ExpandableListActivity 点击时展开一部分的选项
程序实例
/**
* 此文件是activity主界面中的第二个参数被点击时调用的此文件显示的此类调用的界面
*/
public class ExpandableListActivityTest extends ExpandableListActivity
{
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
ExpandableListAdapter adapter = new BaseExpandableListAdapter()
{
int[] logos = new int[]
{
R.drawable.p,
R.drawable.z,
R.drawable.t
};
private String[] armTypes = new String[]
{ "神族兵种", "虫族兵种", "人族兵种"};
private String[][] arms = new String[][]
{
{ "狂战士", "龙骑士", "黑暗圣堂", "电兵" },
{ "小狗", "刺蛇", "飞龙", "自爆飞机" },
{ "机枪兵", "护士MM" , "幽灵" }
};
//获取指定组位置、指定子列表项处的子列表项数据
@Override
public Object getChild(int groupPosition, int childPosition)
{
return arms[groupPosition][childPosition];
}
@Override
public long getChildId(int groupPosition, int childPosition)
{
return childPosition;
}
@Override
public int getChildrenCount(int groupPosition)
{
return arms[groupPosition].length;
}
private TextView getTextView()
{
AbsListView.LayoutParams lp = new AbsListView.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT, 64);
TextView textView = new TextView(ExpandableListActivityTest.this);
textView.setLayoutParams(lp);
textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);
textView.setPadding(36, 0, 0, 0);
textView.setTextSize(20);
return textView;
}
//该方法决定每个子选项的外观
@Override
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent)
{
TextView textView = getTextView();
textView.setText(getChild(groupPosition, childPosition).toString());
return textView;
}
//获取指定组位置处的组数据
@Override
public Object getGroup(int groupPosition)
{
return armTypes[groupPosition];
}
@Override
public int getGroupCount()
{
return armTypes.length;
}
@Override
public long getGroupId(int groupPosition)
{
return groupPosition;
}
//该方法决定每个组选项的外观
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent)
{
LinearLayout ll = new LinearLayout(ExpandableListActivityTest.this);
ll.setOrientation(0);
ImageView logo = new ImageView(ExpandableListActivityTest.this);
logo.setImageResource(logos[groupPosition]);
ll.addView(logo);
TextView textView = getTextView();
textView.setText(getGroup(groupPosition).toString());
ll.addView(textView);
return ll;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition)
{
return true;
}
@Override
public boolean hasStableIds()
{
return true;
}
};
// 设置该窗口显示列表
setListAdapter(adapter);
}
}
效果如下
