android编程开发。如下，去掉this后，出现Cannot make a static reference to the non-static method

怎么解释？ getExpandableListView().setOnChildClickListener( new OnChildClickListener() { @Override public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) { Intent intent = getIntent(); intent.putExtra("city", cities[groupPosition][childPosition]); SelectCityActivity.this.setResult(0, intent); SelectCityActivity.this.finish(); // TODO Auto-generated method stub return false; } });