Iphone cellForRowAtIndexPath调用太晚

每当我从网络上获得的数据可用时，我都会尝试重新加载一个表。这就是我所拥有的：

SearchDataViewController:

- (void)parseDataXML {
    parsingDelegate = [[XMLParsingDelegate alloc] init];    
    parsingDelegate.searchDataController = self;
    // CONTAINS THE TABLE THAT NEEDS RE-LOADING;    
    ImplementedSearchViewController *searchController = [[ImplementedSearchViewController alloc] initWithNibName:@"ImplementedSearchView" bundle:nil];

    ProjectAppDelegate *delegate = [[UIApplication sharedApplication] delegate];
    UINavigationController *nav = (UINavigationController *)[delegate.splitViewController.viewControllers objectAtIndex: 0];
    NSArray *viewControllers = [[NSArray alloc] initWithObjects:nav, searchController, nil];
    self.splitViewController.viewControllers = viewControllers;
    [viewControllers release];
    // PASS A REFERENCE TO THE PARSING DELEGATE SO THAT IT CAN CALL reloadData on the table     
    parsingDelegate.searchViewController = searchController;

    [searchController release];

    // Build the url request used to fetch data
    ... 
    NSURLRequest *dataURLRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:dataURL]];
        parsingDelegate.feedConnection = [[[NSURLConnection alloc] initWithRequest:dataURLRequest delegate:parsingDelegate] autorelease];

}

ImplementedSearchViewController:

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    NSLog(@"count = %d", [keys count]);
    // keys IS A NSMutableArray
    return [self.keys count];    
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    ...
    cell.textLabel.text = [keys objectAtIndex:row];
    ...
}

XMLParsingDelgate:

-(void) updateSearchTable:(NSArray *)array {
    ...
    [self.currentParseBatch addObject:(NSString *)[array objectAtIndex:1]];
    // RELOAD TABLE
    [self.searchViewController.table reloadData];
}
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName
  namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName
    attributes:(NSDictionary *)attributeDict {

    if ([elementName isEqualToString:@"..."]) {
        self.currentParseBatch = [NSMutableArray array];
        searchViewController.keys = self.currentParseBatch;
                ...
    }
        ...
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName
  namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {
    if ([elementName isEqualToString:@"..."]) {
                ...
        [self performSelectorOnMainThread:@selector(updateSearchTable:) withObject:array waitUntilDone:NO];
        }
        ...     
}

我的问题是，当我调试时，调用在reloadData和numberOfRowsInSection之间进行，直到keys数组中填充了最后一个数据，此时调用cellForRowAtIndexPath：

reloadData -> numberOfRowsInSection reloadData -> numberOfRowsInSection ... reloadData -> numberOfRowsInSection -> cellForRowAtIndexPath 重新加载数据->行数部分 重新加载数据->行数部分 ... 重新加载数据->行数部分->单元格行数索引路径 我想要的是为我发送的每个元素逐个更新表：

reloadData -> numberOfRowsInSection -> cellForRowAtIndexPath reloadData -> numberOfRowsInSection -> cellForRowAtIndexPath ... reloadData -> numberOfRowsInSection -> cellForRowAtIndexPath 重新加载数据->行数部分->单元格行数索引路径 重新加载数据->行数部分->单元格行数索引路径 ... 重新加载数据->行数部分->单元格行数索引路径 你知道为什么会有这种行为吗

---

谢谢大家!

您是在问如何加载整个项目的部分表视图安装吗？如果是这样的话，那么您可以使用relaodRowsAtINdexPath:或reloadSectionsAtIndexPath来实现此目的，这里有一个参考…

从

[self-performSelectorOnMainThread:@selector（updateSearchTable:）更改为对象：数组waitUntilDone:NO]

到

[自执行选择器onmainthread:@selector（updateSearchTable:）with object:array waitUntilDone:YES]解决了我的问题
 问题在于使用线程，而不是“只是”打开或关闭标志。在不同的线程上执行选择器，它就会开始工作。也可以使用performSelectorOnBackground
否。我的问题是重新加载数据只调用numberOfRowsInSection，而不调用cellForRowAtIndexPath。当kjeys数组被填充时，最后一次调用numberOfRowsInSection后，会调用cellForRowAtIndexPath。我不确定，重新加载数据会重新加载整个tableview，因此numberOfRows将首先被调用，然后它会为所有行调用CellForRowAtexPath…这就是问题所在，调用numberOfRowsInSection后不会调用cellForRowatIndexPath，它仅在用最后一个元素填充my keys数组后才会被调用。我已经更新了我原来帖子的最后一部分，以便更好地解释情况。