RecyclerView 实现瀑布流 数据横向竖向排序

recycleActivity.xml

RecycleActivity.class

public class RecycleActivity extends AppCompatActivity {
    List list=new ArrayList<>();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_recycle);
        //添加50条测试数据
        for (int i=1;i<50;i++){
            list.add(new Bean(i));
        }
        RecyclerView recyclerView = findViewById(R.id.recycleView1);
        //布局加载器  StaggeredGridLayoutManager.HORIZonTAL 为纵向   StaggeredGridLayoutManager.VERTICAL 为横向
        recyclerView.setLayoutManager(new StaggeredGridLayoutManager(6,StaggeredGridLayoutManager.HORIZONTAL));
        recyclerView.setAdapter(new RecyclerAdapter(list));
        }

}

RecyclerAdapter 和 ViewHolder

public class RecyclerAdapter extends RecyclerView.Adapter {

    List list;


    public RecyclerAdapter(List list1) {
        list=list1;
    }

    @NonNull
    @Override
    public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View inflate = LayoutInflater.from(parent.getContext()).inflate(R.layout.item1, parent, false);
        return new MyViewHolder(inflate);
    }

    @Override
    public void onBindViewHolder(@NonNull  RecyclerAdapter.MyViewHolder holder, int position) {
        holder.id.setText(list.get(position).getA()+" ");
    }

    @Override
    public int getItemCount() {
        return list.size();
    }

    class MyViewHolder extends RecyclerView.ViewHolder{
        TextView id;
        public MyViewHolder(@NonNull View itemView) {
            super(itemView);
            id = itemView.findViewById(R.id.id1);
        }
    }
}

item1布局

Bean 实体类

public class Bean {
    private int a;

    public Bean(int i) {
        a=i;
    }

    public int getA() {
        return a;
    }

    public void setA(int a) {
        this.a = a;
    }
}