Autocomplete predictions don't show up in my MapsActivity
when i type text in AutoCompleteTextView
(mSearchText).
I tried following the tutorial at the following link: https://www.youtube.com/watch?v=6Trdd9EnmqY&list=PLgCYzUzKIBE-vInwQhGSdnbyJ62nixHCt&index=8. Some methods used in it recently became deprecated, so I checked the documentation at https://developers.google.com/places/android-sdk/autocomplete, especially "Get place predictions programmatically" and "Migrating to the New Places SDK Client". I also followed a guide from the same guy to set up my API key, and I think that shouldn't be the problem here. This is my first Android application and my first question on this site, so please be patient with me.
Places.initialize(getApplicationContext(), getString(R.string.google_maps_API_key));
PlacesClient placesClient = Places.createClient(this);
FindAutocompletePredictionsRequest request = FindAutocompletePredictionsRequest.builder()
.setLocationBias(RECTANGULAR_BOUNDS)
.setQuery(mSearchText.getText().toString())
.build();
placesClient.findAutocompletePredictions(request).addOnSuccessListener((response) -> {
for (AutocompletePrediction prediction : response.getAutocompletePredictions()) {
Log.i(TAG, prediction.getPlaceId());
Log.i(TAG, prediction.getPrimaryText(null).toString());
}
}).addOnFailureListener((exception) -> {
if (exception instanceof ApiException) {
ApiException apiException = (ApiException) exception;
Log.e(TAG, "Place not found: " + apiException.getStatusCode());
}
});
The Autocomplete predictions should show up as the user types in the searchbar, but that doesn't happen. I don't get any of the logs from the listeners either.
build.gradle (Module:app)
implementation 'com.google.android.gms:play-services-maps:17.0.0'
implementation 'com.google.android.gms:play-services-location:17.0.0'
implementation 'com.google.android.gms:play-services-places:17.0.0'
implementation 'com.google.android.libraries.places:places:1.1.0'
Activity Layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:padding="15dp"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".activity.MapsActivity">
<EditText
android:id="@+id/place_search"
android:hint="Search"
android:inputType="textPostalAddress"
android:padding="15dp"
android:layout_marginBottom="15dp"
android:drawableLeft="@drawable/places_ic_search"
android:background="@drawable/edit_text_border"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/places_recycler_view"
android:background="#FFF"
android:orientation="vertical"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</androidx.recyclerview.widget.RecyclerView>
</LinearLayout>
Activity
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
import com.google.android.libraries.places.api.Places;
import com.google.android.libraries.places.api.model.Place;
import com.zaaibo.drive.R;
import com.zaaibo.drive.adapter.PlacesAutoCompleteAdapter;
public class MapsActivity extends AppCompatActivity implements PlacesAutoCompleteAdapter.ClickListener{
private PlacesAutoCompleteAdapter mAutoCompleteAdapter;
private RecyclerView recyclerView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_settings);
Places.initialize(this, getResources().getString(R.string.google_maps_key));
recyclerView = (RecyclerView) findViewById(R.id.places_recycler_view);
((EditText) findViewById(R.id.place_search)).addTextChangedListener(filterTextWatcher);
mAutoCompleteAdapter = new PlacesAutoCompleteAdapter(this);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
mAutoCompleteAdapter.setClickListener(this);
recyclerView.setAdapter(mAutoCompleteAdapter);
mAutoCompleteAdapter.notifyDataSetChanged();
}
private TextWatcher filterTextWatcher = new TextWatcher() {
public void afterTextChanged(Editable s) {
if (!s.toString().equals("")) {
mAutoCompleteAdapter.getFilter().filter(s.toString());
if (recyclerView.getVisibility() == View.GONE) {recyclerView.setVisibility(View.VISIBLE);}
} else {
if (recyclerView.getVisibility() == View.VISIBLE) {recyclerView.setVisibility(View.GONE);}
}
}
public void beforeTextChanged(CharSequence s, int start, int count, int after) { }
public void onTextChanged(CharSequence s, int start, int before, int count) { }
};
@Override
public void click(Place place) {
Toast.makeText(this, place.getAddress()+", "+place.getLatLng().latitude+place.getLatLng().longitude, Toast.LENGTH_SHORT).show();
}
}
Adapter
import android.content.Context;
import android.graphics.Typeface;
import android.text.style.CharacterStyle;
import android.text.style.StyleSpan;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.google.android.gms.common.api.ApiException;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import com.google.android.gms.tasks.Tasks;
import com.google.android.libraries.places.api.model.AutocompletePrediction;
import com.google.android.libraries.places.api.model.AutocompleteSessionToken;
import com.google.android.libraries.places.api.model.Place;
import com.google.android.libraries.places.api.net.FetchPlaceRequest;
import com.google.android.libraries.places.api.net.FetchPlaceResponse;
import com.google.android.libraries.places.api.net.FindAutocompletePredictionsRequest;
import com.google.android.libraries.places.api.net.FindAutocompletePredictionsResponse;
import com.google.android.libraries.places.api.net.PlacesClient;
import com.zaaibo.drive.R;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
public class PlacesAutoCompleteAdapter extends RecyclerView.Adapter<PlacesAutoCompleteAdapter.PredictionHolder> implements Filterable {
private static final String TAG = "PlacesAutoAdapter";
private ArrayList<PlaceAutocomplete> mResultList = new ArrayList<>();
private Context mContext;
private CharacterStyle STYLE_BOLD;
private CharacterStyle STYLE_NORMAL;
private final PlacesClient placesClient;
private ClickListener clickListener;
public PlacesAutoCompleteAdapter(Context context) {
mContext = context;
STYLE_BOLD = new StyleSpan(Typeface.BOLD);
STYLE_NORMAL = new StyleSpan(Typeface.NORMAL);
placesClient = com.google.android.libraries.places.api.Places.createClient(context);
}
public void setClickListener(ClickListener clickListener) {
this.clickListener = clickListener;
}
public interface ClickListener {
void click(Place place);
}
/**
* Returns the filter for the current set of autocomplete results.
