UITableView - 未调用cellForRowAtIndexPath [英] UITableView - cellForRowAtIndexPath Is Not Being Called

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问题描述

我知道标题已经足够说明了,我知道这个问题已被问过几次,但是在这种情况下我无法使它成功。

I know the title is illustrating enough, and I KNOW that this question has been ask a couple of times, but in this case I couldn't manage to make it work.

我已经使用过UITableViews并且它们都运行良好,但这一次,我甚至用其他工作副本检查了我的代码,但它无法正常工作。

I already have worked with UITableViews and they all have been working fine, but this time, I even checked my code with other working copies, but it is not working.

所以,这是故事:

我在故事板中的一个视图控制器中有一个表视图,其中包含一个名为的自定义类ContactViewController ,它使用名为的插座连接到代码favContactsTable

I have a table view in one of my view controller's in storyboard with a custom class named ContactViewController, and it is connected to code using an outlet named favContactsTable

以下是相关部分来自.h和.m:

Here are related parts from its .h and .m :

ContactViewController.h

@interface ContactViewController : UIViewController <UITableViewDataSource>

// Other Stuff
   .
   .

@property (retain, nonatomic) IBOutlet UITableView *favContactsTable;

   .
   .
// Other Stuff

@end

这里是已实现的功能 UITableViewDataSource 协议:

And here is implemented functions of UITableViewDataSource protocol :

ContactViewController.m

// Rest of the code
.
.
.
.
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return 5;
}

- (UITableViewCell *)tableView:(UITableView *)tv cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSLog(@"TEST OUTPUT");

    //Test
    int a = 1; // Breakpoint
    a++;

    cell = [self.favContactsTable dequeueReusableCellWithIdentifier:@"FavContactCell"];
    if (cell == nil)
    {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"FavContactCell"];
    }
    cell.textLabel.text = @"FAV";
    .
    .
    .
}

我的视图控制器中有另一个按钮可重新加载此表的数据,但是当我按下它时没有触发断点并且没有打印日志,没有任何函数被调用。以下是该按钮的代码:

I have another button in my view controller that reloads data for this table, but when I press it none of the breakpoints is triggered and no log is printed, none of the functions are being called. Here's the code for that button :

- (IBAction)refreshTables:(id)sender
{
    [self.favContactsTable reloadData];
}

我检查了几乎所有具有动态表视图的项目的部分这个,我无法弄清楚出了什么问题。

I checked almost every part with my other projects that has a dynamic table view like this, and I can't figure out what's wrong.

请不要提及其他类似的重复问题,因为我已经把它们全部读过(或者至少,大多数他们确定我不会为每个部分返回0行,我确定 favContactsTable 不是 nil 当我向它发送 reloadData 消息时......等等!

Please do not mention other similar questions as duplicates, because I already have read them all ( or at least, most of them ) and I'm sure I'm not returning 0 rows for each section, and I'm sure favContactsTable is not nil when I send reloadData message to it and ... etc !

任何可能有帮助的想法非常感谢。

Any idea that may help is really appreciated.

推荐答案

@interface myViewController : UIViewController <UITableViewDelegate, UITableViewDataSource> {


}

set delegate

set delegate

拖动到你的viewcontroller图标

drag to your viewcontroller icon

检查代码中的单元格标识符是否相同

check your cell identifier as same in your code also

- (UITableViewCell *)tableView:(UITableView *)tableView
         cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"SimpleTableCell"];

    if (cell == nil)
    {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle
                                      reuseIdentifier:@"SimpleTableCell"];

    }
return cell;

}

这篇关于UITableView - 未调用cellForRowAtIndexPath的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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