ExpandableListView不会追加孩子

我有一个包含电影信息的ExpandableListView。这些组是电影标题，孩子是与这部电影相关的媒体（全部包含在电影对象中）。展示ExpandableListView，但仅限于组，并且当我点击它们时，列表不会展开。我调试它，我发现getChildView永远不会执行。我正在寻找，但我不知道为什么这个方法没有被执行。ExpandableListView不会追加孩子

ArrayList<MovieMock> movies; 
@Override 
public void onCreate(Bundle savedInstanceState){  
    super.onCreate(savedInstanceState); 

    setContentView(R.layout.savedsyncs_content); 

    ExpandableListView l = (ExpandableListView) findViewById(R.id.ExpandableList_Content); 

    laodMockedList(); 

    ContentExpandableListAdapter adapter = new ContentExpandableListAdapter(this, movies); 
    l.setAdapter(adapter); 
} 

public class ContentExpandableListAdapter extends BaseExpandableListAdapter { 
private ArrayList<MovieMock> movies;  
private Context context; 

/*ExpandableList containing the movies from SavedSyncs. The groups are the movie's titles, the childs are 
* the movie media and information. 
* */ 
public ContentExpandableListAdapter(Context context, ArrayList<MovieMock> movies){ 
    this.context = context; 
    this.movies = movies; 
} 

@Override 
public boolean areAllItemsEnabled() 
{ 
    return true; 
} 

@Override 
public MovieMock getChild(int groupPosition, int childPosition) { 
    // TODO Auto-generated method stub 
    Log.d("CHILD", "getChild : " + groupPosition); 
    return movies.get(groupPosition); 
} 

@Override 
public long getChildId(int arg0, int arg1) { 
    // TODO Auto-generated method stub 
    //return Long.parseLong(movies.get(arg0).getId()); 
    return arg1; 
} 

@Override 
public View getChildView(int groupPosition, int childPosition, boolean isLastChild,View convertView, ViewGroup parent) { 
    MovieMock child = (MovieMock)getChild(groupPosition, childPosition); 
    Log.d("DEBUG", "Entro al hijo") ; 
    if (convertView == null) { 
     LayoutInflater infalInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     convertView = infalInflater.inflate(R.layout.expandablelistcontent_child, null); 
    } 

    TextView audiotxt = (TextView) convertView.findViewById(R.id.audio_text); 
    audiotxt.setText(child.getAudio()); 

    /*TextView videotxt = (TextView) convertView.findViewById(R.id.video_text); 
    videotxt.setText(child.getAudio());*/ 

    return convertView; 
} 

@Override 
public int getChildrenCount(int groupPosition) { 
    // TODO Auto-generated method stub 
    return 3; 
} 

@Override 
public String getGroup(int groupPosition) { 
    // TODO Auto-generated method stub 
    return movies.get(groupPosition).getTitle(); 
} 

@Override 
public int getGroupCount() { 
    // TODO Auto-generated method stub 
    return movies.size(); 
} 

@Override 
public long getGroupId(int groupPosition) { 
    // TODO Auto-generated method stub 
    //return Long.parseLong(movies.get(groupPosition).getId()); 
    return groupPosition; 
} 

@Override 
public View getGroupView(int groupPosition, boolean isExpanded, 
     View convertView, ViewGroup parent) { 
    String movieTitle = (String) getGroup(groupPosition); 

    if (convertView == null) { 
     LayoutInflater infalInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     convertView = infalInflater.inflate(R.layout.expandablelistcontent_group, null); 
    } 

    TextView grouptxt = (TextView) convertView.findViewById(R.id.ContentText); 

    grouptxt.setText(movieTitle); 

    return convertView; 
} 

@Override 
public boolean hasStableIds() { 
    // TODO Auto-generated method stub 
    return false; 
} 

@Override 
public boolean isChildSelectable(int groupPosition, int childPosition) { 
    // TODO Auto-generated method stub 
    return true; 
} 

}

这里是XML代码：

集团：

<RelativeLayout 
xmlns:android="http://schemas.android.com/apk/res/android" 
android:orientation="vertical" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content"> 
<TextView 
    android:id="@+id/ContentText" 
    android:text="Content" 
    android:layout_width="wrap_content" 
    android:layout_height="40dip" 
    android:layout_alignParentLeft="true" 
    android:layout_centerVertical="true"/> 
<ImageButton 
    android:id="@+id/delete_button" 
    android:layout_width="20dip" 
    android:layout_height="20dip" 
    android:background="@drawable/delete_button" 
    android:layout_alignParentRight="true" 
    android:layout_centerVertical="true" 
    > 
</ImageButton> 

</RelativeLayout>

孩子：

<RelativeLayout 
xmlns:android="http://schemas.android.com/apk/res/android" 
android:orientation="vertical" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent"> 
<LinearLayout 
xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:id="@+id/layout_audio"> 
    <ImageView 
     android:background="@drawable/audio_icon" 
     android:layout_height="20dip" 
     android:layout_width="20dip" 
     android:id="@+id/audio_icon" 
     > 
    </ImageView> 
    <TextView 
     android:id="@+id/audio_text" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Audio" 
     android:layout_toRightOf="@id/audio_icon" 
    > 
    </TextView> 
</LinearLayout> 

