注意點：1)適配器BaseExpandableListAdapter

2)數據源(數組、集合都行)(重點)

/**

*?Created?by?mb?on?2014/11/18.

*?二級菜單適配器

*/

public?class?MyExpandableListAdapter?extends?BaseExpandableListAdapter?{

private?Context?context;

List?groups;//String?[]?groups?=?{};

List>?childs;?//String?[]?[]?childs?=?{{},{},};

ViewHolder?holder;

public?MyExpandableListAdapter(Context?context,?List?groups,?List>?childs)?{

this.context?=?context;

this.groups?=?groups;

this.childs?=?childs;

}

@Override

public?int?getGroupCount()?{

return?groups.size();

}

@Override

public?int?getChildrenCount(int?groupPosition)?{

return?childs.get(groupPosition).size();

}

@Override

public?Object?getGroup(int?groupPosition)?{

return?groups.get(groupPosition);

}

@Override

public?Object?getChild(int?groupPosition,?int?childPosition)?{

return?childs.get(groupPosition).get(childPosition);

}

@Override

public?long?getGroupId(int?groupPosition)?{

return?groupPosition;

}

@Override

public?long?getChildId(int?groupPosition,?int?childPosition)?{

return?childPosition;

}

@Override

public?boolean?hasStableIds()?{

return?true;

}

@Override

public?View?getGroupView(int?groupPosition,?boolean?isExpanded,?View?convertView1,?ViewGroup?parent)?{

//自定義組視圖

return?convertView1;

}

@Override

public?View?getChildView(int?groupPosition,?int?childPosition,?boolean?isLastChild,?View?convertView,?ViewGroup?parent)?{

//自定義孩子視圖

return?convertView;

}

@Override

public?boolean?isChildSelectable(int?groupPosition,?int?childPosition)?{

return?true;

}

public?static?class?ViewHolder?{

//控件

}

}

事件監聽：

myExpandableListAdapter?=?new?MyExpandableListAdapter(context,?groups,?childs);

expandableListView.setAdapter(myExpandableListAdapter);

expandableListView.setOnGroupClickListener(new?ExpandableListView.OnGroupClickListener()?{

@Override

public?boolean?onGroupClick(ExpandableListView?parent,?View?v,?int?groupPosition,?long?id)?{

int?count?=?myExpandableListAdapter.getChildrenCount(groupPosition);

if?(count?<=?0)?{

activity.showCustomToast("...");

}

return?false;?//?---此處返回true??點擊后不能展開組??具體原因知道的留言

}

});

expandableListView.setOnChildClickListener(new?ExpandableListView.OnChildClickListener()?{

@Override

public?boolean?onChildClick(ExpandableListView?parent,?View?v,?int?groupPosition,?int?childPosition,?long?id)?{

return?false;

}

});

默認展開所有菜單：

for (int i = 0; i < myExpandableListAdapter.getGroupCount(); i++) {

expandableListView.expandGroup(i);

}

總結

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