RecyclerView的使用

最新推荐文章于 2022-06-29 23:18:12 发布

原创最新推荐文章于 2022-06-29 23:18:12 发布 · 429 阅读

0 ·

CC 4.0 BY-SA版权

Android 专栏收录该内容

28 篇文章

订阅专栏

本文详细介绍如何使用 RecyclerView 的 Adapter 进行视图展示。包括 Adapter 的继承方式、ViewHolder 的创建及其实现方法，以及如何绑定数据等内容。此外还介绍了如何设置布局管理器来实现 Listview 或 Gridview 的显示效果。

之前做一个应用商店类的项目,第一次使用RecyclerView,下面说说怎么使用,这里只说adapter使用

1,首先是Adapter 的继承,不再像Listview继承BaseAdapter,而是继承 RecycleView.Adapter<>,注意后面的泛型是你的ViewHolder类型.

	public class RecommendAdapter extends RecyclerView.Adapter<MyViewHolder> implements Observer {}

	2,创建ViewHolder:

class MyViewHolder extends RecyclerView.ViewHolder{
    TextView textView;
    ImageView imageView;
    Button button;
    LinearLayout downloadLayout;
    LinearLayout describeLayout;
    TextView sizeView;
    TextView statusView;
    TextView describeView;
    TextView size;
    TextView titleView;
    TextView rateView;
    ProgressBar progressBar;
    LinearLayout reconmmendItem;

    public MyViewHolder(View itemView) {
        super(itemView);
        titleView = (TextView) itemView.findViewById(R.id.app_type_count);
        textView = (TextView) itemView.findViewById(R.id.app_name_tv);
        imageView = (ImageView) itemView.findViewById(R.id.app_icon);
        button = (Button) itemView.findViewById(R.id.app_operation_bt);
        downloadLayout = (LinearLayout) itemView.findViewById(R.id.app_down_ll);
        describeLayout = (LinearLayout) itemView.findViewById(R.id.app_describe_ll);
        sizeView = (TextView) itemView.findViewById(R.id.app_size_tv);
        statusView = (TextView) itemView.findViewById(R.id.app_status_tv);
        describeView = (TextView) itemView.findViewById(R.id.app_describe_tv);
        size = (TextView) itemView.findViewById(R.id.app_down_size_tv);
        rateView = (TextView) itemView.findViewById(R.id.app_down_rate_tv);
        progressBar = (ProgressBar) itemView.findViewById(R.id.app_down_pb);
        reconmmendItem = (LinearLayout) itemView.findViewById(R.id.recommend_item);
    }

     3,实现方法:

	@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = null;
    if(viewType == 0) {
        view = layoutInflater.inflate(R.layout.manage_item_text,parent,false);
    }else {
        view = layoutInflater.inflate(R.layout.recommend_item,parent,false);
    }

    MyViewHolder viewHolder = new MyViewHolder(view);
    return viewHolder;
}

4: 绑定数据:

public void onBindViewHolder(final MyViewHolder holder, int position){}

这样就搞定了,是不是比ListView的简单一些,最后请记得设置布局管理器,可以切换是Listview还是gridview.....

mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity(), LinearLayoutManager.VERTICAL, false));

mRecyclerView.setLayoutManager(new GridLayoutManager(this,4));