Material Witness Compat

A Google I/O 2014 demo written by Romain Guy ported to work on all versions of the platform back to Android 2.3.3 (API Level 10).

The original Material Witness is a sample application for the new Material Design APIs introduced in the Android L Preview SDK. Most of the features have been backported and include:

Dynamic palette using the palette support library
Circular reveal using the blog post by Romain Guy using bitmap shaders
Activity transitions using the DevByte from Chet Haase on custom activity animations
Path tracing using the blog post by Romain Guy using path effects

Features that couldn't be backported include:

Custom theme colors. Whatever is allowed by the the v7 appcompat library has been implemented
Ripple drawables

The complete video of the Google I/O 2014 talk detailing how the original application works can be found on YouTube.

Demo

All gifs are in slow motion and were recorded on a Android 4.4 KitKat device (API Level 19).

Activity transitions	Circular reveal	Path tracing

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How to use this source code

The google-io-2014-compat project can be opened in Android Studio. It contains a single module called app in the app/ folder.

The project can be compiled from the command line using Gradle.

The actual source code and resources can be found in app/src/main/. The only dependencies are in app/lib/.

License

Copyright 2014 Rahul Parsani

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Library licenses

androidsvg-1.2.1 is subject to the Apache License, Version 2.0. More information on the official web site.

android-support-v7-palette is subject to the Apache License, Version 2.0

android-support-v7-cardview is subject to the Apache License, Version 2.0

nineoldandroids-2.4.0 is subject to the Apache License, Version 2.0. More information on the official web site.

roundedimageview-1.4.0 is subject to the Apache License, Version 2.0. More information on the official web site.

License

unrarp/google-io-2014-compat

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