AutoCompleteTextField list does not always scroll to top? - autocomplete

Question

The AutoCompleteTextField seems to work exactly as intended until I start backspacing in the TextField. I am not sure what the difference is, but if I type in something like "123 M" then I get values that start with "123 M". If I backspace and delete the M leaving "123 " in the field, the list changes, but it does not scroll to the top of the list.
I should note that everything works fine on the simulator and that I am experiencing this behavior when running a debug build on my iPhone.
EDIT: So this does not only seem to happen when backspacing. This image shows the results I have when typing in an address key by key. In any of the pictures where the list isn't viewable or is clipped, I am able to drag down on the list to get it to then display properly. I have not tried this on an Android device.
EDIT2:
public class CodenameOneTest {
private Form current;
private Resources theme;
private WaitingClass w;
private String[] properties = {"1 MAIN STREET", "123 E MAIN STREET", "12 EASTER ROAD", "24 MAIN STREET"};
public void init(Object context) {
theme = UIManager.initFirstTheme("/theme");
// Enable Toolbar on all Forms by default
Toolbar.setGlobalToolbar(true);
}
public void start() {
if(current != null) {
current.show();
return;
}
Form form = new Form("AutoCompleteTextField");
form.setLayout(new BorderLayout());
final DefaultListModel<String> options = new DefaultListModel<>();
AutoCompleteTextField ac = new AutoCompleteTextField(options) {
protected boolean filter(String text) {
if(text.length() == 0) {
options.removeAll();
return false;
}
String[] l = searchLocations(text);
if(l == null || l.length == 0) {
return false;
}
options.removeAll();
for(String s : l) {
options.addItem(s);
}
return true;
};
};
Container container = new Container(BoxLayout.y());
container.setScrollableY(true); // If you comment this out then the field works fine
container.add(ac);
form.addComponent(BorderLayout.CENTER, container);
form.show();
}
String[] searchLocations(String text) {
try {
if(text.length() > 0) {
if(w != null) {
w.actionPerformed(null);
}
w = new WaitingClass();
String[] properties = getProperties(text);
if(Display.getInstance().isEdt()) {
Display.getInstance().invokeAndBlock(w);
}
else {
w.run();
}
return properties;
}
}
catch(Exception e) {
Log.e(e);
}
return null;
}
private String[] getProperties(String text) {
List<String> returnList = new ArrayList<>();
List<String> propertyList = Arrays.asList(properties);
for(String property : propertyList) {
if(property.startsWith(text)) {
returnList.add(property);
}
}
w.actionPerformed(null);
return returnList.toArray(new String[returnList.size()]);
}
class WaitingClass implements Runnable, ActionListener<ActionEvent> {
private boolean finishedWaiting;
public void run() {
while(!finishedWaiting) {
try {
Thread.sleep(30);
}
catch(InterruptedException ex) {
ex.printStackTrace();
}
}
}
public void actionPerformed(ActionEvent e) {
finishedWaiting = true;
return;
}
}
public void stop() {
current = Display.getInstance().getCurrent();
if(current instanceof Dialog) {
((Dialog)current).dispose();
current = Display.getInstance().getCurrent();
}
}
public void destroy() {
}
}

Answer 1

I used this code on an iPhone 4s:
public void start() {
if(current != null){
current.show();
return;
}
Form hi = new Form("AutoComplete", new BorderLayout());
if(apiKey == null) {
hi.add(new SpanLabel("This demo requires a valid google API key to be set in the constant apiKey, "
+ "you can get this key for the webservice (not the native key) by following the instructions here: "
+ "https://developers.google.com/places/web-service/get-api-key"));
hi.getToolbar().addCommandToRightBar("Get Key", null, e -> Display.getInstance().execute("https://developers.google.com/places/web-service/get-api-key"));
hi.show();
return;
}
Container box = new Container(new BoxLayout(BoxLayout.Y_AXIS));
box.setScrollableY(true);
for(int iter = 0 ; iter < 30 ; iter++) {
box.add(createAutoComplete());
}
hi.add(BorderLayout.CENTER, box);
hi.show();
}
private AutoCompleteTextField createAutoComplete() {
final DefaultListModel<String> options = new DefaultListModel<>();
AutoCompleteTextField ac = new AutoCompleteTextField(options) {
#Override
protected boolean filter(String text) {
if(text.length() == 0) {
return false;
}
String[] l = searchLocations(text);
if(l == null || l.length == 0) {
return false;
}
options.removeAll();
for(String s : l) {
options.addItem(s);
}
return true;
}
};
ac.setMinimumElementsShownInPopup(5);
return ac;
}
String[] searchLocations(String text) {
try {
if(text.length() > 0) {
ConnectionRequest r = new ConnectionRequest();
r.setPost(false);
r.setUrl("https://maps.googleapis.com/maps/api/place/autocomplete/json");
r.addArgument("key", apiKey);
r.addArgument("input", text);
NetworkManager.getInstance().addToQueueAndWait(r);
Map<String,Object> result = new JSONParser().parseJSON(new InputStreamReader(new ByteArrayInputStream(r.getResponseData()), "UTF-8"));
String[] res = Result.fromContent(result).getAsStringArray("//description");
return res;
}
} catch(Exception err) {
Log.e(err);
}
return null;
}
I was able to create this issue but not the issue you describe.