UIActivityIndicatorView support

[leonardoobaptistaa]

just added suport to UIActivityIndicatorView while image is downloading, if you like to add to the main project, here it is.

[nickdaugherty]

Bummer this isn't part of SDWebImage :( Would be very nice to have UIActivityIndicatorViews while images are loading out of the box, rather than adding another external repo or hacking something together.

[ghost]

+1

[anton-matosov]

+1

[vittoriom]

+1

[MartinHerman]

+1

[leonardoobaptistaa]

Hey @MartinHerman ,
you can add this other project to your Podfile: https://github.com/JJSaccolo/UIActivityIndicator-for-SDWebImage

They don't want an activity indicator on the main project.

[bpoplauschi]

Hi guys. Sorry it took so much, but I will reopen the pull request and think about this in the near future. Note: I briefly looked at the implementation from JJSaccolo and I would avoid having another set of setImageWithUrl methods just for the usingActivityIndicatorStyle param. That would make this library even harder to maintain. But maybe we can find some other way

[Nihility-Ming]

Create a category is nice idea. :)