iphone - UIActivityIndi​​catorView 用于为 URL 加载的 UIImage

Question

我有一个从 URL 加载的 UIImage，我想在加载图像时显示一个 UIActivityIndi​​catorView 动画。有人可以帮助我吗？

谢谢大家。

Answer 1

所以你想在访问服务器时使用UIActivityIndi​​cator。

首先在连接调用时创建指示器，然后在连接完成加载时删除事件指示器

//call this when connection start
UIActivityIndicator *activityIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
activityIndicator.frame = CGRectMake(140, 236, 37, 37);
[activityIndicator startAnimating];
[self.view addSubview:activityIndicator];
self.view.userInteractionEnabled = NO;

//remove activity indicator while connection did finish loadin
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    [activityIndicator stopAnimating];
    [activityIndicator removeFromSuperview];
    self.view.userInteractionEnabled = YES;
}