将我创建的代表将该字典传递到主视图。

但是我收到一个错误，我认为可能是由于我的reloadData ..但不确定。这就是我的谓词。

NSPredicate *pred = [NSPredicate predicateWithFormat:@"%K like %@",@"MANUFACTURER",cell.textLabel.text];
            NSArray *filter = [myDataArray filteredArrayUsingPredicate:pred]; //error happens here
            //check to see if the value is the correct one
            NSLog(@"My Filtered array = %@", filter);
            //once problem has been found set up the delegate here.

这是我收到的错误消息。

2011-10-31 10:43:57.333 code[5812:207] *** -[__NSArrayM filteredArrayUsingPredicate:]: message sent to deallocated instance 0x6874210

如下所示，在NSXMLParser委托中创建myDataArray。

//。H

NSMutableArray *myDataArray;
}
@property (nonatomic, retain) NSMutableArray *myDataArray;

//.m

#pragma mark - Parsing lifecycle

- (void)startTheParsingProcess:(NSData *)parserData
{

    //myDataArray = [NSMutableArray arrayWithCapacity:8]; // not even sure if this is needed as its declared later on.

    NSXMLParser *parser = [[NSXMLParser alloc] initWithData:parserData]; //parserData passed to NSXMLParser delegate which starts the parsing process 

    [parser setDelegate:self];
    [parser parse]; // starts the event-driven parsing operation.
    [parser release];
}

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
    if([elementName isEqualToString:@"Row"])
    {
        manufactureMutableDictionary = [[NSMutableDictionary alloc] initWithDictionary:attributeDict];
    }
    if([elementName isEqualToString:@"Rows"])
    {
        myDataArray = [NSMutableArray arrayWithCapacity:8];
    }
} 

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
    if([elementName isEqualToString:@"Row"])
    {
        [myDataArray addObject:manufactureMutableDictionary];
    }
    [manufactureMutableDictionary release];
    manufactureMutableDictionary = nil;
}

任何帮助将不胜感激，您还认为我将以正确的方式传递字典的所有值吗？

Answer 1

您正在使用autoreleased数组

myDataArray = [NSMutableArray arrayWithCapacity:8];

您已经设置了属性，因此请使用它们，例如

self.myDataArray = [NSMutableArray arrayWithCapacity:8];

甚至更好

NSMutableArray *tmpMyDataArray = [[NSMutableArray alloc] initWithCapacity:8];
self.myDataArray = tmpMyDataArray; 
[tmpMyDataArray release]; tmpMyDataArray = nil;