企业互联网服务.docx

企业互联网服务.docx

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企业互联网服务

importandroid.content.Context;

importandroid.util.AttributeSet;

importandroid.view.MotionEvent;

importandroid.view.View;

importandroid.view.ViewTreeObserver.OnGlobalLayoutListener;

importandroid.view.animation.DecelerateInterpolator;

importandroid.widget.AbsListView;

importandroid.widget.AbsListView.OnScrollListener;

importandroid.widget.ListAdapter;

importandroid.widget.ListView;

importandroid.widget.RelativeLayout;

importandroid.widget.Scroller;

importandroid.widget.TextView;

importcom.insthub.ecmobile.R;

importandroid.os.Message;

importandroid.os.Handler;

publicclassXListViewextendsListViewimplementsOnScrollListener{

privatefloatmLastY=-1;//saveeventy

privateScrollermScroller;//usedforscrollback

privateOnScrollListenermScrollListener;//user'sscrolllistener

//theinterfacetotriggerrefreshandloadmore.

privateIXListViewListenermListViewListener;

//--headerview

privateXListViewHeadermHeaderView;

//headerviewcontent,useittocalculatetheHeader'sheight.Andhideit

//whendisablepullrefresh.

privateRelativeLayoutmHeaderViewContent;

privateTextViewmHeaderTimeView;

privateintmHeaderViewHeight;//headerview'sheight

privatebooleanmEnablePullRefresh=true;

privatebooleanmPullRefreshing=false;//isrefreashing.

//--footerview

privateXListViewFootermFooterView;

privatebooleanmEnablePullLoad;

privatebooleanmPullLoading;

privatebooleanmIsFooterReady=false;

//totallistitems,usedtodetectisatthebottomoflistview.

privateintmTotalItemCount;

//formScroller,scrollbackfromheaderorfooter.

privateintmScrollBack;

privatefinalstaticintSCROLLBACK_HEADER=0;

privatefinalstaticintSCROLLBACK_FOOTER=1;

privatefinalstaticintSCROLL_DURATION=400;//scrollbackduration

privatefinalstaticintPULL_LOAD_MORE_DELTA=50;//whenpullup>=50px

//atbottom,trigger

//loadmore.

privatefinalstaticfloatOFFSET_RADIO=1.8f;//supportiOSlikepull

//feature.

privateintid;

/**

*@paramcontext

*/

publicXListView（Contextcontext）{

super（context）;

initWithContext（context）;

}

publicXListView（Contextcontext,AttributeSetattrs）{

super（context,attrs）;

initWithContext（context）;

}

publicXListView（Contextcontext,AttributeSetattrs,intdefStyle）{

super（context,attrs,defStyle）;

initWithContext（context）;

}

privatevoidinitWithContext（Contextcontext）{

mScroller=newScroller（context,newDecelerateInterpolator（））;

//XListViewneedthescrollevent,anditwilldispatchtheeventto

//user'slistener（asaproxy）.

super.setOnScrollListener（this）;

//initheaderview

mHeaderView=newXListViewHeader（context）;

mHeaderViewContent=（RelativeLayout）mHeaderView

.findViewById（R.id.xlistview_header_content）;

mHeaderTimeView=（TextView）mHeaderView

.findViewById（R.id.xlistview_header_time）;

addHeaderView（mHeaderView）;

//initfooterview

mFooterView=newXListViewFooter（context）;

//initheaderheight

mHeaderView.getViewTreeObserver（）.addOnGlobalLayoutListener（

newOnGlobalLayoutListener（）{

@Override

publicvoidonGlobalLayout（）{

mHeaderViewHeight=mHeaderViewContent.getHeight（）;

getViewTreeObserver（）

.removeGlobalOnLayoutListener（this）;

}

}）;

}

@Override

publicvoidsetAdapter（ListAdapteradapter）{

//makesureXListViewFooteristhelastfooterview,andonlyaddonce.

if（mIsFooterReady==false）{

mIsFooterReady=true;

addFooterView（mFooterView）;

}

super.setAdapter（adapter）;

}

/**

*enableordisablepulldownrefreshfeature.

*

*@paramenable

*/

publicvoidsetPullRefreshEnable（booleanenable）{

mEnablePullRefresh=enable;

if（!

mEnablePullRefresh）{//disable,hidethecontent

mHeaderViewContent.setVisibility（View.INVISIBLE）;

}else{

mHeaderViewContent.setVisibility（View.VISIBLE）;

}

}

/**

*enableordisablepulluploadmorefeature.

*

*@paramenable

*/

publicvoidsetPullLoadEnable（booleanenable）{

mEnablePullLoad=enable;

if（!

mEnablePullLoad）{

mFooterView.hide（）;

mFooterView.setOnClickListener（null）;

}else{

mPullLoading=false;

mFooterView.show（）;

mFooterView.setState（XListViewFooter.STATE_NORMAL）;

//both"pullup"and"click"willinvokeloadmore.

mFooterView.setOnClickListener（newOnClickListener（）{

@Override

publicvoidonClick（Viewv）{

startLoadMore（）;

}

}）;

}

}

/**

*stoprefresh,resetheaderview.

*/

publicvoidstopRefresh（）{

if（mPullRefreshing==true）{

mPullRefreshing=false;

resetHeaderHeight（）;

}

}

/**

*stoploadmore,resetfooterview.

*/

publicvoidstopLoadMore（）{

if（mPullLoading==true）{

mPullLoading=false;

mFooterView.setState（XListViewFooter.STATE_NORMAL）;

}

mFooterView.setEnabled（true）;

}

/**

*setlastrefreshtime

*

*@param