Android 用Databinding写recyclerview的adapter

android 用databinding写recyclerview的adapter

1还是写一个模板，以后要用的时候直接cv大法，粘贴自己写的模板毕竟更方便。

2随便来一个item的布局

3与之对应的adapter

public class firstnaviadapter extends recyclerview.adapter {

    private list listbeen;
    private context context;

    public firstnaviadapter(list listbeen, context context) {//构造函数要数据跟上下文
        this.listbeen = listbeen;
        this.context = context;
    }

    @override
    public viewholder oncreateviewholder(viewgroup parent, int viewtype) {
        itemfirstnavibinding binding = databindingutil.inflate(layoutinflater.from(context), r.layout.item_first_navi,
                parent, false);
        return new viewholder(binding.getroot());
    }

    @override
    public void onbindviewholder(viewholder holder, int position) {
        itemfirstnavibinding binding = databindingutil.getbinding(holder.itemview);
        binding.setlistbean(listbeen.get(position));
        binding.executependingbindings();
    }

    @override
    public int getitemcount() {
        return listbeen.size();
    }

    public static class viewholder extends recyclerview.viewholder {

        public viewholder(view itemview) {
            super(itemview);
        }
    }
}

代码很简单，没有什么要标记的

我之前还看过一个更优雅的写法，忘记了，等我有时间在学习一下在修改一下。