Android学习之SwipeRefreshLayout+RecyclerView+CardView

首先添加包的依赖

    compile 'com.android.support:recyclerview-v7:24.2.1'compile 'com.android.support:cardview-v7:22.2.1'

布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context="com.example.konghao.recyclerview.MainActivity"><android.support.v4.widget.SwipeRefreshLayoutandroid:id="@+id/SwipeRefreshLayout"android:layout_width="match_parent"android:layout_height="match_parent"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"><android.support.v7.widget.RecyclerViewandroid:id="@+id/RecyclerView"android:layout_width="match_parent"android:layout_height="wrap_content"/></LinearLayout></android.support.v4.widget.SwipeRefreshLayout></LinearLayout>

item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"android:orientation="vertical"android:layout_margin="5dp"android:layout_width="match_parent"android:layout_height="wrap_content"><android.support.v7.widget.CardViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_margin="5dp"app:cardCornerRadius="10dp"android:elevation="10dp"><TextViewandroid:layout_margin="10dp"android:textSize="18sp"android:id="@+id/name"android:layout_width="match_parent"android:layout_height="wrap_content"/></android.support.v7.widget.CardView></LinearLayout>

User类

public class User {private String name;private int id;public User(String name,int id){this.id = id;this.name = name;}public int getId(){return id;}public String getName(){return name;}
}

适配器UserAdapter.java

public class UserAdapter extends RecyclerView.Adapter<UserAdapter.ViewHolder>{private List<User> users;static class ViewHolder extends RecyclerView.ViewHolder{TextView name;public ViewHolder(View view){super(view);name = (TextView) view.findViewById(R.id.name);}}public UserAdapter(List<User> users){this.users = users;}@Overridepublic ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item,parent,false);ViewHolder holder = new ViewHolder(view);return  holder;}@Overridepublic void onBindViewHolder(ViewHolder holder, int position) {User user = users.get(position);holder.name.setText(user.getName());}@Overridepublic int getItemCount() {return users.size();}
}

MainActivity.java

public class MainActivity extends AppCompatActivity implements SwipeRefreshLayout.OnRefreshListener{private List<User> users = new ArrayList<>();private RecyclerView recyclerView;//private LinearLayout linearLayout;private SwipeRefreshLayout swipeRefreshLayout;private UserAdapter adapter;private static final int UPDATE = 1;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);recyclerView = (RecyclerView) findViewById(R.id.RecyclerView);swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.SwipeRefreshLayout);swipeRefreshLayout.setOnRefreshListener(this);//linearLayout = (LinearLayout) findViewById(R.id.visible_layout);LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);recyclerView.setLayoutManager(linearLayoutManager);initData();}Handler handler = new Handler(){public void handleMessage(Message msg){super.handleMessage(msg);switch(msg.what){case UPDATE:{//linearLayout.setVisibility(View.GONE);swipeRefreshLayout.setRefreshing(false);}break;}}};public void initData(){for(int i=0;i<30;i++){users.add(new User("孔昊" + i,i));}adapter = new UserAdapter(users);recyclerView.setAdapter(adapter);}@Overridepublic void onRefresh() {//linearLayout.setVisibility(View.VISIBLE);swipeRefreshLayout.setRefreshing(true);//swipeRefreshLayout.setProgressViewOffset(false,0,100);handler.sendEmptyMessageDelayed(UPDATE,2000);}
}

效果

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