Hello,
I am trying to implement an AutoCompleteTextView backed by HTTP
requests. i.e., the content of the suggestion comes from a web service
and is obtained by a HTTP request (for example, the symbol lookup
field on Google finance).
Here's the code I wrote to initialize the autocomplete field:
final AutoCompleteTextView field =
(AutoCompleteTextView)findViewById(R.id.lookup_input_field);
List<String> suggestions = new ArrayList<String>();
final MyAutoCompleteAdapter adapter = new MyAutoCompleteAdapter(this,
R.layout.auto_complete_dropdown, suggestions);
field.setAdapter(adapter);
field.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {}
public void onTextChanged(CharSequence s, int start, int before, int
count) {
String newValue = field.getEditableText().toString();
adapter.valueChanged(field, newValue);
}
});
And here's the valueChanged method of the adapter. The suggestion
retrieval is done in a thread to ensure responsive UI.
public void valueChanged(final AutoCompleteTextView view, final String
value) {
final Handler handler = new Handler() {
public void handleMessage(Message msg) {
clear();
List<String> suggestions =
(List<String>)msg.obj;
for (String suggestion : suggestions) {
add(suggestion);
}
notifyDataSetChanged();
}
};
new Thread() {
public void run() {
List<String> suggestions =
SearchHelper.search(value);
if (suggestions.size() > 0) {
Message msg = new Message();
msg.obj = suggestions;
handler.sendMessage(msg);
}
}
}.start();
}
Here's my problems: a) The suggestion dropdown doesn't always show up
on each keystroke, even though I know the SearchHelper has
successfully requested and returned suggestions based on user input.
b) When I select an item, the onTextChanged seems to be invoked again
and the suggestion dropdown shows up again.
Sorry if someone has discussed this issue but I wasn't able to find
any examples for my scenario.
Thanks!
Ken
--
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
