Swiperefreshlayout与Recyclerview下拉刷新和上拉加载

<?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:id="@+id/activity_main2"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/SwipeRefreshLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent">

</android.support.v7.widget.RecyclerView>
</android.support.v4.widget.SwipeRefreshLayout>

</RelativeLayout>

package com.example.putorefresh;

import android.os.Handler;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.View;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class Main2Activity extends AppCompatActivity {
boolean isLoading;
private List<Map<String, Object>> data = new ArrayList<>();
private MyAdapter adapter = new MyAdapter(this, data);
private Handler handler = new Handler();
private SwipeRefreshLayout swipeRefreshLayout;
private RecyclerView recyclerView;
private int index;
private int lastVisibleItemPosition;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
initView();
initData();
}

private void initView() {
swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.SwipeRefreshLayout);
recyclerView = (RecyclerView) findViewById(R.id.recyclerView);

//这里设置刷新控件的样式颜色

swipeRefreshLayout.setColorSchemeResources(R.color.blueStatus);

//设置第一次进入界面显示刷新控件
swipeRefreshLayout.post(new Runnable() {
@Override
public void run() {
swipeRefreshLayout.setRefreshing(true);
}
});
//设置下拉刷新监听
swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {

//模拟请求网络
handler.postDelayed(new Runnable() {
@Override
public void run() {
data.clear();
index=0;
getData();
}
}, 2000);
}
});
final LinearLayoutManager layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(adapter);

//设置滑动监听
recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {

//滑动状态监听
@Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
super.onScrollStateChanged(recyclerView, newState);
Log.d("test", "StateChanged = " + newState);
if (newState == RecyclerView.SCROLL_STATE_IDLE && lastVisibleItemPosition + 1 == adapter.getItemCount()) {
Log.d("test", "loading executed");

boolean isRefreshing = swipeRefreshLayout.isRefreshing();
if (isRefreshing) {
adapter.notifyItemRemoved(adapter.getItemCount());
return;
}
if (!isLoading) {
isLoading = true;
handler.postDelayed(new Runnable() {
@Override
public void run() {
isLoading = false;
getData();
Log.d("test", "load more completed");
}
}, 1000);
}else{
adapter.notifyItemRemoved(adapter.getItemCount());
return;
}
}

}
//滑动监听
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
Log.d("test", "onScrolled");
//最后可见的item的位置（0，1....adapter.getCount()-1）
lastVisibleItemPosition = layoutManager.findLastVisibleItemPosition();
/*if (lastVisibleItemPosition + 1 == adapter.getItemCount()) {
Log.d("test", "loading executed");

boolean isRefreshing = swipeRefreshLayout.isRefreshing();
if (isRefreshing) {
adapter.notifyItemRemoved(adapter.getItemCount());
return;
}
if (!isLoading) {
isLoading = true;
handler.postDelayed(new Runnable() {
@Override
public void run() {
getData();
Log.d("test", "load more completed");
isLoading = false;
}
}, 1000);
}
}*/
}
});

//添加点击事件
adapter.setOnItemClickListener(new MyAdapter.OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
Log.d("test", "item position = " + position);
}

@Override
public void onItemLongClick(View view, int position) {

}
});
}

public void initData() {
handler.postDelayed(new Runnable() {
@Override
public void run() {
getData();
}
}, 1500);

}

/**
* 获取测试数据
*/
private void getData() {

index++;

if(index>3){
Toast.makeText(Main2Activity.this,"没有更多数据！",Toast.LENGTH_SHORT).show();
//            adapter.notifyDataSetChanged();
//            recyclerView.smoothScrollToPosition(adapter.getItemCount());
swipeRefreshLayout.setRefreshing(false);
adapter.notifyItemRemoved(adapter.getItemCount());
isLoading = true;
return;
}else{
for (int i = 0; i < 6; i++) {
Map<String, Object> map = new HashMap<>();
data.add(map);
}
}

adapter.notifyDataSetChanged();
swipeRefreshLayout.setRefreshing(false);
adapter.notifyItemRemoved(adapter.getItemCount());
}
}

package com.example.putorefresh;

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;

/*
9614
*
* Created by Dell on 2017/2/8.
*/

public class MyAdapter  extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private static final int TYPE_ITEM = 0;
private static final int TYPE_FOOTER = 1;
private Context context;
private List data;

public interface OnItemClickListener {
void onItemClick(View view, int position);

void onItemLongClick(View view, int position);
}

private OnItemClickListener onItemClickListener;

public void setOnItemClickListener(OnItemClickListener onItemClickListener) {
this.onItemClickListener = onItemClickListener;
}

@Override
public int getItemCount() {
return data.size() == 0 ? 0 : data.size() + 1;
}

@Override
public int getItemViewType(int position) {
if (position + 1 == getItemCount()) {
return TYPE_FOOTER;
} else {
return TYPE_ITEM;
}
}

public MyAdapter(Context context, List data) {
this.context = context;
this.data = data;
}

@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
if (viewType == TYPE_ITEM) {
View view = LayoutInflater.from(context).inflate(R.layout.item_notice, parent,
false);
return new ItemViewHolder(view);
} else if (viewType == TYPE_FOOTER) {
View view = LayoutInflater.from(context).inflate(R.layout.item_foot, parent,
false);
return new FootViewHolder(view);
}
return null;
}

@Override
public void onBindViewHolder(final RecyclerView.ViewHolder holder, int position) {
if (holder instanceof ItemViewHolder) {
//holder.tv.setText(data.get(position));
if (onItemClickListener != null) {
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int position = holder.getLayoutPosition();
onItemClickListener.onItemClick(holder.itemView, position);
}
});

holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
int position = holder.getLayoutPosition();
onItemClickListener.onItemLongClick(holder.itemView, position);
return false;
}
});
}
}
}

static class ItemViewHolder extends RecyclerView.ViewHolder {

TextView tv;

public ItemViewHolder(View view) {
super(view);
tv = (TextView) view.findViewById(R.id.tv_date);
}
}

static class FootViewHolder extends RecyclerView.ViewHolder {

public FootViewHolder(View view) {
super(view);
}
}
}

<?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="40dp"
android:gravity="center"
android:orientation="horizontal"
>

<ProgressBar
android:layout_marginRight="6dp"
android:id="@+id/progressBar"
style="?android:attr/progressBarStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center" />

<TextView

android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="加载中" />

</LinearLayout>