UITableview有EXT_BAD_ACCESS然后向下滚动

Question

我在.h文件中有以下代码

#import <UIKit/UIKit.h> 


@interface MessDisViewController : UIViewController { 
IBOutlet UITableView * DisTable; 
NSMutableArray *massages; 
UIActivityIndicatorView * activityIndicator; 
CGSize cellSize; 
NSXMLParser * friendsParser; 
NSMutableDictionary * listOfFriends; 
NSString * currentElement; 
NSMutableString * currentID, * currentFname; 
} 
-(void) parseXMLFileAtURL:(NSString *) myUrl; 
-(UITableViewCell *) getCellContentView:(NSString *)cellIdentifier; 
@end 

在.m文件中我有

#import "MessDisViewController.h" 
#import "MessageDetailView.h" 

@implementation MessDisViewController 


- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { 
return 1; 
} 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { 
return [massages count]; 
} 

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 


static NSString *CellIdentifier = @"Cell"; 

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
if (cell == nil) 
    cell = [self getCellContentView:CellIdentifier]; 

UILabel *lblTemp1 = (UILabel *)[cell viewWithTag:1]; 
UILabel *lblTemp2 = (UILabel *)[cell viewWithTag:2]; 

int storyIndex = [indexPath indexAtPosition: [indexPath length] - 1]; 

NSString *cellValue = [massages objectAtIndex:indexPath.row]; 
NSString *title = [[[massages objectAtIndex: storyIndex] objectForKey: @"theme"] stringByReplacingOccurrencesOfString:@"*" withString:@" "]; 
NSLog(@"%@",title); 
lblTemp1.text = title; 
lblTemp2.text= [NSString stringWithFormat:@"%@, %@",[[massages objectAtIndex: storyIndex] objectForKey: @"login"],[[massages objectAtIndex: storyIndex] objectForKey: @"activate_date"]]; 
[cellValue release]; 
return cell; 

} 

- (UITableViewCell *) getCellContentView:(NSString *)cellIdentifier { 

CGRect CellFrame = CGRectMake(0, 0, 300, 60); 
CGRect Label1Frame = CGRectMake(10, 10, 290, 25); 
CGRect Label2Frame = CGRectMake(10, 33, 290, 25); 
UILabel *lblTemp; 

UITableViewCell *cell = [[[UITableViewCell alloc] initWithFrame:CellFrame reuseIdentifier:cellIdentifier] autorelease]; 

//Initialize Label with tag 1. 
lblTemp = [[UILabel alloc] initWithFrame:Label1Frame]; 
lblTemp.tag = 1; 
[cell.contentView addSubview:lblTemp]; 
[lblTemp release]; 

//Initialize Label with tag 2. 
lblTemp = [[UILabel alloc] initWithFrame:Label2Frame]; 
lblTemp.tag = 2; 
lblTemp.font = [UIFont boldSystemFontOfSize:12]; 
lblTemp.textColor = [UIColor lightGrayColor]; 
[cell.contentView addSubview:lblTemp]; 
[lblTemp release]; 

return cell; 
} 

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { 

return 60; 
} 
- (void) parseXMLFileAtURL:(NSString *) URL{  
massages = [[NSMutableArray alloc] init]; 

NSURL *xmlURL = [NSURL URLWithString:URL]; 
friendsParser = [[NSXMLParser alloc] initWithContentsOfURL:xmlURL]; 
[friendsParser setDelegate:self]; 
[friendsParser setShouldProcessNamespaces:NO]; 
[friendsParser setShouldReportNamespacePrefixes:NO]; 
[friendsParser setShouldResolveExternalEntities:NO]; 
[friendsParser parse]; 

} 

- (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError { 
NSString * errorString = [NSString stringWithFormat:@"Cannot connect to DataBase (Error code %i)", [parseError code]]; 
NSLog(@"error parsing XML: %@", errorString); 

UIAlertView * errorAlert = [[UIAlertView alloc] initWithTitle:@"Error loading content" message:errorString delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; 
[errorAlert show]; 
} 

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{    
if ([elementName isEqualToString:@"Message"]){ 
    listOfFriends = [[NSMutableDictionary alloc] init]; 
    [listOfFriends setObject:[attributeDict objectForKey:@"theme"] forKey:@"theme"]; 
    [listOfFriends setObject:[attributeDict objectForKey:@"login"] forKey:@"login"]; 
    [listOfFriends setObject:[attributeDict objectForKey:@"activate_date"] forKey:@"activate_date"]; 
    [listOfFriends setObject:[attributeDict objectForKey:@"message_id"] forKey:@"message_id"]; 
    [massages addObject:[listOfFriends copy]]; 
} 
} 

- (void)viewDidAppear:(BOOL)animated { 
[super viewDidAppear:animated]; 
NSString *request=[NSString stringWithFormat: @"http://blablabla"]; 
[self parseXMLFileAtURL:request]; 

} 
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{ 
int storyIndex = [indexPath indexAtPosition: [indexPath length] - 1]; 
NSString *mesid = [[NSString alloc] initWithString:[[massages objectAtIndex: storyIndex] objectForKey: @"message_id"]]; 
NSLog(@"%@",mesid); 
MessageDetailView *mesdet = [[MessageDetailView alloc]initWithNibName:nil bundle:nil]; 
mesdet.modalTransitionStyle=UIModalTransitionStyleCrossDissolve; 
mesdet.mesid=mesid; 
[self presentModalViewController:mesdet animated:YES]; 

[mesdet release]; 
mesdet = nil; 
} 

- (void)parserDidEndDocument:(NSXMLParser *)parser { 

[activityIndicator stopAnimating]; 
[activityIndicator removeFromSuperview]; 

NSLog(@"all done!"); 
NSLog(@"stories array has %d items", [massages count]); 
[DisTable reloadData]; 
} 
- (void)didReceiveMemoryWarning { 
[super didReceiveMemoryWarning]; // Releases the view if it doesn't have a superview 
// Release anything that's not essential, such as cached data 
} 



- (void)dealloc { 


[friendsParser release]; 
[listOfFriends release];  
[super dealloc]; 
} 

@end 

当我在模拟器上向下滚动我的tableview它有EXT_BAD_ACCESS它为什么会发生以及如何解决这个问题

Answer 1

启用NSZombie和测试是什么创造了错误第一

Double-click an executable in the Executables group of your Xcode project. 
Click the Arguments tab. 
In the "Variables to be set in the environment:" section, make a variable called "NSZombieEnabled" and set its value to "YES". 

好运

Answer 2

修复此问题

int storyIndex = [indexPath indexAtPosition: [indexPath length] - 1]; 


NSString *title = [[[massages objectAtIndex: storyIndex] objectForKey: @"theme"] stringByReplacingOccurrencesOfString:@"*" withString:@" "]; 
NSLog(@"%@",title); 
lblTemp1.text = title; 
lblTemp2.text= [NSString stringWithFormat:@"%@, %@",[[massages objectAtIndex: storyIndex] objectForKey: @"login"],[[massages objectAtIndex: storyIndex] objectForKey: @"activate_date"]]; 
return cell;