# fix:- demo bug

app/src/main/java/com/chad/baserecyclerviewadapterhelper/adapter/node/tree/provider/FirstProvider.java

@@ -9,14 +9,12 @@ import androidx.core.view.ViewCompat;
 import com.chad.baserecyclerviewadapterhelper.R;
 import com.chad.baserecyclerviewadapterhelper.adapter.node.tree.NodeTreeAdapter;
 import com.chad.baserecyclerviewadapterhelper.entity.node.tree.FirstNode;
-import com.chad.baserecyclerviewadapterhelper.entity.node.tree.SecondNode;
 import com.chad.library.adapter.base.entity.node.BaseNode;
 import com.chad.library.adapter.base.provider.BaseNodeProvider;
 import com.chad.library.adapter.base.viewholder.BaseViewHolder;
 
 import org.jetbrains.annotations.NotNull;
 
-import java.util.ArrayList;
 import java.util.List;
 
 public class FirstProvider extends BaseNodeProvider {
@@ -79,8 +77,6 @@ public class FirstProvider extends BaseNodeProvider {
     @Override
     public void onClick(@NotNull BaseViewHolder helper, @NotNull View view, BaseNode data, int position) {
         // 这里使用payload进行增量刷新（避免整个item刷新导致的闪烁，不自然）
-//        getAdapter().expandOrCollapse(position, true, true, NodeTreeAdapter.EXPAND_COLLAPSE_PAYLOAD);
-        getAdapter().nodeAddData(data,new SecondNode(new ArrayList<>(),"p:"+position));
-        getAdapter().notifyDataSetChanged();
+        getAdapter().expandOrCollapse(position, true, true, NodeTreeAdapter.EXPAND_COLLAPSE_PAYLOAD);
     }
 }

app/src/main/java/com/chad/baserecyclerviewadapterhelper/adapter/node/tree/provider/SecondProvider.java

@@ -36,15 +36,11 @@ public class SecondProvider extends BaseNodeProvider {
 
     @Override
     public void onClick(@NotNull BaseViewHolder helper, @NotNull View view, BaseNode data, int position) {
-//        SecondNode entity = (SecondNode) data;
-//        if (entity.isExpanded()) {
-//            getAdapter().collapse(position);
-//        } else {
-//            getAdapter().expandAndCollapseOther(position);
-//        }
-
-//        BaseNode fNode = getAdapter().findParentNode(position);
-//        getAdapter().nodeRemoveData();
-//        getAdapter().notifyItemRemoved(position);
+        SecondNode entity = (SecondNode) data;
+        if (entity.isExpanded()) {
+            getAdapter().collapse(position);
+        } else {
+            getAdapter().expandAndCollapseOther(position);
+        }
     }
 }