Android实现简单的分页效果
本文实例为大家分享了Android分页效果的具体代码，供大家参考，具体内容如下
1.实现分页最主要的就是封装分页代码，然后在按钮里实现相关的操作
/**
*分页工具
*
*@ProjectApp_Page
*@Packagecom.android.dividepage
*@authorchenlin
*@version1.0
*@Date2012年6月2日
*@NoteTODO
*@param<T>
*/
publicclassPageHelper<T>{
privateList<T>allData;//所有数据
privateintperPage=10;//每页条目
privateintcurrentPage=1;//当前页
privateintpageNum=1;//页码
privateList<T>childData;//子数据
privateintallNum;//总共条目
publicPageHelper(List<T>datas,intperPage){
this.allData=datas;
if(perPage>0)
this.perPage=perPage;
//如果数据大于10条
if(allData!=null&&allData.size()>perPage){
childData=allData.subList(0,perPage-1);
}
allNum=allData.size();
//如果总数能除断perPage，页数就是余数，否则+1
pageNum=allNum%perPage==0?(allNum/perPage):(allNum/perPage+1);
}
publicintgetCount(){
returnthis.allNum;
}
publicintgetCurrentPage(){
returnthis.currentPage;
}
publicintgetPageNum(){
returnthis.pageNum;
}
publicintgetPerPage(){
returnthis.perPage;
}
publicvoidgotoPage(intn){//页面跳转
currentPage=n>pageNum?pageNum:(n<1?1:n);
}
publicbooleanhasNextPage(){//是否有下一页
returncurrentPage<pageNum;
}
publicbooleanhasPrePage(){//是否有前一页
returncurrentPage>1;
}
publicvoidheadPage(){//第一页
currentPage=1;
}
publicvoidlastPage(){//最后一页
currentPage=pageNum;
}
publicvoidnextPage(){//下一页
currentPage=hasNextPage()?currentPage+1:pageNum;
}
publicvoidprePage(){//前一页
currentPage=hasPrePage()?currentPage-1:1;
}
publicvoidsetPerPage(intperPage){//设置上一页面
this.perPage=perPage;
}
/**
*获得当前数据
*@return
*/
publicList<T>currentList(){
if(currentPage==1){
childData=allData.subList(0,perPage);
}elseif(currentPage==pageNum){
childData=allData.subList(perPage*(pageNum-1),allNum);
}else{
childData=allData.subList(perPage*(currentPage-1),perPage*currentPage);
}
returnchildData;
}
publicvoidsetCurrentPage(intcurrentPage){
this.currentPage=currentPage;
}
}
2、主页里我根据tab标签把按钮设置进去，然后在click里方法读取，最后根据tag标签就可判断是哪个按钮点击了
/**
*分页主页
*@ProjectApp_Page
*@Packagecom.android.dividepage
*@authorchenlin
*@version1.0
*@Date2012年6月2日
*@NoteTODO
*/
publicclassMainActivityextendsActivityimplementsOnClickListener{
privateListViewmListView;
//分页按钮
privateButtonmBtnPrePage,mBtnNextPage,mBtnPreItem,mBtnNextItem;
//显示分页信息
privateTextViewmTvPageNo;
//数据实现
privatePageHelper<String>mPageDaoImpl;
privateDataAdaptermAdapter;
privateList<String>mDatas;
//被选着的索引
privateintselectIndex=0;
privatestaticfinalintPREPAGE=0;
privatestaticfinalintNEXTPAGE=1;
privatestaticfinalintPREITEM=2;
privatestaticfinalintNEXTITEM=3;
@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initViews();
initDatas();
}
privatevoidinitDatas(){
//从资源文件里读数据
mDatas=Arrays.asList(getResources().getStringArray(R.array.channellist));
//每次读8条数据
mPageDaoImpl=newPageHelper<String>(mDatas,8);
mAdapter=newDataAdapter(this,mPageDaoImpl.currentList());
mListView.setAdapter(mAdapter);
//设置当前页码与总页码
mTvPageNo.setText(mPageDaoImpl.getCurrentPage()+"/"+mPageDaoImpl.getPageNum());
}
privatevoidinitViews(){
mListView=(ListView)findViewById(R.id.page_list);
