Awesome

TreeView

An android tree view with high performance and rich functions

中文介绍

Captures

There are some gifs from Demo:

• Select node:

  <img src='images/show_demo_select.gif' width='240'/>

• Operate all:

  <img src='images/show_demo_more_featrue.gif' width='240'/>

Features

• expandAll/collapseAll
• expandNode/collapseNode
• expandLevel/collapseLevel
• toggleNode
• deleteNode/addNode
• selectNode/deselectNode
• selectAll/deselectAll
• getSelectedNodes
• refreshTreeView

Usage

1.Reference the library from your module's build.gradle:

implementation 'me.texy.treeview:treeview_lib:1.0.6'

2.Implement your all level's BaseNodeViewBinder

Sample：

public class FirstLevelNodeViewBinder extends BaseNodeViewBinder {
  TextView textView;
  public FirstLevelNodeViewBinder(View itemView) { 
    super(itemView);  
    textView = (TextView) itemView.findViewById(R.id.node_name_view)
  }
  
  @Override
  public int getLayoutId() {
    return R.layout.item_first_level;
  }
  
  @Override
  public void bindView(TreeNode treeNode) {
    textView.setText(treeNode.getValue().toString());
  }
}

SecondLevelNodeViewBinder
ThirdLevelNodeViewBinder
.
.
.

If you want add the selectable feature,replace BaseNodeViewBinder with CheckableNodeViewBinder.

3.Implement the BaseNodeViewFactory

Sample：

public class MyNodeViewFactory extends BaseNodeViewFactory {
  @Override
  public BaseNodeViewBinder getNodeViewBinder(View view, int level) {
    switch (level) {
      case 0:
        return new FirstLevelNodeViewBinder(view);
      case 1:
        return new SecondLevelNodeViewBinder(view);
      case 2:
        return new ThirdLevelNodeViewBinder(view);
      default:
        return null;
    }
  }
}

If you do not want to create a class file,just implement a anonymous inner class in TreeView's constructor

4.Add TreeView to wherever you want

Sample:

TreeNode root = TreeNode.root();
//build the tree as you want
for (int i = 0; i < 5; i++) {
  TreeNode treeNode = new TreeNode(new String("Child " + "No." + i));
  treeNode.setLevel(0);
  root.addChild(treeNode);
}
View treeView = new TreeView(root, context, new MyNodeViewFactory()).getView();
//add to view group where you want 

License

   Copyright 2017 shineM.

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.