• Inspired by Persei for iOS.
• Currently it's just a demo. Far away from a lib.
• MinSdkVersion is 21 due to the usage of Circular Reveal Effect.

The implementation is a little bit tricky. Please tell me if anyone has better thoughts.

• TabLayout wrapped in AppBarLayout for the tab bar.
• FragmentTabHost for holding tab content.
• CoordinatorLayout for interactions between tab bar and tab content.
• Custom view for ripple effect.
• Fragment enter transition for reveal effect.

• A little modification is made on TabLayout to remove the underline tab indicator.
• FragmentTabHost is also modified for two reasons:
  1. The detach of old fragment is delayed. Or reveal animation will perform on a white background instead of the old content.
  2. Before adding or attaching the new fragment, its reveal point must be updated through FragmentTabHost . Or reveal animation will always start from left-top corner.
• Use a custom RippleView instead of Android's ripple effect.

Copyright (C) 2016, gelitenight([email protected]).

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