RecyclerView 列表简单用法

Posted 2021-02-12 lcx90

新建文件：RecyclerList类名

public class RecyclerList {
    private String title;
    private String rate;

    public RecyclerList(){

    }

    private RecyclerList(String title, String rate) {
        this.title = title;
        this.rate = rate;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getRate() {
        return rate;
    }

    public void setRate(String rate) {
        this.rate = rate;
    }
}

 新建文件：RecyclerViewAdapter适配器

public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.ViewHolder> {
    private List<RecyclerList> mList;

    public RecyclerAdapter(List<RecyclerList> list) {
        mList = list;
    }

    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {

        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.activity_recycler_item,viewGroup,false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHolder viewHolder, int i) {
        RecyclerList listItem = mList.get(i);
        viewHolder.mTitle.setText(listItem.getTitle());
        viewHolder.mRate.setText(listItem.getRate());
    }

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

    static class ViewHolder extends RecyclerView.ViewHolder{
        View itemView;
        TextView mTitle;
        TextView mRate;
        public ViewHolder(View view) {
            super(view);
            itemView = view;
            mTitle = (TextView) view.findViewById(R.id.title);
            mRate = (TextView) view.findViewById(R.id.rate);
        }
    }

}

 activity里面代码

public class recyclerViewActivity extends AppCompatActivity {

    private RecyclerView recyclerView;

    private List<RecyclerList> mList = new ArrayList<>();

    private LinearLayoutManager layoutManager;

    private RecyclerAdapter adapter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_recycler_view);

        recyclerView = (RecyclerView) findViewById(R.id.recycler_view);

        layoutManager = new LinearLayoutManager(this);

        recyclerView.setLayoutManager(layoutManager);

        RecyclerList item1 = new RecyclerList();
        item1.setTitle("小偷家族");
        item1.setRate("8.7");
        mList.add(item1);
        RecyclerList item2 = new RecyclerList();
        item2.setTitle("蜘蛛侠：平行宇宙");
        item2.setRate("8.7");
        mList.add(item2);

        RecyclerList item3 = new RecyclerList();
        item3.setTitle("三次元女友");
        item3.setRate("6.1");
        mList.add(item3);

        RecyclerList item4 = new RecyclerList();
        item4.setTitle("悠哉日常大王剧场版：假期活动");
        item4.setRate("8.9");
        mList.add(item4);

        adapter = new RecyclerAdapter(mList);

        recyclerView.setAdapter(adapter);

    }
}