Android 树形结构数据的展示

这边建议使用

BaseRecyclerViewAdapterHelper

万能适配器在Recyclerview中显示

让你子对象和父对象分别继承

BaseNode和BaseExpandNode

这是BaseNode

abstract class BaseNode {

    /**
     * 重写此方法，获取子节点。如果没有子节点，返回 null 或者 空数组
     *
     * 如果返回 null，则无法对子节点的数据进行新增和删除等操作
     */
    abstract val childNode: MutableList<BaseNode>?

}

这是BaseExpandNode

abstract class BaseExpandNode : BaseNode() {
    var isExpanded: Boolean = true

}

继承之后父对象复写其中方法比如

public class FiveNode  extends BaseExpandNode {

    private List<BaseNode> childNode;
    private String title;
    private int id;
    private boolean hasChild;
    private String ip;
    private String type;

    public FiveNode(List<BaseNode> childNode, String title, int id,boolean hasChild,String ip,String type) {
        this.childNode = childNode;
        this.title = title;
        this.id = id;
        this.hasChild=hasChild;
        this.ip=ip;
        this.type=type;
        setExpanded(false);
    }

    public String getIp() {
        return ip;
    }

    public void setIp(String ip) {
        this.ip = ip;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public String getTitle() {
        return title;
    }

    public int getId() {
        return id;
    }
    public boolean isHasChild(){
        return hasChild;
    }

    @Nullable
    @Override
    public List<BaseNode> getChildNode() {
        return childNode;
    }
}

适配器继承

BaseNodeAdapter

public class TreeAdapter extends BaseNodeAdapter {

    private onItemClickListener onItemClickListener;

    public TreeAdapter() {
        super();
        addNodeProvider(new FirstProvider());
    }

    @Override
    protected int getItemType(@NotNull List<? extends BaseNode> list, int i) {
        BaseNode node = list.get(i);
        if (node instanceof FirstNode) {
            return 1;
        } 
        return -1;
    }
}

其中provider继承

BaseNodeProvider

public class FirstProvider extends BaseNodeProvider {

    @Override
    public int getItemViewType() {
        return 1;
    }

    @Override
    public int getLayoutId() {
        return R.layout.item_node_first;
    }

    @Override
    public void convert(@NotNull BaseViewHolder baseViewHolder, @Nullable BaseNode baseNode) {
     
    }

    @Override
    public void onClick(@NotNull BaseViewHolder helper, @NotNull View view, BaseNode data, int position) {
        getAdapter().expandOrCollapse(position);
    }
}

效果图

Android 树形结构数据的展示