详细参考：http://blog.csdn.net/lmj623565791/article/details/45059587
- RecyclerView 控件用于在有限的窗口中展示大量数据集，类似：ListView、GridView。
- 整体上看 RecyclerView 架构，提供了一种插拔式的体验，高度的解耦，异常的灵活，通过设置它提供的不同 LayoutManager，ItemDecoration , ItemAnimator 实现令人瞠目的效果。
- 通过布局管理器** LayoutManager**，控制其显示的方式。
- 通过 ItemDecoration，控制 Item 间的间隔（可绘制）。
- 通过 ItemAnimator，控制 Item 增删的动画。
- 控制点击、长按事件，要自己写。
- 基本步骤：
mRecyclerView = findView(R.id.id_recyclerview);
//设置布局管理器
mRecyclerView.setLayoutManager(layout);
//设置adapter
mRecyclerView.setAdapter(adapter);
//设置Item增加、移除动画
mRecyclerView.setItemAnimator(new DefaultItemAnimator());
//添加分割线
mRecyclerView.addItemDecoration(new DividerItemDecoration
(getActivity(), DividerItemDecoration.HORIZONTAL_LIST));
一、简单使用：
dependencies {
......
compile 'com.android.support:design:24.2.0'
}
<?xml version="1.0" encoding="utf-8"?>
<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: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.ttt.recyclerviewtest.MainActivity">
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="50dp">
<TextView
android:id="@+id/recycler_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
MainActivity：
package com.ttt.recyclerviewtest;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private RecyclerView recyclerView;
private List<String> data;
private MyRecyclerAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
data=new ArrayList<>();
for(int i=0;i<20;i++){
data.add(""+i);
}
recyclerView=(RecyclerView)findViewById(R.id.recycler_view);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
adapter=new MyRecyclerAdapter(this,data);
recyclerView.setAdapter(adapter);
}
}
MyRecyclerAdapter：
package com.ttt.recyclerviewtest;
import android.content.Context;
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.List;
public class MyRecyclerAdapter extends RecyclerView.Adapter<MyRecyclerAdapter.MyViewHolder>{
private Context context;
private List<String> list;
public MyRecyclerAdapter(Context context, List<String> list){
super();
this.context=context;
this.list=list;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view= LayoutInflater.from(context).
inflate(R.layout.recycler_view_item,parent,false);
return new MyViewHolder(view);
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
holder.textView.setText(list.get(position));
}
}
@Override
public int getItemCount() {
return list.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder{
private TextView textView;
public MyViewHolder(View itemView) {
super(itemView);
textView=(TextView)itemView.findViewById(R.id.recycler_text);
}
}
}
二、布局管理器 LayoutManager
1. LinearLayoutManager 线性布局管理器，支持横向、纵向。
recyclerView.setLayoutManager(new LinearLayoutManager(this));
2. GridLayoutManager 网格布局管理器。
recyclerView.setLayoutManager(new GridLayoutManager(this,4));
3. StaggeredGridLayoutManager 瀑布流式布局管理器。
recyclerView.setLayoutManager(new StaggeredGridLayoutManager(4, StaggeredGridLayoutManager.VERTICAL));
三、分割线 ItemDecoration
四、增删动画 ItemAnimator
五、点击和长按事件
- 可以通过 recyclerView.addOnItemTouchListener 去监听然后去判断手势。比较麻烦。
- 也可以通过** adapter 中自己去提供回调**，这里选择后者。
-
RecyclerViewAdapter 中设置回调接口 MyOnItemClickListener：
public interface MyOnItemClickListener{
void onItemClick(View view,int position);
void onItemLongClick(View view,int position);
}
-
onBindViewHolder() 方法中给 ViewHolder 的 view 设置点击事件，在点击事件中回调 MyOnItemClickListener 中的方法。
final int pos=holder.getAdapterPosition();
if(myOnItemClickListener!=null){
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
myOnItemClickListener.onItemClick(v,pos);
}
});
holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
myOnItemClickListener.onItemLongClick(v,pos);
return false;
}
});
}
-
使用时给 adapter 设置 MyOnItemClickListener 并复写回调方法，设置想要的点击事件。
adapter.setMyOnItemClickListener(new MyRecyclerAdapter.MyOnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
Toast.makeText(MainActivity.this, "click "+position, Toast.LENGTH_SHORT).show();
}
@Override
public void onItemLongClick(View view, int position) {
Toast.makeText(MainActivity.this, "long click "+position, Toast.LENGTH_SHORT).show();
}
});
MainActivity：
package com.ttt.recyclerviewtest;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private RecyclerView recyclerView;
private List<String> data;
private MyRecyclerAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
data=new ArrayList<>();
for(int i=0;i<20;i++){
data.add(""+i);
}
recyclerView=(RecyclerView)findViewById(R.id.recycler_view);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
adapter=new MyRecyclerAdapter(this,data);
+ adapter.setMyOnItemClickListener(new MyRecyclerAdapter.MyOnItemClickListener() {
+ @Override
+ public void onItemClick(View view, int position) {
+ Toast.makeText(MainActivity.this, "click "+position, Toast.LENGTH_SHORT).show();
+ }
+
+ @Override
+ public void onItemLongClick(View view, int position) {
+ Toast.makeText(MainActivity.this, "long click "+position, Toast.LENGTH_SHORT).show();
+ }
+ });
recyclerView.setAdapter(adapter);
}
}
MyRecyclerAdapter：
package com.ttt.recyclerviewtest;
import android.content.Context;
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.List;
public class MyRecyclerAdapter extends RecyclerView.Adapter<MyRecyclerAdapter.MyViewHolder>{
private Context context;
private List<String> list;
+ private MyOnItemClickListener myOnItemClickListener;
public MyRecyclerAdapter(Context context, List<String> list){
super();
this.context=context;
this.list=list;
}
+ public void setMyOnItemClickListener(MyOnItemClickListener myOnItemClickListener){
+ this.myOnItemClickListener=myOnItemClickListener;
+ }
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view= LayoutInflater.from(context).
inflate(R.layout.recycler_view_item,parent,false);
return new MyViewHolder(view);
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
holder.textView.setText(list.get(position));
+ final int pos=holder.getAdapterPosition();
+ if(myOnItemClickListener!=null){
+ holder.itemView.setOnClickListener(new View.OnClickListener() {
+ @Override
+ public void onClick(View v) {
+ myOnItemClickListener.onItemClick(v,pos);
+ }
+ });
+ holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {
+ @Override
+ public boolean onLongClick(View v) {
+ myOnItemClickListener.onItemLongClick(v,pos);
+ return false;
+ }
+ });
+ }
}
@Override
public int getItemCount() {
return list.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder{
private TextView textView;
public MyViewHolder(View itemView) {
super(itemView);
textView=(TextView)itemView.findViewById(R.id.recycler_text);
}
}
+ public interface MyOnItemClickListener{
+ void onItemClick(View view,int position);
+ void onItemLongClick(View view,int position);
+ }
}
