BadgeNumberTree是一个Android版Demo App，出自我的博客文章《用树型模型管理App数字和红点提示》。
可以下载现成的APK试用：下载链接。
Copyright 2016 Tielei Zhang (zhangtielei.com).
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.