Do not use FadeInBitmapDisplayer with memory cache after initial load

[rfgamaral]

The FadeInBitmapDisplayer is a nice touch and makes lazy loading look great. But if used in conjunction with the memory cache, the images will keep constantly fading while scrolling a ListView and that is kinda annoying. This shouldn't happen. Since the image is in the memory, it will be instantly loaded and the fading is just distracting.

This fading should only happen once when first loading the image and not be used again. If memory cache is enabled that is. This is just a suggestion though.

[ghost]

This is good suggestion, Google Play Market behave this way as suggested

[nostra13]

I understand, this is quite right behavior, but it requires quite much efforts. I'll think about it but it has low priority for now. You are free to make pull requests if you decide to implement this feature.

[nostra13]

I think I have an easy solution here - #149