我正在使用 AutoCompleteTextView 控件 由于数据量巨大，AutoCompleteTextView 适配器通过 TextWatcher onTextChanged 事件内的 Web 服务填充。
但是这个解决方案并不能很好地工作，因为下拉列表有时显示，有时不显示，有时会崩溃。 我尝试更改为 afterTextChanged 事件，但结果相同
我看到了一些答案，但他们谈论从应用程序或 SQLite 内填充适配器
任何想法如何解决我遇到的这些问题
谢谢
actvCentre = (AutoCompleteTextView) findViewById(R.id.actvCentre);
actvCentre.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) {
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i2, int i3) {
FillCityAuto(charSequence.toString());
actvCentre.showDropDown();
}
@Override
public void afterTextChanged(Editable editable) {
}
});
//-------------------------------------------------------- -----------
private void FillCityAuto(String CityIni)
{
String sXML="";
// Get XML from Web Service
try
{
SelectWSTask selectWSTask = new SelectWSTask();
sXML = selectWSTask.execute(CityIni).get();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
/** The parsing of the xml data is done in a non-ui thread */
CityAutoLoaderTask caLoaderTask = new CityAutoLoaderTask();
caLoaderTask.execute(sXML);
}
//-------------------------------------------------------- ----------------------------
private class SelectWSTask extends AsyncTask<String, String, String> {
private String resp;
private String CallSelectWS(String CityIni) throws IOException, XmlPullParserException {
WebserviceCall com = new WebserviceCall();
String aResponse = com.CityAutoComplete("CityAutoComplete", CityIni);
return aResponse;
}
@Override
protected String doInBackground(String... params) {
try {
String CityIni = params[0];
resp = CallSelectWS(CityIni);
} catch (IOException e) {
e.printStackTrace();
} catch (XmlPullParserException e) {
e.printStackTrace();
}
return resp;
}
@Override
protected void onPostExecute(String result) {
}
@Override
protected void onPreExecute() {
}
@Override
protected void onProgressUpdate(String... text) {
}
}
//-------------------------------------------------------- -----------
private class CityAutoLoaderTask extends AsyncTask<String, Void, List<HashMap<String, String>>>{
/** Doing the parsing of xml data in a non-ui thread */
@Override
protected List<HashMap<String, String>> doInBackground(String... xmlData) {
StringReader reader = new StringReader(xmlData[0]);
MsgsXmlParser msgsXmlParser = new MsgsXmlParser();
/** Getting the parsed data as a List construct */
List<HashMap<String, String>> CAuto = null;
try {
CAuto = msgsXmlParser.parseCityAuto(reader);
} catch (XmlPullParserException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return CAuto;
}
@Override
protected void onPostExecute(List<HashMap<String, String>> list) {
ArrayList<String> arrayList = new ArrayList<String>();
int lsize = ((ArrayList) list).size();
for (int i=0; i<lsize;i++) {
HashMap<String, String> firstMap = list.get(i);
String City = firstMap.get("City");
arrayList.add(City);
}
//String a = "";
arrayAdapter = null;
arrayAdapter = new ArrayAdapter<String>(ListFilter.this, android.R.layout.simple_list_item_1, arrayList);
arrayAdapter.notifyDataSetChanged();
actvCentre.setAdapter(arrayAdapter);
// save index and top position
}
}
最佳答案
在onPostExecute()中调用actvCentre.showDropDown();
关于java - android 在 TextWatcher 中更改 autocompletetextview 适配器，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/24682372/