recyclerview展示数据（MVP）

首先新建4个包，分别是contract，model，view，presenter

然后添加recyclerview依赖

主布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main"    android:layout_width="match_parent" android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.bwei.fragment.mvpdemolx.view.MainActivity">    <android.support.v7.widget.RecyclerView        android:layout_width="match_parent"        android:layout_height="match_parent"        android:id="@+id/mycycler"        ></android.support.v7.widget.RecyclerView></RelativeLayout>

子布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="match_parent"    android:layout_height="20dp">    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:id="@+id/tv"/></LinearLayout>

代码

contract包下

public class Contract {    public interface IModel{        List<String> getData();    }    public interface IView{       void setData(List<String> list);    }    public interface IPresenter{       void showData();    }}

model包下

public class Model implements Contract.IModel{    List<String> list=new ArrayList<>();    @Override    public List<String> getData() {        for (int i=0;i<50;i++){            list.add("条目"+i);        }        return list;    }}

presenter包下

public class Persenter implements Contract.IPresenter{   private Contract.IView iView;    private Model model;    public Persenter(Contract.IView iView) {        this.iView = iView;        model=new Model();    }    @Override    public void showData() {        List<String> list=model.getData();        iView.setData(list);    }}

view包下

public class MainActivity extends AppCompatActivity implements Contract.IView{    private RecyclerView recyclerView;   private Adapter adapter;    private Persenter persenter=new Persenter(this);    List<String> list;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        recyclerView = (RecyclerView) findViewById(R.id.mycycler);        persenter.showData();    }    @Override    public void setData(List<String> list) {        recyclerView.setLayoutManager(new LinearLayoutManager(this));        recyclerView.setAdapter(new Adapter(MainActivity.this,list));    }}

适配器

public class Adapter extends RecyclerView.Adapter<Adapter.MyViewHolder>{    private Context context;    private List<String> list=new ArrayList<>();    public Adapter(Context context, List<String> list) {        this.context = context;        this.list = list;    }    @Override    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        MyViewHolder holder = new MyViewHolder(LayoutInflater.from(                context).inflate(R.layout.item, parent,                false));        return holder;    }    @Override    public void onBindViewHolder(MyViewHolder holder, int position) {        holder.tv.setText(list.get(position));    }    @Override    public int getItemCount() {        return list.size();    }    class MyViewHolder extends RecyclerView.ViewHolder {        TextView tv;        public MyViewHolder(View view) {            super(view);            tv = (TextView) view.findViewById(R.id.tv);        }    }}