ExpandabeListView自动崩溃

Question

我无法在扩展新群组时关闭之前扩展的群组。我读过类似的问题，但我无法从中提取概念。我尝试使用collapseGroup（groupPosition）方法，但它无效。

Answer 1

您好请尝试以下代码。

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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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在线下导入。

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import android.widget.ExpandableListView.OnGroupExpandListener;

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