/**
* Submits an autocomplete query to the Places Geo Data Autocomplete API. Results are returned as
* frozen AutocompletePrediction objects, ready to be cached. objects to store the Place ID and
* description that the API returns. Returns an empty list if no results were found. Returns null
* if the API client is not available or the query did not complete successfully. This method MUST
* be called off the main UI thread, as it will block until data is returned from the API, which
* may include a network request.
*
* @param constraint Autocomplete query string
* @return Results from the autocomplete API or null if the query was not successful.
* @see Places#GEO_DATA_API#getAutocomplete(CharSequence)
* @see AutocompletePrediction#freeze()
*/
private ArrayList<AutocompletePrediction> getAutocomplete(CharSequence constraint) {
if (mGoogleApiClient.isConnected()) {
Log.i(TAG, "Starting autocomplete query for: " + constraint);
// Submit the query to the autocomplete API and retrieve a PendingResult that will
// contain the results when the query completes.
PendingResult<AutocompletePredictionBuffer> results =
Places.GeoDataApi.getAutocompletePredictions(
mGoogleApiClient, constraint.toString(), mBounds, mPlaceFilter);
// This method should have been called off the main UI thread. Block and wait for at most 60s
// for a result from the API.
AutocompletePredictionBuffer autocompletePredictions = results.await(60, TimeUnit.SECONDS);
// Confirm that the query completed successfully, otherwise return null
final Status status = autocompletePredictions.getStatus();
if (!status.isSuccess()) {
Toast.makeText(
getContext(), "Error contacting API: " + status.toString(), Toast.LENGTH_SHORT)
.show();
Log.e(TAG, "Error getting autocomplete prediction API call: " + status.toString());
autocompletePredictions.release();
return null;
}
Log.i(
TAG, "Query completed. Received " + autocompletePredictions.getCount() + " predictions.");
// Freeze the results immutable representation that can be stored safely.
return DataBufferUtils.freezeAndClose(autocompletePredictions);
}
Log.e(TAG, "Google API client is not connected for autocomplete query.");
return null;
}
private ArrayList<PlaceAutocomplete> getAutocomplete(CharSequence constraint) {
if (mGoogleApiClient.isConnected()) {
Log.i(TAG, "Starting autocomplete query for: " + constraint);
// Submit the query to the autocomplete API and retrieve a PendingResult that will
// contain the results when the query completes.
PendingResult<AutocompletePredictionBuffer> results =
Places.GeoDataApi.getAutocompletePredictions(
mGoogleApiClient, constraint.toString(), null, mPlaceFilter);
// This method should have been called off the main UI thread. Block and wait for at most 60s
// for a result from the API.
AutocompletePredictionBuffer autocompletePredictions = results.await(60, TimeUnit.SECONDS);
// Confirm that the query completed successfully, otherwise return null
final Status status = autocompletePredictions.getStatus();
if (!status.isSuccess()) {
Toast.makeText(
getContext(),
"Error contacting Google Places: " + status.toString(),
Toast.LENGTH_SHORT)
.show();
Log.e(
TAG,
"Error getting autocomplete prediction API call: "
+ status.getStatusMessage()
+ status.getStatus().getStatusMessage());
autocompletePredictions.release();
return null;
}
Log.i(
TAG, "Query completed. Received " + autocompletePredictions.getCount() + " predictions.");
// Copy the results into our own data structure, because we can't hold onto the buffer.
// AutocompletePrediction objects encapsulate the API response (place ID and description).
Iterator<AutocompletePrediction> iterator = autocompletePredictions.iterator();
ArrayList resultList = new ArrayList<>(autocompletePredictions.getCount());
while (iterator.hasNext()) {
AutocompletePrediction prediction = iterator.next();
// Get the details of this prediction and copy it into a new PlaceAutocomplete object.
resultList.add(new PlaceAutocomplete(prediction.getPlaceId(), prediction.getDescription()));
}
// Release the buffer now that all data has been copied.
autocompletePredictions.release();
return resultList;
}
Log.e(TAG, "Google API client is not connected for autocomplete query.");
return null;
}
