在不重新加载整个表格视图的情况下更改 UITableView 的部分页眉/页脚标题 [英] Changing UITableView's section header/footer title without reloading the whole table view

问题描述

有没有办法在不调用的情况下重新加载表格视图的部分页眉/页脚[tableView reloadData];?

Is there any way to reload the section header/footer of a table view without calling [tableView reloadData];?

事实上，我想在其部分页脚中显示表格视图部分中的单元格数量.表视图是可编辑的，我使用

In fact, I want to show the number of cells in a table view's section in its section footer. The table view is editable and I delete or insert rows using

– insertRowsAtIndexPaths:withRowAnimation:
– deleteRowsAtIndexPaths:withRowAnimation:

似乎这些方法不会更新节页脚.奇怪的是，当我调用这些方法时，表视图数据源方法

It seems that these methods do not update the section footer. Strangely, when I call these methods the table view data-source method

- (NSString *)tableView:(UITableView *)table titleForFooterInSection:(NSInteger)section 

被调用(两次！)但它不会用新值更新表视图！！

is called (twice!) but it does not update the table view with the new values!!

有人知道如何解决这个问题吗?

Anyone has any idea how to fix this problem?

推荐答案

我设法以一种间接的方式做到了:我创建了一个 UILabel 并将其设置为节页眉/页脚.

I managed to do it in an indirect way: I created a UILabel and set it as section header/footer.

- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section {
    // update sectionFooterView.text    
    return sectionFooterView;
}

- (void)viewDidLoad {
    // create sectionFooterView in Interface Builder, change the frame here
    // use Font-size:15 , BG-Color: clearColor , text-Color: RGB=(97,105,118) 
    // and Text-alignment:Center to look like table view's original footer
    sectionFooterView.frame = CGRectMake(0, 10, 320, 12);
}

有谁知道不设置自定义页脚视图的方法吗?

Does anyone know a way to do this without setting a custom footer view?

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