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以及我试图更新autoCompleteTextview ArrayAdapter dynamiclly每次通过使用TextWathcer更改文本。Android - AutoCompleteTextView动态更新问题
每当文本发生变化时,在新的AsyncTask中和来自异步任务(onPostExecute)的回调中,我从适配器调用clear()并向它添加新项目,然后调用notifyDataSetChanged。 不幸的是,自动完成下拉是从来没有显示..
请,我在哪里去worng?
这里是代码:
AutoCompleteTextView acCountry = (AutoCompleteTextView)layout.findViewById(R.id.autoComplete);
final ArrayAdapter<RMAutoComplete.ListItem> countriesAdapter = new ArrayAdapter<RMAutoComplete.ListItem>(this.context,android.R.layout.simple_dropdown_item_1line);
acCountry.addTextChangedListener(new TextWatcher() {
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (s.length() > 1)
{
new AsyncTask<String, Void, List<RMAutoComplete.ListItem>>(){
@Override
protected List<ListItem> doInBackground(String... params) {
List<ListItem> l = null;
try {
l = location.getCountryData(params[0]);
} catch (Exception e) {
Log.e(TAG,"error when getCountryData",e);
}
return l;
}
@Override
protected void onPostExecute(List<ListItem> countries) {
countriesAdapter.clear();
if (countries != null)
for (ListItem listItem : countries) {
countriesAdapter.add(listItem);
}
countriesAdapter.notifyDataSetChanged();
}
}.execute(s.toString());
}
}
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
public void afterTextChanged(Editable s) {}
}
);
我正在做类似的事情! http://stackoverflow.com/questions/12854336/autocompletetextview-backed-by-cursorloader – toobsco42