活动指示器

UIWebView *_webView;

//活动指示器

    activityV=[[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];//风格
    activityV.frame=CGRectMake(100, 100, 100, 100);
    activityV.backgroundColor=[UIColor blueColor];
    activityV.hidden=YES;

    [_webView addSubview: activityV];

 

//开始转动，停止转动

    [activityV startAnimating];

    [activityV stopAnimating];