Android_ListView上拉加载更多(ListView分页功能)

先上效果图

加载完数据

首先定义一个底部正在加载的布局footer_layout.xml

<?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="match_parent"android:orientation="vertical"><LinearLayoutandroid:id="@+id/load_layout"android:layout_width="match_parent"android:layout_height="wrap_content"android:gravity="center"android:orientation="horizontal"android:paddingBottom="10dip"android:paddingTop="10dip" ><ProgressBarstyle="?android:attr/progressBarStyleSmall"android:layout_width="wrap_content"android:layout_height="wrap_content" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:textSize="16sp"android:textColor="@color/red"android:textStyle="bold"android:text="正在加载..." /></LinearLayout>
</LinearLayout>

自定义ListView---------LoadListView.java

package com.zwb.listviewloaddata.view;import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AbsListView;
import android.widget.ListView;import com.zwb.listviewloaddata.R;/*** 类描述:自定义的ListView* 作者：zwb* 时间：16-5-9 11:21* 邮箱：@163.com*/
public class LoadListView extends ListView implements AbsListView.OnScrollListener {View footer;// 底部布局；int totalItemCount;// 总数量；int lastVisibleItem;// 最后一个可见的item；boolean isLoading;// 正在加载；ILoadListener iLoadListener;public LoadListView(Context context) {super(context);initView(context);}public LoadListView(Context context, AttributeSet attrs) {super(context, attrs);initView(context);}public LoadListView(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);initView(context);}/*** 添加底部加载提示布局到listview** @param context*/private void initView(Context context) {LayoutInflater inflater = LayoutInflater.from(context);footer = inflater.inflate(R.layout.footer_layout, null);footer.findViewById(R.id.load_layout).setVisibility(View.GONE);this.addFooterView(footer);this.setOnScrollListener(this);}@Overridepublic void onScroll(AbsListView view, int firstVisibleItem,int visibleItemCount, int totalItemCount) {// TODO Auto-generated method stubthis.lastVisibleItem = firstVisibleItem + visibleItemCount;this.totalItemCount = totalItemCount;}@Overridepublic void onScrollStateChanged(AbsListView view, int scrollState) {// TODO Auto-generated method stubif (totalItemCount == lastVisibleItem&& scrollState == SCROLL_STATE_IDLE) {if (!isLoading) {isLoading = true;footer.findViewById(R.id.load_layout).setVisibility(View.VISIBLE);// 加载更多iLoadListener.onLoad();}}}/*** 加载完毕*/public void loadComplete(){isLoading = false;footer.findViewById(R.id.load_layout).setVisibility(View.GONE);}public void setInterface(ILoadListener iLoadListener){this.iLoadListener = iLoadListener;}//加载更多数据的回调接口public interface ILoadListener{public void onLoad();}
}

在布局文件中引用自定义的ListView

activity_main.xml

<?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:background="@color/white"android:layout_height="match_parent"tools:context="com.zwb.listviewloaddata.MainActivity"><com.zwb.listviewloaddata.view.LoadListViewandroid:id="@+id/listView"android:layout_width="match_parent"android:layout_height="wrap_content"android:background="@color/white"android:cacheColorHint="#00000000"android:dividerHeight="5dip"/>
</RelativeLayout>

ListView的item资源文件:

item_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"xmlns:card_view="http://schemas.android.com/apk/res-auto"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginLeft="5dp"android:layout_marginRight="5dp"android:layout_centerInParent="true"android:background="@color/white"card_view:cardCornerRadius="8dp"><LinearLayoutandroid:gravity="center_vertical"android:orientation="horizontal"android:background="@color/white"android:layout_width="match_parent"android:layout_height="60dp"><ImageViewandroid:id="@+id/item_img"android:layout_width="50dp"android:layout_height="50dp"android:background="@mipmap/ic_launcher"android:layout_marginLeft="10dp"/><LinearLayoutandroid:layout_marginLeft="10dp"android:orientation="vertical"android:layout_width="wrap_content"android:layout_height="wrap_content"><TextViewandroid:id="@+id/item_name"android:text="我是标题"android:layout_width="wrap_content"android:layout_height="wrap_content" /><TextViewandroid:id="@+id/item_msg"android:text="今天天气还可以啊"android:layout_width="wrap_content"android:layout_height="wrap_content" /></LinearLayout></LinearLayout>
</android.support.v7.widget.CardView>

　接下来就是在Activity中初始化数据和对ListView设置数据

MainActivity.java

package com.zwb.listviewloaddata;import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ListView;import com.zwb.listviewloaddata.adapter.ItemAdapter;
import com.zwb.listviewloaddata.entity.ItemEntity;
import com.zwb.listviewloaddata.view.LoadListView;import java.util.ArrayList;
import java.util.List;public class MainActivity extends AppCompatActivity implements LoadListView.ILoadListener{private ArrayList<ItemEntity> list = new ArrayList<>();private LoadListView listView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//初始化数据的方法getData();showListView(list);}private ItemAdapter adapter;private void showListView(ArrayList<ItemEntity> list) {if (adapter == null){listView = ((LoadListView) findViewById(R.id.listView));listView.setInterface(this);adapter = new ItemAdapter(getApplicationContext() ,list);listView.setAdapter(adapter);}else {adapter.onDateChange(list);}}private void getMoreData() {for (int i = 0; i < 3; i++) {ItemEntity entity = new ItemEntity();entity.setName("新的测试标题");entity.setMsg("我是一条新的测试的内容啊～");list.add(entity);}}private void getData() {for (int i = 0; i < 10; i++) {ItemEntity entity = new ItemEntity();entity.setName("测试标题");entity.setMsg("我是一条测试的内容啊～");list.add(entity);}}@Overridepublic void onLoad() {Handler handler = new Handler();handler.postDelayed(new Runnable() {@Overridepublic void run() {//加载数据getMoreData();//更新ListView的显示showListView(list);//ListView加载完毕listView.loadComplete();}} , 2000);}}

ListView的Adapter

ItemAdapter.java

package com.zwb.listviewloaddata.adapter;import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;import com.zwb.listviewloaddata.R;
import com.zwb.listviewloaddata.entity.ItemEntity;import java.util.ArrayList;
import java.util.List;/*** 类描述:ListView的Adapter* 作者：zwb* 时间：16-5-9 11:06* 邮箱：@163.com*/
public class ItemAdapter extends BaseAdapter{private Context context;private ArrayList<ItemEntity> list;public ItemAdapter(Context context, ArrayList<ItemEntity> list) {this.context = context;this.list = list;}public void onDateChange(ArrayList<ItemEntity> list) {this.list = list;this.notifyDataSetChanged();}@Overridepublic int getCount() {return list.size();}@Overridepublic Object getItem(int position) {return list.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ItemEntity entity = list.get(position);ViewHolder holder;if (convertView == null){holder = new ViewHolder();convertView = LayoutInflater.from(context).inflate(R.layout.item_layout , parent ,false);holder.name = ((TextView) convertView.findViewById(R.id.item_name));holder.msg = ((TextView) convertView.findViewById(R.id.item_msg));convertView.setTag(holder);}else {holder = ((ViewHolder) convertView.getTag());}holder.name.setText(entity.getName());holder.msg.setText(entity.getMsg());return convertView;}class ViewHolder{TextView name;TextView msg;}
}

ok大功告成。

下载链接

Android_ListView分页

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