ExpandabeListView自動摺疊

Question

我無法關閉以前擴展的組，以擴展新組。我已閱讀過類似的問題，但我無法從中提取概念。我嘗試使用collapseGroup（groupPosition）方法，但它不起作用。

Answer 1

嗨請嘗試下面的代碼。

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int lastExpandedGroupPosition = 0; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 

    final ExpandableListView listView = (ExpandableListView) findViewById(R.id.listView); 

    listView.setOnGroupExpandListener(new OnGroupExpandListener() { 

     @Override 
     public void onGroupExpand(int groupPosition) { 

      // TODO Auto-generated method stub 
      if (groupPosition != lastExpandedGroupPosition) { 
       listView.collapseGroup(lastExpandedGroupPosition); 

      } 
      lastExpandedGroupPosition = groupPosition; 

     } 
    }); 

    adapter = new ExpandableListAdapter(this, new ArrayList<String>(), 
      new ArrayList<ArrayList<Vehicle>>()); 

    // Set this blank adapter to the list view 
    listView.setAdapter(adapter); 


} 

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進口低於線。

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import android.widget.ExpandableListView.OnGroupExpandListener; 

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