ExpandabeListView自动折叠

Question

我无法关闭以前扩展的组，以扩展新组。我已阅读过类似的问题，但我无法从中提取概念。我尝试使用collapseGroup（groupPosition）方法，但它不起作用。

Answer 1

嗨请尝试下面的代码。

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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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进口低于线。

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import android.widget.ExpandableListView.OnGroupExpandListener; 

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