<LinearLayout 
xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:id="@+id/layout_video" 
android:layout_below="@id/layout_audio">  
<ImageView 
    android:background="@drawable/video_icon" 
    android:layout_height="20dip" 
    android:layout_width="20dip" 
    android:id="@+id/video_icon"> 
</ImageView> 
<TextView 
    android:id="@+id/video_text" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="Trailer" 
    android:layout_toRightOf="@id/video_icon" 
> 
</TextView> 
</LinearLayout> 
<LinearLayout 
xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:id="@+id/layout_image" 
android:layout_below="@id/layout_video"> 
<ImageView 
    android:background="@drawable/image_icon" 
    android:layout_height="20dip" 
    android:layout_width="20dip" 
    android:id="@+id/image_icon"> 
</ImageView> 
<TextView 
    android:id="@+id/image_text" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:gravity="center_vertical" 
    android:text="Poster" 
    android:layout_toRightOf="@id/image_icon" 
> 
</TextView> 
</LinearLayout> 
<LinearLayout 
xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:id="@+id/layout_info" 
android:layout_below="@id/layout_image"> 
<ImageView 
    android:background="@drawable/info_icon" 
    android:layout_height="20dip" 
    android:layout_width="20dip" 
    android:id="@+id/info_icon"> 
</ImageView> 
<TextView 
    android:id="@+id/info_text" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="Movie Information" 
    android:layout_toRightOf="@id/info_icon" 
> 
</TextView> 
</LinearLayout> 
</RelativeLayout>

来源

2011-10-13 DiamondGerace

对于记录，问题是组合布局中的ImageButton。我不知道为什么，但删除它我解决了这个问题。

来源

2011-10-14 16:02:17 DiamondGerace

结帐我的例子中，

public class MainExpand extends ExpandableListActivity { 

    List<String> list = new ArrayList<String>(); 
    private ExpandableListAdapter adapter; 
    private List<String> parentList = new ArrayList<String>(); 
    private List<List<String>> childList =new ArrayList<List<String>>(); 

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

     for (int i = 0; i < 2; i++) { 
      parentList.add("parent "+i); 
      list = new ArrayList<String>(); 
      for (int j = 0; j < 3; j++) { 
       list.add("child "+j); 
       } 
      childList.add(list); 
      } 
     adapter = new MyExpandableListAdapter(this,parentList,childList); 
     setListAdapter(adapter); 
    } 

     public class MyExpandableListAdapter extends BaseExpandableListAdapter { 

      Activity mActivity; 
      List<String> parentList; 
      List<List<String>> childList; 
      LayoutInflater inflater; 

      public MyExpandableListAdapter(Activity mActivity,List<String> parent,List<List<String>> child) 
      { 
       this.mActivity = mActivity; 
       this.parentList = parent; 
       this.childList = child; 
       inflater = LayoutInflater.from(mActivity); 
      } 

      public Object getChild(int groupPosition, int childPosition) { 
       return childList.get(groupPosition).get(childPosition); 
      } 

      public long getChildId(int groupPosition, int childPosition) { 
       return childPosition; 
      } 

      public int getChildrenCount(int groupPosition) { 
       return childList.get(groupPosition).size(); 
      } 

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

       TextView txtview; 
       if(convertView == null){ 

        convertView = inflater.inflate(R.layout.main, null); 
        txtview = (TextView)convertView.findViewById(R.id.txtGroup); 
        convertView.setTag(txtview); 
       } 
       else{ 
        txtview = (TextView) convertView.getTag(); 
       } 
       txtview.setText(getChild(groupPosition, childPosition).toString()); 

       return convertView; 
      } 

      public Object getGroup(int groupPosition) { 
       return parentList.get(groupPosition); 
      } 

      public int getGroupCount() { 
       return parentList.size(); 
      } 

      public long getGroupId(int groupPosition) { 
       return groupPosition; 
      } 

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

       TextView txtview; 
       if(convertView == null){ 

        convertView = inflater.inflate(R.layout.main, null); 
        txtview = (TextView)convertView.findViewById(R.id.txtGroup); 
        convertView.setTag(txtview); 
       } 
       else{ 
        txtview = (TextView) convertView.getTag(); 
       } 
       txtview.setText(getGroup(groupPosition).toString()); 
       return convertView; 
      } 

      public boolean isChildSelectable(int groupPosition, int childPosition) { 
       return true; 
      } 

      public boolean hasStableIds() { 
       return true; 
      } 
     } 
}

来源

2011-10-13 14:11:51

感谢您的回答，但是，如果我没有遗漏一些东西，与我的代码的区别是即时通讯只使用一个数组为父母和孩子（因为没有理由使用2）。那是问题吗？我明白它不应该。 – DiamondGerace

感谢您的回答，因为m卡在标题点击不能够展开childview，但与我的适配器的refrence我完成.. –

ExpandableListView不会追加孩子

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