searchDisplayController被释放，崩溃

Question

有一次，这工作得很好，很明显，事情已经改变。当我离开装载searchDisplayController的viewController时，我的应用程序正在向已释放的实例发送消息。堆栈是为什么我相信这是searchDisplayController：

看着我的代码，我不知道它在哪里得到释放。我会很感激任何想法。谢谢。

编辑： 我应该补充说，如果我注释掉我的viewDidDisappear方法，崩溃停止。

-(void)viewDidDisappear:(BOOL)animated { 
     // save the state of the search UI so that it can be restored if the view is re-created 
    self.searchWasActive = [self.searchDisplayController isActive]; 
    self.savedSearchTerm = [self.searchDisplayController.searchBar text]; 
    self.savedScopeButtonIndex = [self.searchDisplayController.searchBar selectedScopeButtonIndex]; 
} 

下面是相关位：

@interface ShowAttributesViewController : UIViewController <UITableViewDataSource, UITableViewDelegate, UISearchDisplayDelegate, UISearchBarDelegate> 
{ 
    IBOutlet UITableView *attributesTableView; 
    NSString  *savedSearchTerm; 
    NSInteger savedScopeButtonIndex; 
    BOOL   searchWasActive; 
} 
@property (nonatomic, retain) UITableView *attributesTableView; 
@property (nonatomic, retain) NSMutableArray *filteredattributesArray; 
@property (nonatomic, copy) NSString *savedSearchTerm; 
@property (nonatomic) NSInteger savedScopeButtonIndex; 
@property (nonatomic) BOOL searchWasActive; 



- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 

    self.filteredattributesArray = [NSMutableArray arrayWithCapacity:[[[SharedAppData sharedStore] attributesArray] count]]; 

    if (self.savedSearchTerm) 
    { 
     [self.searchDisplayController setActive:self.searchWasActive]; 
     [self.searchDisplayController.searchBar setSelectedScopeButtonIndex:self.savedScopeButtonIndex]; 
     [self.searchDisplayController.searchBar setText:savedSearchTerm]; 

     self.savedSearchTerm = nil; 
    } 
} 

-(void)viewDidDisappear:(BOOL)animated { 
    self.searchWasActive = [self.searchDisplayController isActive]; 
    self.savedSearchTerm = [self.searchDisplayController.searchBar text]; 
    self.savedScopeButtonIndex = [self.searchDisplayController.searchBar selectedScopeButtonIndex]; 
} 

-(void)viewDidUnload { 

    self.filteredattributesArray = nil; 
} 

- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString { 
    [self filterContentForSearchText:searchString]; 
    return YES; 
} 

- (void)searchDisplayController:(UISearchDisplayController *)controller willUnloadSearchResultsTableView:(UITableView *)tableView { 

    [attributesTableView reloadData]; 
} 

Answer 1

大量挖掘后，与其他人一样，我发现这个职位能解决问题。

UISearchDisplayController autorelease crash