expandable listview inside对话框获取错误

Question

我想在对话框中执行一个可扩展的listview，但在设置适配器(l.setadapter(expAdapter)的行中出现错误。

protected void onCreate(Bundle savedInstanceState)
{ 

super.onCreate(savedInstanceState);

    Dialog dialog = new Dialog(getBaseContext());
        dialog.setContentView(R.layout.menu);
        int id= getIntent().getExtras().getInt("id");   
     dbAdapter = new DBAdapter(this);
     dbAdapter=dbAdapter.open(); 

      int length = dbAdapter.getDetailsOf(proion_id).size();
      Toast.makeText(getApplicationContext(),  length, Toast.LENGTH_LONG).show();


 loadData();
    ExpandableListView l = (ExpandableListView) findViewById(R.id.item_comments_explist);
    myExpandableAdapter expAdapter = new myExpandableAdapter(this,  dbAdapter.getDetailsOf(id), childs);
    l.setAdapter(expAdapter);  }

logcat

Answer 1

经过研究，我找不到任何解决方案。所以我将活动主题设置为Dialog android:theme=“@android:style/theme.Dialog”