ListView和地圖與值列表

Question

有什麼辦法來填充從

Map<Integer, List<Object>> 

的Android的ListView？

我願做這樣的事情：

-Key1

-Value11

-Value12

-Value13

-Key2

-Value21

-Value22

-Value23

我已經試過：

添加適配器列表視圖：

ListAdapter adapterList = new StudiesAdatper(FullWeek.this, studiesMap); 
((ListView) findViewById(R.id.weekListView)).setAdapter(adapterList); 

StudiesAdapter：

private class StudiesAdatper extends BaseAdapter { 

    private Map<Integer, List<Study>> map; 
    private Context context; 
    private int day = 0; 

    public StudiesAdatper(Context context, Map<Integer, List<Study>> map) { 
     this.context = context; 
     this.map = map; 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 

     if (convertView == null) { 
      convertView = LayoutInflater.from(context).inflate(
        R.layout.day_row, null); 
     } 


     if (map.get(day) == null) { 
      day++; 
      return convertView; 
     } 

     Study study = map.get(day++).get(position); 
     /* 
     * Working with study here 
     */ 
     return convertView; 

    } 

    @Override 
    public int getCount() { 
     return map.size(); 
    } 
} 

我認爲主要問題map.size（）返回鍵的數量在這張地圖中的值映射。

我的錯誤：通過使用ExpandableListView

FATAL EXCEPTION: main 
java.lang.IndexOutOfBoundsException: Invalid index 3, size is 3 
at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251) 
at java.util.ArrayList.get(ArrayList.java:304) 
** 

Answer 1

找到解決方案。

http://developer.android.com/reference/android/widget/ExpandableListView.html

下面是示例，這是我容易地圖重新制成。

http://www.mysamplecode.com/2012/10/android-expandablelistview-example.html

Answer 2

List<Study>ls=(List<Study>)map.get(day++); 
if(ls.size()-1>=position){ 
    Study study = map.get(day++).get(position); 
}