RecyclerView是Android5.0的新特性用来替换掉ListView和Gridview 总的来说RecyclerView比较灵活 高效 解耦度高 但得自定义分割线和列表点击事件
MainActivity:
package com.example.administrator.mytest;
import android.os.Bundle;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.DefaultItemAnimator;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity implements SwipeRefreshLayout.OnRefreshListener{
private RecyclerView mRecycler;
private myAdapter adapter;
private List data;
private SwipeRefreshLayout mRefreshLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mRecycler= (RecyclerView) findViewById(R.id.my_recycler);
mRefreshLayout = (SwipeRefreshLayout)findViewById(R.id.layout_swipe_refresh);
//设置布局管理器 默认垂直
mRecycler.setLayoutManager(new LinearLayoutManager(this));
// mRecycler.setLayoutManager(new StaggeredGridLayoutManager(3,StaggeredGridLayoutManager.VERTICAL));
//设置添加删除 动画
mRecycler.setItemAnimator(new DefaultItemAnimator());
data=new ArrayList<String>();
data.add("007");
data.add("002");
data.add("1");data.add("2");data.add("3");data.add("4");
data.add("5");data.add("6");data.add("7");data.add("8");
adapter=new myAdapter(this,data);
mRecycler.setAdapter(adapter);
mRefreshLayout.setOnRefreshListener(this);
// 对每个Item进行监听
adapter.setOnItemClickListener(new myAdapter.OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
// Toast.makeText(MainActivity.this, data.get(position)+"="+position, Toast.LENGTH_SHORT).show();
//删除该Item
adapter.ItemRemove(position);
adapter.notifyDataSetChanged();
}
});
}
@Override
public void onRefresh() {
// 处理刷新的数据 比如设置每次刷新就加一条
data.add(0,"Faye");
adapter.notifyDataSetChanged();
mRefreshLayout.setRefreshing(false);
}
}
package com.example.administrator.mytest;
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 android.widget.Toast;
import java.util.List;
public class myAdapter extends RecyclerView.Adapter<myAdapter.MyViewHolder> implements View.OnClickListener{
private List<String> mList;
private Context context;
// 声明 接口的变量
private OnItemClickListener mOnItemClickListener = null;
public myAdapter(Context mcontext,List<String> list){
this.mList=list;
this.context=mcontext;
}
//加载条目布局
@Override
public myAdapter.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view= LayoutInflater.from(context).inflate(R.layout.recycler_item,parent,false);
MyViewHolder holder=new MyViewHolder(view);
view.setOnClickListener(this);
return holder;
}
public void ItemRemove(int position){
mList.remove(position);
notifyItemRemoved(position);
}
//将视图与数据绑定
@Override
public void onBindViewHolder(myAdapter.MyViewHolder holder, int position) {
holder.tv.setText(mList.get(position));
//将position保存在itemView的Tag中,以便点击时进行获取
holder.itemView.setTag(position);
}
@Override
public int getItemCount() {
return mList.size();
}
@Override
public void onClick(View v) {
if (mOnItemClickListener != null) {
//注意这里使用getTag方法获取position
mOnItemClickListener.onItemClick(v,(int)v.getTag());
}
}
class MyViewHolder extends RecyclerView.ViewHolder {
TextView tv;
public MyViewHolder(View itemView) {
super(itemView);
tv= (TextView) itemView.findViewById(R.id.item_tv);
tv.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(context,"我是Item的子控件",Toast.LENGTH_SHORT).show();
}
});
}
}
//暴露给外部用
public void setOnItemClickListener(OnItemClickListener listener) {
this.mOnItemClickListener = listener;
}
//定义接口
public static interface OnItemClickListener{
void onItemClick(View view , int position);
}
}
MainActivity XML文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical"
>
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/layout_swipe_refresh"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/my_recycler"
/>
</android.support.v4.widget.SwipeRefreshLayout>
</LinearLayout>
效果图