與ExpandableListView一起使用時無法選擇RadioButtons

Question

我正在嘗試創建一個可擴展列表視圖，如here所述。我使用下面的適配器列表：

mAdapter = new SimpleExpandableListAdapter(
       this, groupData, 
       android.R.layout.simple_expandable_list_item_1, 
       new String[] { NAME, IS_EVEN }, 
       new int[] { android.R.id.text1, android.R.id.text2 }, 
       childData, 
       android.R.layout.simple_list_item_single_choice, 
       new String[] { NAME, IS_EVEN }, 
       new int[] { android.R.id.text1, android.R.id.text2 } 
       ); 

我的父母和子女有相同的孩子，但我需要能夠從父和另一位家長不同的孩子選擇一個孩子。 單選按鈕出現，但在父列表項中分組。也就是說，您不能從父母和另一個父母中選擇一個孩子。我如何編輯此代碼以允許這樣做？

我得到這個代碼here：

公共MyClass類擴展ExpandableListActivity {

final Context mContext = this; 

public static final String GROUP_ID = "Group"; 
public static final String CHILD_ID = "Child"; 
public static final int GROUPS = 2; 
public static final int CHILDREN = 2; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 

    /* Set up the adapter for the expandable list */ 
    setListAdapter(new SimpleExpandableListAdapter(
      mContext, 
      getGroups(), 
      android.R.layout.simple_expandable_list_item_1, 
      new String[] {GROUP_ID}, new int[] {android.R.id.text1}, 
      getChildren(), 
      android.R.layout.simple_list_item_single_choice, 
      new String[] {CHILD_ID}, new int[] {android.R.id.text1})); 

    /* Get the list, and set the choice mode to multiple - why no WORKY? */ 
    final ExpandableListView listView = getExpandableListView(); 
    listView.setItemsCanFocus(false); 
    listView.setChoiceMode(ExpandableListView.CHOICE_MODE_SINGLE); 
    listView.setOnChildClickListener(cl); 
} 

private OnChildClickListener cl = new OnChildClickListener(){ 

    @Override 
    public boolean onChildClick(ExpandableListView parent, View v, 
      int groupPosition, int childPosition, long id) { 
     int position = groupPosition * (CHILDREN + 1) + childPosition + 1; 
     if (getExpandableListView().isItemChecked(position)) { 
      getExpandableListView().setItemChecked(position, false); 
     } else { 
      getExpandableListView().setItemChecked(position, true); 
     } 
     return false; 
    } 
}; 

/* Generate the names of the groups - not the problem, works fine. */ 
public List<Map<String, String>> getGroups() { 
    List<Map<String, String>> list = new ArrayList<Map<String, String>>(); 
    Map<String, String> map; 
    for (int i = 0; i < GROUPS; ++i) { 
     map = new HashMap<String, String>(); 
     map.put(GROUP_ID, "Group " + i); 
     list.add(map); 
    } 
    return list; 
} 

/* Generates the names of the children - not the problem, works fine. */ 
public List<List<Map<String, String>>> getChildren() { 
    List<List<Map<String, String>>> list = new ArrayList<List<Map<String, String>>>(); 
    List<Map<String, String>> subList = new ArrayList<Map<String, String>>(); 
    Map<String, String> map; 
    for (int j = 0; j < CHILDREN; ++j) { 
     map = new HashMap<String, String>(); 
     map.put(CHILD_ID, "Child " + j); 
     subList.add(map); 
    } 
    for (int i = 0; i < GROUPS; ++i) { 
     list.add(subList); 
    } 
    return list; 
} 

}

Answer 1

private OnChildClickListener cl = new OnChildClickListener(){ 

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

      int position; 
      int setposition =childPosition+1; 

      if(groupPosition ==0) 
      { 

       position = groupPosition * (CHILDREN + 1) + childPosition + 1; 
       if (getExpandableListView().isItemChecked(setposition)) { 
        getExpandableListView().setItemChecked(setposition, false); 
       } else { 
        getExpandableListView().setItemChecked(setposition, true); 
       } 
      } 

      else 
       { 

       position = count+childPosition + 1; 
       setposition =childPosition+2; 

       if (getExpandableListView().isItemChecked(setposition)) { 
        getExpandableListView().setItemChecked(setposition, false); 
       } else { 
        getExpandableListView().setItemChecked(setposition, true); 
       } 
       } 

      System.out.println("is checked? at position:"+ getExpandableListView().isItemChecked(setposition)+position); 


      return false; 
     } 
    };