Animation Tools
Material design has many nifty new animations. Some of them can be achieved quickly. Others require more work, but Android provides some tools to help you out.
Circular reveal
The circular reveal animation is used in material design to look like an ink flood-fill. A view or piece of content is progressively revealed outward from a point of interaction, usually a point pressed by the user. Figure 33.6 gives you an idea of what a circular reveal can bring to the party.
Figure 33.6 Circular reveal from pressing an item in BeatBox
You may remember using a simple version of this way back in Chapter 6 ...
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