searchDisplayController被释放，崩溃

Question

有一次这种情况很好，很明显，事情发生了变化。当我离开加载searchDisplayController的viewController时，我的应用程序正在向解除分配的实例发送消息。堆栈是我相信它是searchDisplayController的原因：

查看我的代码，我不知道它取消分配的位置。我很欣赏任何想法。感谢。

修改： 我应该补充一点，如果我注释掉我的viewDidDisappear方法，崩溃就会停止。

-(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];
}

以下是相关位：

@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

经过大量挖掘，与其他人一样，我发现这篇文章解决了这个问题。

UISearchDisplayController autorelease crash