支持自动展开/收起，并自动置顶功能的多级列表。同时支持多个展开的条目，自动吸顶功能的RecycleView实现。
项目配置
allprojects {
repositories {
maven { url 'https://jitpack.io' }
}
}
添加依赖
implementation 'com.github.dxh104.ExpandRecycleView:expand_recycleview:2.0.5'
example {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_same_height_expand);
initView();
TreeNodeLevelManager.getInstance().clearFreeLevel();
TreeNodeLevelManager.getInstance().setFreeLevel(1);//不会强制关闭,expandOnlyOneGroup
TreeNodeLevelManager.getInstance().clearLevelHightCache();
TreeNodeLevelManager.getInstance().putHeight(1, 50);
TreeNodeLevelManager.getInstance().putHeight(2, 50);
TreeNodeLevelManager.getInstance().putHeight(3, 50);
TreeNodeLevelManager.getInstance().putHeight(4, 50);
List<TreeNode<Title>> treeNodeList = DataHelper.testgetRootExpandTreeNodeList();
ExpandRecycleViewAdapter<TreeNode<Title>> treeNodeExpandRecycleViewAdapter = new ExpandRecycleViewAdapter<TreeNode<Title>>(treeNodeList) {
private TextView tvTitle;
@Override
protected int setItemViewType(List<TreeNode<Title>> mDatas, int position) {
return 0;
}
@Override
protected int getLayoutId(int viewType) {
return R.layout.item_group;
}
@Override
protected void initView(BaseViewHolder holder) {
tvTitle = (TextView) holder.getView(R.id.tv_title);
}
@Override
protected void setListener(BaseViewHolder holder, List<TreeNode<Title>> mDatas) {
}
@Override
protected void bindData(BaseViewHolder holder, int position, TreeNode<Title> titleTreeNode) {
tvTitle.setText(titleTreeNode.getData().titleContent);
tvTitle.setTextColor(titleTreeNode.getData().textColor);
tvTitle.setBackgroundColor(titleTreeNode.getData().background);
}
@Override
protected void createFixView(View view, int position, TreeNode<Title> titleTreeNode) {
super.createFixView(view, position, titleTreeNode);
if(view==null){
return;
}
view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Integer itemPostition = (Integer) v.getTag();
collapseGroup(itemPostition);
}
});
}
@Override
protected void changeFixViewData(View view, int position, TreeNode<Title> titleTreeNode) {
super.changeFixViewData(view, position, titleTreeNode);
if (view == null) {
return;
}
tvTitle = (TextView) view.findViewById(R.id.tv_title);
tvTitle.setText(titleTreeNode.getData().titleContent);
tvTitle.setTextColor(titleTreeNode.getData().textColor);
tvTitle.setBackgroundColor(titleTreeNode.getData().background);
}
};
treeNodeExpandRecycleViewAdapter.setmExpandRecycleView(expandRecycleView);
treeNodeExpandRecycleViewAdapter.setMeasureDataHeightMarginTop(false);//固定高度不用开启测量
treeNodeExpandRecycleViewAdapter.setOpenStickyTop(true);//打开吸顶功能（默认开启）
treeNodeExpandRecycleViewAdapter.refreshExpandData();//更新可展开数据
recyclerView.setAdapter(treeNodeExpandRecycleViewAdapter);
treeNodeExpandRecycleViewAdapter.setOnItemTriggerListner(new ExpandRecycleViewAdapter.OnItemTriggerListner<TreeNode<Title>>() {
@Override
public void onItemCheckListner(View v, int position, TreeNode<Title> treeNode, Integer[] ids, boolean isChecked) {
String idsStr = "";
for (int i = 0; i < ids.length; i++) {
idsStr += ids[i];
}
Log.e(TAG, "onItemCheckListner: position=" + position + " ids=" + idsStr + " isChecked=" + isChecked);
}
@Override
public void onItemExpandListner(View v, int position, TreeNode<Title> treeNode, Integer[] ids, boolean isExpand) {
String idsStr = "";
for (int i = 0; i < ids.length; i++) {
idsStr += ids[i];
}
Log.e(TAG, "onItemExpandListner: position=" + position + " ids=" + idsStr + " isExpand=" + isExpand);
if (isExpand) {
treeNodeExpandRecycleViewAdapter.collapseGroup(position);
} else {
treeNodeExpandRecycleViewAdapter.expandGroup(position);
// treeNodeExpandRecycleViewAdapter.expandOnlyOneGroup(position);
}
}
});
}
}