Android：ExpandableListView ChildClickListener無法在列表滾動後工作

我創建了ExpandableListView搜索活動，其中顯示3組 - 曲目，藝術家，專輯。當用戶輸入EditText中的文本時，相應的搜索結果顯示在ExpandableListView中。Android：ExpandableListView ChildClickListener無法在列表滾動後工作

問題： 當用戶點擊任何子項時，我想執行一些操作。起初這個功能工作正常，但是當我向上或向下滾動列表時，OnChildClickListener停止工作。沒有孩子被點擊選擇。

這是視圖更新&位置的問題嗎？

注：我使用的是BaseExpandableListAdapter

下面是代碼：（我貼什麼，我認爲是必要的PLZ讓我知道，如果需要其他的部分。）：

protected void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 
      setContentView(R.layout.search); 

      etSearchBar = (EditText) findViewById(R.id.etSearchBar); 
      etSearchBar.addTextChangedListener(this); 

      lvExpSearchResult = (ExpandableListView) findViewById(R.id.lvExpSearchResult); 
      lvExpSearchResult.setGroupIndicator(null); 
      lvExpSearchResult.setChildIndicator(null); 
      lvExpSearchResult.setOnTouchListener(this); 
      lvExpSearchResult.setOnChildClickListener(this); 
     } 

    @Override 
     public boolean onChildClick(ExpandableListView parent, View view, int groupPosition, 
       int childPosition, long id) { 
      lvExpSearchResult.smoothScrollToPosition(groupPosition); 
      Toast.makeText(SearchActivity.this, group[groupPosition], Toast.LENGTH_SHORT).show(); 
      //Toast.makeText(SearchActivity.this, children[groupPosition][childPosition], Toast.LENGTH_LONG).show(); 
      return true; 
     } 

@Override 
    public void onTextChanged(CharSequence s, int start, int before, int count) { 
     if (s.length() > 0) { 
      group = new String[] { "Tracks", "Albums", "Artists" }; 
      ArrayList<String> result = null; 

      result = getQueryResult(MediaStore.Audio.Media.TITLE); 
      result = new Utilities().removeDuplicatesAL(result); 
      String[] tracks = result.toArray(new String[result.size()]); 

      result = getQueryResult(MediaStore.Audio.Media.ALBUM); 
      result = new Utilities().removeDuplicatesAL(result); 
      String[] albums = result.toArray(new String[result.size()]); 

      result = getQueryResult(MediaStore.Audio.Media.ARTIST); 
      result = new Utilities().removeDuplicatesAL(result); 
      String[] artists = result.toArray(new String[result.size()]); 

      children = new String[][] { tracks, albums, artists }; 

      adapter = new SearchAdapter(this, group, children); 
     } else { 
      adapter = new SearchAdapter(this, new String[0], new String[0][0]); 
     } 
    } 

    @Override 
    public void afterTextChanged(Editable s) { 
     lvExpSearchResult.setAdapter(adapter); 
    } 

// BaseExpandableListAdapter code - getGroupView & getChildView 
@Override 
    public View getChildView(int groupPosition, int childPosition, 
      boolean isLastChild, View convertView, ViewGroup parent) { 
     TextView childRow = (TextView) convertView; 
     if (childRow == null) { 
      LayoutInflater inflator = (LayoutInflater) context 
        .getSystemService(context.LAYOUT_INFLATER_SERVICE); 
      try { 
       childRow = (TextView) inflator.inflate(
         android.R.layout.simple_expandable_list_item_1, null); 
      } catch (Exception e) { 
       Toast.makeText(context, e.toString(), Toast.LENGTH_SHORT) 
         .show(); 
      } 
     } 
     childRow.setText(children[groupPosition][childPosition]); 
     return childRow; 
    } 

@Override 
    public View getGroupView(int groupPosition, boolean isExpanded, 
      View convertView, ViewGroup parent) { 
     TextView headerRow = (TextView) convertView; 
     if (headerRow == null) { 
      LayoutInflater inflator = (LayoutInflater) context 
        .getSystemService(context.LAYOUT_INFLATER_SERVICE); 
      headerRow = (TextView) inflator.inflate(
        android.R.layout.simple_expandable_list_item_1, null); 
     } 
     headerRow.setTypeface(Typeface.DEFAULT_BOLD); 
     headerRow.setText(group[groupPosition]); 

     ExpandableListView eLV = (ExpandableListView)parent; 
     eLV.expandGroup(groupPosition); 

     return headerRow; 
    }

來源

2012-07-31 reiley

當你在EditText中輸入文本會發生什麼？也許你每次更改文本時都會初始化你的列表？嘗試使用自定義的ExpandableList並覆蓋getChildView並在其上設置點擊監聽器。 – 2012-07-31 09:02:54

是的，每次用戶鍵入一個新列表時，都會傳遞給一個自定義的'BaseExpandListListAdapter'並且結果會被更新。我在'EditText'上添加了一個'addTextChangeListener'，它調用適配器並顯示結果。代碼已更新。 – reiley 2012-07-31 09:20:03

嘗試在你的適配器的getChildView方法的childView上設置onClickListener，像這樣https://github.com/gobozov/myshows/blob/master/src/ru/myshows/fragments/EpisodesFragment.java – 2012-07-31 09:27:23

我認爲你的孩子的方法問題，只是這個代碼實現並試用這個，

@Override 
    public boolean isChildSelectable(int groupPosition, int childPosition) { 
     return ; 
     // false = default and do not get click 
     // true = get the focus of child and got the click 
    }

來源

2013-06-29 10:16:27 puthawala

Android：ExpandableListView ChildClickListener無法在列表滾動後工作

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