ExpandabeListView自动崩溃 [英] ExpandabeListView auto collapse

问题描述

我不能够关闭previously扩展群拓展新的组。我看过类似的问题，但我无法从中提取概念。我试着用collapseGroup（groupPosition）方法，但它不能正常工作。

I am not able to close a previously expanded group on expanding a new group. I have read similar questions, but I'm unable to extract concept from them. I tried using the collapseGroup (groupPosition) method, but it is not working.

推荐答案

您好，请尝试以下code。

Hi Please try below code.

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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进口低于行。

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import below line.

import android.widget.ExpandableListView.OnGroupExpandListener;

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