RecycleView(插件式架构)使用

来源：互联网发布：泰国试管婴儿知乎编辑：程序博客网时间：2024/04/17 06:22

注意事项：
1）使用RecycleView 必须先设置适配器，再设置布局参数，这个顺序不能错。
2）强制开发者使用ViewHolder模式，写一个MyViewHolder继承自ViewHolder类。
3）在Adapter构造函数里面传递数据：只有三个：上下文、要显示数据。

不关注item是否在正确的位置，如何显示；
     通过LayoutManager类来控制RecyclerView显示的风格；setLayoutManager()
不关注item间如何分割；
     通过ItemDecoration类来管理Item间的分隔；(以Item开头的类)
不关注item增加与删除的动画效果
      通过ItemAnimator类来管理Item增删的动画；
只关注如何回收和复用View；
     强制使用ViewHolder类   Adapter

如何添加自定义的头？

如何自己实现点击事件？

常见的错误总结：

代码实现：

/** * RecycleView的使用 */public class MainActivity extends Activity { private RecyclerView recycleView; private List<string> mDatas; private MyAdapter mAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // 初始化数据 initDatas(); //初始化控件 initViews(); } private void initDatas() { mDatas = new ArrayList<string>(); for (int i = 'a'; i < 'z'; i++) { mDatas.add("" + (char) i); } } private void initViews() { recycleView = (RecyclerView) findViewById(R.id.recycleView); MyAdapter myAdapter = new MyAdapter(this, mDatas); recycleView.setAdapter(myAdapter); //为RecycleView设置要显示的样式显示为ListView的样式垂直方向 LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false); recycleView.setLayoutManager(linearLayoutManager); //加入条目的分割线 RecycleView的滚动方向 recycleView.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL_LIST)); }}

 package com.xunpige.myapplication.adapter;import android.content.Context;import android.support.v4.app.FragmentActivity;import android.support.v7.widget.RecyclerView;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView;import android.widget.TextView;import com.lidroid.xutils.BitmapUtils;import com.nostra13.universalimageloader.core.ImageLoader;import com.xunpige.myapplication.R;import com.xunpige.myapplication.bean.HomeAdvertiseEntity;import java.util.List;/** * Created by Administrator on 2016/5/9 0009. */public class HomeGoodBrandAdapter extends RecyclerView.Adapter<homegoodbrandadapter myviewholder=""> {    private Context mContext;    private List<homeadvertiseentity brandsbean="" listbean=""> brandsList;    public HomeGoodBrandAdapter(Context mContext, List<homeadvertiseentity brandsbean="" listbean=""> brandsList) {        this.mContext = mContext;        this.brandsList = brandsList;    }    @Override    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View view = LayoutInflater.from(mContext).inflate(R.layout.item_home_good_brand, null);        MyViewHolder myViewHolder = new MyViewHolder(view);        return myViewHolder;    }    @Override    public void onBindViewHolder(final MyViewHolder holder, final int position) {        HomeAdvertiseEntity.BrandsBean.ListBean listBean = brandsList.get(position);String pic = listBean.getPic();        ImageLoader.getInstance().displayImage(pic, holder.iv);        if (myItemClickListener != null) {            holder.itemView.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View v) {                    myItemClickListener.onItemClick(holder.itemView, position);                }            });        }    }    //RecycleView条目点击事件    private MyItemClickListener myItemClickListener;    public interface MyItemClickListener {        void onItemClick(View view, int position);    }    public void setOnItemClickListener(MyItemClickListener listener) {        this.myItemClickListener = listener;    }    @Override    public int getItemCount() {        return 6;    }    class MyViewHolder extends RecyclerView.ViewHolder {        private final ImageView iv;        public MyViewHolder(View itemView) {            super(itemView);            iv = (ImageView) itemView.findViewById(R.id.iv);        }    }}</homeadvertiseentity></homeadvertiseentity></homegoodbrandadapter>

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