Android multi-level tree list control

In the process of developing apps, we often encounter the effect of multi-level list display. There are no list controls of level 3, level 4 or more in the Android native SDK. Therefore, we need to implement a treelistview like control ourselves. The following is an effect diagram in my project, which can support multi-level list expansion.

There is an expandlistview control in Android, but this control only supports two-level lists. For multi-level lists, it's not easy to override this. The idea of implementing this list is to recursively construct a child parent relationship. Don't talk too much. Experience activity in the code

Adapter this adapter is a treelistviewadapter that inherits its own definition. The core implementation is in treelistviewadapter

Custom treelistviewadapter is an adapter of the whole tree structure, which mainly realizes the operation of node nodes, click, select, change and update, etc

Node model class

Treehelper is also the core operation class. Its main function is to match business data with node data

The core code is these. I hope it will help you.

Demo source code: http://xiazai.jb51.net/201611/yuanma/AndroidTreeView (jb51.net). rar

The above is the whole content of this article. I hope it will be helpful to your study, and I hope you can support programming tips.