How to show an activity indicator in SDWebImage

Question

Currently i am integrating SDWebImage in my project by following below things

1)#import \"UIButton+WebCache.h\"

2)[button setImageWithURL:url placeholderImag

Answer 1

the best way is to add the activityIndicator in all "setImage" functions in UIImageView+WebCache.m, after that you remove it in "webImageManager:r didFinishWithImage:" , i test it in device and it work smoothly, her's an example :

  - (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder
 {


UIActivityIndicatorView *activity = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:(UIActivityIndicatorViewStyleWhiteLarge)];
[activity startAnimating];
[activity setCenter:self.center];
[self addSubview:activity];
[activity release];



SDWebImageManager *manager = [SDWebImageManager sharedManager];

UIImage *cachedImage = [manager imageWithURL:url];

if (cachedImage)
{
    // the image is cached -> remove activityIndicator from view
    for (UIView *v in [self subviews])
    {
        if ([v isKindOfClass:[UIActivityIndicatorView class]])
        {
            [activity removeFromSuperview];
        }
    }
}

[self setImageWithURL:url placeholderImage:placeholder options:0];
}

and you remove it with a fade animation ;) :

 - (void)webImageManager:(SDWebImageManager *)imageManager didFinishWithImage:(UIImage *)image
{ 

for (UIView *v in [self subviews])
{
    if ([v isKindOfClass:[UIActivityIndicatorView class]])
    {
       // NSLog(@"-didFinishWithImage-");
        [((UIActivityIndicatorView*)v) stopAnimating];
        [v removeFromSuperview];
    }
}


[UIView beginAnimations:@"fadeAnimation" context:NULL]; 
[UIView setAnimationDuration:0.9];
self.alpha = 0;
self.image = image;
self.alpha=1;
//[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:self cache:YES]; 
[UIView commitAnimations];

 }