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Android, appcompat v21, implement scrolling techniques

I think this blog post has what you're looking for. It offers a guide to make a layout similar to that (although you might have to add some code to color the app bar).

The grand idea behind this sort of "layout trick" is to implement a ScrollView with some sort of onScrollChanged listener. The aim is to make your Activity aware of scroll changes and then could transform the required elements.

Once you could get a sense of the scroll position (and changes) you could use that value as a base to apply color transformation (for the ActionBar's background) and to rescale the header text.

Hope this helps.

Categories : Android

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