AndroidPlayground:我自己的小操场尝试新事物

AndroidPlayground 我自己的小游乐场，尝试新事物。 执照 Copyright 2017 Michael Langer (mchllngr) 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 dist