如何显示加载的表视图的 UIActivityIndicatorView

发布于 2024-12-13 12:37:03 字数 603 浏览 0 评论 0原文

一个相当短的问题，如何在视图加载后 0.5 秒内加载 UIActivityIndicatorView？

我环顾四周，但大多数教程都使用 webview，其中创建 if 语句，其中 (webview.loading) 用于定义动画的长度等。所以我只是想知道如何在视图加载 0.5 秒时执行此操作。

目前，我有一种方法可以将先前选择的单元格居中，我希望指示器能够持续到完成为止。

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
[self performSelector:@selector(scrollToRowAtIndexPath) withObject:nil afterDelay:1.0];
}

- (void)scrollToRowAtIndexPath
{    
    [self.tableView reloadData];
    [self.tableView scrollToRowAtIndexPath:oldCheckedIndexPath atScrollPosition:UITableViewScrollPositionMiddle animated:NO];
}

原文

A fairly short question, How can I load a UIActivityIndicatorView for say 0.5 seconds from when the view loads?

I have had a look around but most tutorials are using the webview where an if statment is created where (webview.loading) is used to define the length of the animation etc..
so i am just woundering how to do this when ever the view loads for .5 second.

Currently I have a method that centers the previously selected cell which I would like the indicator to last untill this is done.

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
[self performSelector:@selector(scrollToRowAtIndexPath) withObject:nil afterDelay:1.0];
}

- (void)scrollToRowAtIndexPath
{    
    [self.tableView reloadData];
    [self.tableView scrollToRowAtIndexPath:oldCheckedIndexPath atScrollPosition:UITableViewScrollPositionMiddle animated:NO];
}

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

国际总奸 2024-12-20 12:37:03

也许有些这样的帮助：

-(void)viewDidLoad
{
    [super viewDidLoad];

    //... all your previous charge.

    UIActivityIndicatorView *activity = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];

    activity.hidesWhenStopped = YES;

    activity.autoresizingMask = UIViewAutoresizingFlexibleBottomMargin |
        UIViewAutoresizingFlexibleHeight |
        UIViewAutoresizingFlexibleLeftMargin |
        UIViewAutoresizingFlexibleRightMargin |
        UIViewAutoresizingFlexibleTopMargin |
        UIViewAutoresizingFlexibleWidth;

    [yourTable addSubview:activity];

    [activity startAnimating];

    [activity performSelector:@selector(stopAnimating) withObject:nil afterDelay:0.5];

    [activity release];
}

Maybe some like that helps:

-(void)viewDidLoad
{
    [super viewDidLoad];

    //... all your previous charge.

    UIActivityIndicatorView *activity = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];

    activity.hidesWhenStopped = YES;

    activity.autoresizingMask = UIViewAutoresizingFlexibleBottomMargin |
        UIViewAutoresizingFlexibleHeight |
        UIViewAutoresizingFlexibleLeftMargin |
        UIViewAutoresizingFlexibleRightMargin |
        UIViewAutoresizingFlexibleTopMargin |
        UIViewAutoresizingFlexibleWidth;

    [yourTable addSubview:activity];

    [activity startAnimating];

    [activity performSelector:@selector(stopAnimating) withObject:nil afterDelay:0.5];

    [activity release];
}

回复收藏 0 原文

~没有更多了~