Android Adapter Public notation

In the development process, will write a lot of adapter class, many of the public parts, do not need to write every time, can save a lot of time for developers

Extract a Listviewadapter

 Public Abstract classListviewadapter<t>extendsBaseadapter {//to make the subclass accessible, set the property to protected    protectedContext Mcontext; protectedList<t>Mdatas; protectedLayoutinflater Minflater; Private intLayoutID;//The item layout of different ListView can be different, so we need to extract the layout separately.     PublicListviewadapter (context context, list<t> datas,intLayoutID) {         This. Mcontext =context; Minflater=Layoutinflater.from (context);  This. Mdatas =datas;  This. LayoutID =LayoutID; } @Override Public intGetCount () {returnmdatas.size (); } @Override PublicT GetItem (intposition) {        returnMdatas.get (position); } @Override Public LongGetitemid (intposition) {        returnposition; }    /*** Add Data, * *@paramalist*/     Public voidAddData (list<t>alist) {        if(Alist! =NULL&& alist.size () > 0) {mdatas.addall (alist);    } notifydatasetchanged (); }    /*** Get Data * *@return     */     PublicList<t>GetData () {returnMdatas; }    /*** SET Data, * *@paramsList*/     Public voidSetData (list<t>sList)        {mdatas.clear ();    AddData (sList); }    /*** Erase Data*/     Public voidClear () {mdatas.clear (); } @Override PublicView GetView (intposition, View Convertview, ViewGroup parent) {        //Initialize the Viewholder, use the generic viewholder, just like the code to get the Viewholder initialized.Viewholder holder = Viewholder.get (Mcontext, Convertview, parent, layoutid, position);//LayoutID is the layout of a single itemCONVERT (holder, GetItem (position)); returnHolder.getconvertview ();//This line of code should be taken care of.    }    //Publish the Convert method     Public Abstract voidCONVERT (viewholder holder, T t);}

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Reusable Viewholder Code

 Public classViewholder {PrivateSparsearray<view>mviews; Private intmposition; PrivateView Mconvertview;  PublicViewholder (Context context, viewgroup parent,intLayoutID,intposition) {         This. mposition =position;  This. Mviews =NewSparsearray<view>(); Mconvertview= Layoutinflater.from (context). Inflate (LayoutID, parent,false); Mconvertview.settag ( This); }     Public StaticViewholder Get (context context, View Convertview, ViewGroup parent,intLayoutID,intposition) {        if(Convertview = =NULL) {            return NewViewholder (context, parent, layoutid, position); } Else{Viewholder Holder=(Viewholder) Convertview.gettag (); Holder.mposition= position;//Instant Viewholder is reusable, but position remember to update            returnHolder; }    }    /*get control by Viewid*/    //using generic T, return a subclass of view     Public<textendsView> T GetView (intviewId) {View View=Mviews.get (viewId); if(View = =NULL) {View=Mconvertview.findviewbyid (viewId);        Mviews.put (viewId, view); }        return(T) view; }     PublicView Getconvertview () {returnMconvertview; }}

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And look at the adapter class now.

 Public class extends Listviewadapter<string> {    public msgtemplateadapter (context context, list<string > datas) {        Super(context, datas, R.layout.template_list_item);    }    @Override    publicvoid  convert (viewholder holder, String s) {        (TextView) Holder.getview (R.id.name)). SetText (s);    }}

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See this concise code, is not feel the whole people are spirit

Reference: http://www.cnblogs.com/smyhvae/p/4477079.html

"declaration"

Welcome reprint, but please keep the original source of the article

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Article Source: http://www.cnblogs.com/lping/articles/5470781.html

Android Adapter Public notation