IMO your code is far more complex than it needs to...

# codereview

[Andreas Sinz]

IMO your code is far more complex than it needs to be (e.g. temporarily storing data inside the class tempAdIds, currentAdId, ...) which can lead to nasty race conditions/other kind of bugs later on

[ar-g]

Thanks to pointing this out. I have to store tempAdIds somewhere to attach to selected images.