擴充的ListView執行個體

            今天從網上看了個擴充的listView的例子，感覺還蠻炫，自己也試著做了下。

           由於比較簡單，所有就直接上代碼：

         

public class ExtendedListView extends ExpandableListActivity {@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);MyExpandableListAdapter adapter=new MyExpandableListAdapter();setListAdapter(adapter);}public class MyExpandableListAdapter extends BaseExpandableListAdapter{        public String[] groups={"我的好友","大學同學","高中同學"};        public String[][] childrens={{"小張","小李","小麗","向明"},{"向明","向明","向明","向明"},{"向明","向明","向明","向明"}};public Object getChild(int groupPosition, int childPosition) {// TODO Auto-generated method stubreturn childrens[groupPosition][childPosition];}public long getChildId(int groupPosition, int childPosition) {// TODO Auto-generated method stubreturn childPosition;}public View getChildView(int groupPosition, int childPosition,boolean isLastChild, View convertView, ViewGroup parent) {// TODO Auto-generated method stubTextView textView=getGenericView();    textView.setText(getChild(groupPosition, childPosition).toString());return textView;}//建立一個TextView public TextView getGenericView() {            // Layout parameters for the ExpandableListView            AbsListView.LayoutParams lp = new AbsListView.LayoutParams(                    ViewGroup.LayoutParams.MATCH_PARENT, 64);            TextView textView = new TextView(ExtendedListView.this);            textView.setLayoutParams(lp);            // Center the text vertically            textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);            // Set the text starting position            textView.setPadding(36, 0, 0, 0);            return textView;        }        public int getChildrenCount(int groupPosition) {// TODO Auto-generated method stubreturn childrens[groupPosition].length;}public Object getGroup(int groupPosition) {// TODO Auto-generated method stubreturn groups[groupPosition];}public int getGroupCount() {// TODO Auto-generated method stubreturn groups.length;}public long getGroupId(int groupPosition) {// TODO Auto-generated method stubreturn groupPosition;}public View getGroupView(int groupPosition, boolean isExpanded,View convertView, ViewGroup parent) {// TODO Auto-generated method stubTextView textView = getGenericView();            textView.setText(getGroup(groupPosition).toString());return textView;}public boolean hasStableIds() {// TODO Auto-generated method stubreturn true;}public boolean isChildSelectable(int groupPosition, int childPosition) {// TODO Auto-generated method stubreturn true;}}}

      看一下運行在模擬器上的效果：