I'm not a Gif maker, I'm a developer
Recently, I discovered the cool animation which transforms a tick into a plus in the I/O 2014 app. I looked for code that animates this button and I came across this: a frame by frame animation aka GIF!
I through it must be a way to do it pragmatically. After reflection, it's not easy to get the same effect.
Finally, I found a simple way (playing with canvas rotation + line translations) to mimic the animation.
License
Copyright 2013 Flavien Laurent
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.