adapter.notifyDataSetChanged()不起作用

</pre><pre name="code" class="java">ArrayAdapter<String> adapter;
private List<String> list = new ArrayList<String>();
// ......
list.add("1");
list.add("1");
list.add("1");
list.add("1");
list.add("1");
list.add("1");
adapter = new ArrayAdapter<String>(mCtx, android.R.layout.simple_list_item_1, list);
listView.setAdapter(adapter);

//-------------------------------
@Override
public void onClick(View v) {
<span style="white-space:pre">	</span>List<String> tmp = new ArrayList<>();
<span style="white-space:pre">	</span>tmp.add("A");
<span style="white-space:pre">	</span>tmp.add("A");
<span style="white-space:pre">	</span>tmp.add("A");
<span style="white-space:pre">	</span>tmp.add("A");
<span style="white-space:pre">	</span>tmp.add("A");
<span style="white-space:pre">	</span>list = tmp;
<span style="white-space:pre">	</span>adapter.notifyDataSetChanged();
}

这里点击事件触发的实际并不能实现数据的刷新，原因是

private List<T> mObjects;<pre name="code" class="java">public ArrayAdapter(Context context, int resource, List<T> objects) {init(context, resource, 0, objects);}

private void init(Context context, int resource, int textViewResourceId, List<T> objects) {mContext = context;mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);mResource = mDropDownResource = resource;mObjects = objects;mFieldId = textViewResourceId;}

而adapter里面mObjects指向的还是原来的那块数据。adapter里面的数据并发生改变。

可以使用list.addAll(tmp);这样子就可以刷新数据了。