mBtnPrePage=(Button)findViewById(R.id.pre_page);
mBtnPrePage.setTag(PREPAGE);
mBtnPrePage.setOnClickListener(this);
mBtnNextPage=(Button)findViewById(R.id.next_page);
mBtnNextPage.setTag(NEXTPAGE);
mBtnNextPage.setOnClickListener(this);
mBtnPreItem=(Button)findViewById(R.id.pre_item);
mBtnPreItem.setTag(PREITEM);
mBtnPreItem.setOnClickListener(this);
mBtnNextItem=(Button)findViewById(R.id.next_item);
mBtnNextItem.setTag(NEXTITEM);
mBtnNextItem.setOnClickListener(this);
mTvPageNo=(TextView)findViewById(R.id.pagenum);
}
@Override
publicvoidonClick(Viewv){
finalintflag=(Integer)v.getTag();
switch(flag){
casePREPAGE://首页
headPage();
break;
caseNEXTPAGE://尾页
lastPage();
break;
casePREITEM://上一条
prePage();
break;
caseNEXTITEM://下一条
nextPage();
break;
}
}
privatevoidprePage(){
if(selectIndex==0){
if(mPageDaoImpl.getCurrentPage()>=1){
mPageDaoImpl.prePage();
}
mAdapter.setData(mPageDaoImpl.currentList());
mListView.setSelection(mAdapter.getCount()-1);
mTvPageNo.setText(mPageDaoImpl.getCurrentPage()+"/"+mPageDaoImpl.getPageNum());
}else{
return;
}
}
privatevoidnextPage(){
if(mPageDaoImpl.getCurrentPage()<=mPageDaoImpl.getPageNum()){
mPageDaoImpl.nextPage();
}
mAdapter.setData(mPageDaoImpl.currentList());
mListView.setSelection(0);
mTvPageNo.setText(mPageDaoImpl.getCurrentPage()+"/"+mPageDaoImpl.getPageNum());
}
privatevoidlastPage(){
if(mPageDaoImpl.getCurrentPage()!=mPageDaoImpl.getPageNum()){
mPageDaoImpl.lastPage();
}
mAdapter.setData(mPageDaoImpl.currentList());
mTvPageNo.setText(mPageDaoImpl.getCurrentPage()+"/"+mPageDaoImpl.getPageNum());
}
privatevoidheadPage(){
if(mPageDaoImpl.getCurrentPage()!=1){
mPageDaoImpl.headPage();
}
mAdapter.setData(mPageDaoImpl.currentList());
mTvPageNo.setText(mPageDaoImpl.getCurrentPage()+"/"+mPageDaoImpl.getPageNum());
}
}
3、适配器代码，太简单了，我就不说了
publicclassDataAdapterextendsBaseAdapter{
privateContextmContext;
privateList<String>mDatas;
publicDataAdapter(Contextcontext,List<String>datas){
this.mContext=context;
this.mDatas=datas;
}
@Override
publicintgetCount(){
returnmDatas==null?0:mDatas.size();
}
@Override
publicObjectgetItem(intposition){
returnmDatas==null?null:mDatas.get(position);
}
@Override
publiclonggetItemId(intposition){
returnposition;
}
@Override
publicViewgetView(intposition,ViewconvertView,ViewGroupparent){
ViewHoldermHolder;
if(convertView==null){
convertView=LayoutInflater.from(mContext).inflate(R.layout.channel_item,parent,false);
mHolder=newViewHolder();
mHolder.nameView=(TextView)convertView.findViewById(R.id.channel_name);
convertView.setTag(mHolder);
}
mHolder=(ViewHolder)convertView.getTag();
mHolder.nameView.setText(mDatas.get(position));
returnconvertView;
}
staticclassViewHolder{
publicTextViewnameView;
}
publicvoidsetData(List<String>datas){
mDatas=datas;
notifyDataSetChanged();
}
}
4、代码下载：http://xiazai.jb51.net/201611/yuanma/AndroidAppPage(jb51.net).rar
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。