Android sets different la s for the items in ListView

MainActivity is as follows:

Package cc. testlistview; import java. util. arrayList; import java. util. hashMap; import android. OS. bundle; import android. view. view; import android. widget. adapterView; import android. widget. adapterView. onItemClickListener; import android. widget. listView; import android. app. activity;/*** Demo Description: * sets different la s for ListView items. * For example, in this example, the first Item of ListView shows an image, and all other items display text. ** to achieve this, you need to override the * 1 getView in BaseAdapter. TypeCount () and getItemViewType (int position) methods. * 1.1 specify a total of several different items in getViewTypeCount * return 2 here. * 1.2 In getItemViewType (int position), different types are returned based on different positions. * 2 in the getView () method, set the layout of items for different types * 2.1. the code for the Type in which the current position is obtained is * currentType = getItemViewType (position ); * 2.2 set layout for items based on different types ** reference: * 1 http://blog.csdn.net/yueyue369/article/details/6115552 * 2 http://blog.sina.com.cn/s/blog_5da 93c8f0100wx4v.html * Thank you very much */public class MainActivity extends Activity {private ListView mListView; private HashMap <String, Object> mHashMap; private ArrayList <HashMap <String, Object> mArrayList; @ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. main); init ();} private void init () {mArrayList = new ArrayList <HashMap <St Ring, Object> (); mListView = (ListView) findViewById (R. id. listview); addDataForListView (); mListView. setAdapter (new ListViewAdapter (MainActivity. this, mArrayList, R. layout. othersitem, new String [] {"content"}, new int [] {R. id. textView}); mListView. setOnItemClickListener (new ItemClickListenerImpl ();} private void addDataForListView () {for (int I = 0; I <30; I ++) {mHashMap = new HashMap <String, object> (); m HashMap. put ("content", "This is --->" + I); mArrayList. add (mHashMap) ;}} private class ItemClickListenerImpl implements OnItemClickListener {@ Overridepublic void onItemClick (AdapterView <?> Parent, View view, int position, long arg) {System. out. println ("OnItemClickListener position =" + position );}}}

The ListViewAdapter is as follows:

Package cc. testlistview; import java. util. list; import java. util. map; import android. content. context; import android. view. layoutInflater; import android. view. view; import android. view. view. onClickListener; import android. view. viewGroup; import android. widget. baseAdapter; import android. widget. imageView; import android. widget. textView; public class ListViewAdapter extends BaseAdapter {private List <? Extends Map <String,?> MArrayList; private int resource; private LayoutInflater mLayoutInflater; private final int TYPE_COUNT = 2; private final int FIRST_TYPE = 0; private final int OTHERS_TYPE = 1; private int currentType; public ListViewAdapter (Context context, List <? Extends Map <String,?> Data, int resource, String [] from, int [] to) {this. mArrayList = data; this. resource = resource; mLayoutInflater = (LayoutInflater) context. getSystemService (context. LAYOUT_INFLATER_SERVICE);} @ Overridepublic int getCount () {if (mArrayList = null) {return 0;} else {return (mArrayList. size () + 1) ;}@overridepublic Object getItem (int position) {if (mArrayList = null) {return null;} else {if (position> 0) {return mAr RayList. get (position-1);} else {return mArrayList. get (position + 1) ;}}@ Overridepublic long getItemId (int position) {return position ;} //////////////////////////////////////// /// // @ Overridepublic int getViewTypeCount () {return TYPE_COUNT ;}@ Overridepublic int getItemViewType (int position) {if (position = 0) {return FIRST_TYPE ;}else {return OTHERS_TYPE ;}} ///////////////////////////////////// /////////////// @ Overridepublic View getView (int position, View convertView, ViewGroup parent) {View firstItemView = null; view othersItemView = null; // obtain the current position's Type currentType = getItemViewType (position); System. out. println ("type =" + currentType); if (currentType = FIRST_TYPE) {firstItemView = convertView; FirstItemViewHolder firstItemViewHolder = null; if (firstItemView = null) {System. out. println (" FirstItemView = null "); firstItemView = mLayoutInflater. inflate (R. layout. firstitem, null); firstItemView. setOnClickListener (new OnClickListener () {@ Overridepublic void onClick (View view) {System. out. println ("===== click first item ======") ;}}); firstItemViewHolder = new FirstItemViewHolder (); firstItemViewHolder. imageView = (ImageView) firstItemView. findViewById (R. id. imageView); firstItemView. setTag (firstIte MViewHolder);} else {System. out. println ("firstItemView! = Null "); System. out. println ("111 getClass =" + firstItemView. getTag (). getClass (). toString (); firstItemViewHolder = (FirstItemViewHolder) firstItemView. getTag ();} if (firstItemViewHolder. imageView! = Null) {firstItemViewHolder. imageView. setImageResource (R. drawable. ic_launcher);} convertView = firstItemView;} else {othersItemView = convertView; OthersViewHolder othersViewHolder = null; if (othersItemView = null) {System. out. println ("othersItemView = null"); othersItemView = mLayoutInflater. inflate (R. layout. othersitem, null); othersViewHolder = new OthersViewHolder (); othersViewHolder. textView = (TextView) othe RsItemView. findViewById (R. id. textView); othersItemView. setTag (othersViewHolder);} else {System. out. println ("othersItemView! = Null "); System. out. println ("222 getClass =" + othersItemView. getTag (). getClass (). toString (); othersViewHolder = (OthersViewHolder) othersItemView. getTag ();} if (mArrayList! = Null) {if (othersViewHolder. textView! = Null) {othersViewHolder. textView. setText (String) (mArrayList. get (position-1 ). get ("content") ;}} convertView = othersItemView;} return convertView;} // ViewHolder private class FirstItemViewHolder {ImageView imageView ;} // ViewHolder private class OthersViewHolder {TextView textView;} of other items except the first Item ;}}