Viewholder General concise notation in Android

 Public classViewholder {//I added a generic return type to reduce the casting noise in client code@SuppressWarnings ("Unchecked")      Public Static<textendsView> T Get (view view,intID) {Sparsearray<View> Viewholder = (sparsearray<view>) View.gettag (); if(Viewholder = =NULL) {Viewholder=NewSparsearray<view>();         View.settag (Viewholder); } View Childview=viewholder.get (ID); if(Childview = =NULL) {Childview=View.findviewbyid (ID);         Viewholder.put (ID, Childview); }         return(T) Childview; }}

Use the following methods:

@Override PublicView GetView (intposition, View Convertview, ViewGroup parent) {       if(Convertview = =NULL) {Convertview=Layoutinflater.from (context). Inflate (R.layout.banana_phone, parent,false); } ImageView Bananaview=Viewholder.get (Convertview, R.id.banana); TextView Phoneview=Viewholder.get (Convertview, R.id.phone); Bananaphone Bananaphone=GetItem (position);     Phoneview.settext (Bananaphone.getphone ());       Bananaview.setimageresource (Bananaphone.getbanana ()); returnConvertview;}

You can add this class to a common class library once and for all.