如何在加载UITableViewCell时设置UIActivityIndi​​catorView [英] How to set an UIActivityIndicatorView when loading a UITableViewCell

问题描述

我有两个 UITableViewController s，A和B.当我点击表A中的一个单元格时，我将使用 UINavigationController 推送表视图控制器B.但B的数据是从Internet下载的，需要几秒钟。所以我想在加载B时添加 UIActivityIndi​​catorView 。我怎样才能实现这个目标？

I have two UITableViewControllers, A and B. When I tap one cell in table A, I will use UINavigationController to push table view controller B. But the data of B is downloaded from Internet, which takes several seconds. So I want to add a UIActivityIndicatorView when loading B. How can I achieve this?

推荐答案

您可以将 UIActivityIndi​​catorView 添加为单元格的 accessoryView 。

You can add UIActivityIndicatorView as cell's accessoryView.

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    UIActivityIndicatorView *spinner = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
    spinner.frame = CGRectMake(0, 0, 24, 24);
    UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
    cell.accessoryView = spinner;
    [spinner startAnimating];
    [spinner release];
}

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