ListView上拉加载更多(分页加载)

[code]publicclassLoadListViewextendsListViewimplementsAbsListView.OnScrollListener{

privateViewfoot;//底部加载布局

privateinttotalItemCount;//总数量

privateintlastVisiableItem;//最后一个可见的item

privatebooleanisLoading;//是否正在加载

privateLoadListererloadListerer;

publicLoadListView(Contextcontext){

super(context);

initView(context);

}

publicLoadListView(Contextcontext,AttributeSetattrs){

super(context,attrs);

initView(context);

}

publicLoadListView(Contextcontext,AttributeSetattrs,intdefStyleAttr){

super(context,attrs,defStyleAttr);

initView(context);

}

/**

*添加底部加载布局到ListView

*@paramcontext

*/

privatevoidinitView(Contextcontext){

LayoutInflaterinflater=LayoutInflater.from(context);

foot=inflater.inflate(R.layout.foot_layout,null);

foot.findViewById(R.id.load_layput).setVisibility(View.GONE);

this.addFooterView(foot);

this.setOnScrollListener(this);

}

@Override

publicvoidonScrollStateChanged(AbsListViewview,intscrollState){

if(totalItemCount==lastVisiableItem&&scrollState==SCROLL_STATE_IDLE){

if(!isLoading){

isLoading=true;

//加载更多数据

foot.findViewById(R.id.load_layput).setVisibility(View.VISIBLE);

loadListerer.load();//调用MainActivity的load方法

}

}

}

publicvoidloadingComplete(){

isLoading=false;

foot.findViewById(R.id.load_layput).setVisibility(View.GONE);

}

/**

*

*@paramview

*@paramfirstVisibleItem第一个可见的item

*@paramvisibleItemCount可见item的数量

*@paramtotalItemCountitem的总数

*/

@Override

publicvoidonScroll(AbsListViewview,intfirstVisibleItem,intvisibleItemCount,inttotalItemCount){

lastVisiableItem=firstVisibleItem+visibleItemCount;

this.totalItemCount=totalItemCount;

}

publicvoidsetInterface(LoadListererloadListerer){

this.loadListerer=loadListerer;//拿到MainActivity的接口

}

publicinterfaceLoadListerer{

publicvoidload();

}

[code]publicclassMainActivityextendsActionBarActivityimplementsLoadListView.LoadListerer{

privateLoadListViewlistView;

privateArrayAdapter<String>adapter;

privateArrayList<String>arrayList;

@Override

protectedvoidonCreate(BundlesavedInstanceState){

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

arrayList=newArrayList<String>();

addDate();

listView=(LoadListView)findViewById(R.id.lv);

listView.setInterface(this);//传入接口

adapter=newArrayAdapter<String>(MainActivity.this,android.R.layout.simple_list_item_1,arrayList);

listView.setAdapter(adapter);

}

privatevoidaddDate(){

for(inti=0;i<50;i++){

arrayList.add(i+"");

}

}

privatevoidloadMoreDate(){

for(inti=0;i<5;i++){

arrayList.add(i*100+"");

}

}

@Override

publicvoidload(){

newHandler().postDelayed(newRunnable(){

@Override

publicvoidrun(){

//获取更多数据

loadMoreDate();

//更新界面

adapter.notifyDataSetChanged();

//加载完毕隐藏loading布局

listView.loadingComplete();

}

},5000);

}

}

[code]<RelativeLayoutxmlns: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"

tools:context=".MainActivity">

<com.example.administrator.listviewfenye.LoadListView

android:id="@+id/lv"

android:layout_width="match_parent"

android:layout_height="match_parent"/>

</RelativeLayout>

[code]<?xmlversion="1.0"encoding="utf-8"?>

<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="vertical"

android:layout_width="match_parent"

android:layout_height="match_parent">

<LinearLayout

android:id="@+id/load_layput"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:orientation="horizontal"

android:paddingBottom="10dp"

android:paddingTop="10dp"

>

<ProgressBar

android:layout_marginLeft="50dp"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

style="?android:attr/progressBarStyleSmall"

/>

<TextView

android:layout_marginLeft="50dp"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="正在加载中..."/>

</LinearLayout>

</LinearLayout>