我有一个包含 60-70 个元素的 ArrayList。我为 AutoCompleteTextView 设置了一个适配器,如下所示。
AutoCompleteTextView mRecipient = (AutoCompleteTextView) this.findViewById(R.id.recipient);
mRecipient.setThreshold(1);
Log.i("Array list", ""+names);// Here I got the arrayList
ArrayAdapter<String> nameadapter=new ArrayAdapter<String>(MyClass.this, android.R.layout.simple_list_item_1, names);
mRecipient.setAdapter(nameadapter);
但是下拉列表没有显示,我在 Logcat 中收到了一些警告(不是错误)。
04-21 17:15:53.017: W/Filter(15093): An exception occured during performFiltering()!
04-21 17:15:53.017: W/Filter(15093): java.lang.NullPointerException
04-21 17:15:53.017: W/Filter(15093): at android.widget.ArrayAdapter$ArrayFilter.performFiltering(ArrayAdapter.java:437)
04-21 17:15:53.017: W/Filter(15093): at android.widget.Filter$RequestHandler.handleMessage(Filter.java:234)
04-21 17:15:53.017: W/Filter(15093): at android.os.Handler.dispatchMessage(Handler.java:99)
04-21 17:15:53.017: W/Filter(15093): at android.os.Looper.loop(Looper.java:123)
04-21 17:15:53.017: W/Filter(15093): at android.os.HandlerThread.run(HandlerThread.java:60)
我在下面还有一个 ListView,现在是空的。
有人能弄清楚这个警告是什么意思吗?