Android RecyclerView的基本用法

activity_main： <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" > <android.support.v7.widget.RecyclerView android:id="@+id/id_recyclerview" android:divider="#ffff0000" android:dividerHeight="10dp" android:layout_width="match_parent" android:layout_height="match_parent" /> </RelativeLayout> item <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="50dp"> <TextView android:id="@+id/text" android:layout_width="match_parent" android:layout_height="50dp" android:gravity="center" android:textColor="#000000" android:text="1" /> </LinearLayout>

MainActivity package com.example.administrator.recycledemo; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.TextView; import java.util.ArrayList; import java.util.List; public class MainActivity extends AppCompatActivity { private List<String> data_list ; private RecyclerView mRecyclerView; private String[] content = {"12", "12", "12", "12", "12", "12", "12", "12", "12", "12", "12", "12", "12", "12", "12", "12", "12", "12", "12", "12", "12", "12", "12"}; private HomeAdapter mAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initData(); mRecyclerView = (RecyclerView) findViewById(R.id.id_recyclerview); /** *注意 这里是设置横向或者纵向根据实际情况设置 */   LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this); linearLayoutManager.setOrientation(LinearLayoutManager.HORIZONTAL); mRecyclerView.setLayoutManager(linearLayoutManager); mRecyclerView.setAdapter(mAdapter = new HomeAdapter()); } protected void initData() { data_list = new ArrayList<String>(); for (int i = 0; i < content.length; i++) { data_list.add( content[i]); } } class HomeAdapter extends RecyclerView.Adapter<HomeAdapter.MyViewHolder> { @Override public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { MyViewHolder holder = new MyViewHolder(LayoutInflater.from( MainActivity.this).inflate(R.layout.item, parent, false)); return holder; } @Override public void onBindViewHolder(MyViewHolder holder, int position) { holder.tv.setText(data_list.get(position)); } @Override public int getItemCount() { return data_list.size(); } class MyViewHolder extends RecyclerView.ViewHolder { TextView tv; public MyViewHolder(View view) { super(view); tv = (TextView) view.findViewById(R.id.text); } } } }