*/
@Override
public Filter getFilter() {
return new Filter() {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults();
// Skip the autocomplete query if no constraints are given.
if (constraint != null) {
// Query the autocomplete API for the (constraint) search string.
mResultList = getPredictions(constraint);
if (mResultList != null) {
// The API successfully returned results.
results.values = mResultList;
results.count = mResultList.size();
}
}
return results;
}
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
if (results != null && results.count > 0) {
// The API returned at least one result, update the data.
notifyDataSetChanged();
} else {
// The API did not return any results, invalidate the data set.
//notifyDataSetInvalidated();
}
}
};
}
private ArrayList<PlaceAutocomplete> getPredictions(CharSequence constraint) {
final ArrayList<PlaceAutocomplete> resultList = new ArrayList<>();
// Create a new token for the autocomplete session. Pass this to FindAutocompletePredictionsRequest,
// and once again when the user makes a selection (for example when calling fetchPlace()).
AutocompleteSessionToken token = AutocompleteSessionToken.newInstance();
//https://gist.github.com/graydon/11198540
// Use the builder to create a FindAutocompletePredictionsRequest.
FindAutocompletePredictionsRequest request = FindAutocompletePredictionsRequest.builder()
// Call either setLocationBias() OR setLocationRestriction().
//.setLocationBias(bounds)
//.setCountry("BD")
//.setTypeFilter(TypeFilter.ADDRESS)
.setSessionToken(token)
.setQuery(constraint.toString())
.build();
Task<FindAutocompletePredictionsResponse> autocompletePredictions = placesClient.findAutocompletePredictions(request);
// This method should have been called off the main UI thread. Block and wait for at most
// 60s for a result from the API.
try {
Tasks.await(autocompletePredictions, 60, TimeUnit.SECONDS);
} catch (ExecutionException | InterruptedException | TimeoutException e) {
e.printStackTrace();
}
if (autocompletePredictions.isSuccessful()) {
FindAutocompletePredictionsResponse findAutocompletePredictionsResponse = autocompletePredictions.getResult();
if (findAutocompletePredictionsResponse != null)
for (AutocompletePrediction prediction : findAutocompletePredictionsResponse.getAutocompletePredictions()) {
Log.i(TAG, prediction.getPlaceId());
resultList.add(new PlaceAutocomplete(prediction.getPlaceId(), prediction.getPrimaryText(STYLE_NORMAL).toString(), prediction.getFullText(STYLE_BOLD).toString()));
}
return resultList;
} else {
return resultList;
}
}
@NonNull
@Override
public PredictionHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
LayoutInflater layoutInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View convertView = layoutInflater.inflate(R.layout.place_recycler_item_layout, viewGroup, false);
return new PredictionHolder(convertView);
}
@Override
public void onBindViewHolder(@NonNull PredictionHolder mPredictionHolder, final int i) {
mPredictionHolder.address.setText(mResultList.get(i).address);
mPredictionHolder.area.setText(mResultList.get(i).area);
}
@Override
public int getItemCount() {
return mResultList.size();
}
public PlaceAutocomplete getItem(int position) {
return mResultList.get(position);
}
public class PredictionHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private TextView address, area;
private LinearLayout mRow;
PredictionHolder(View itemView) {
super(itemView);
area = itemView.findViewById(R.id.place_area);
address = itemView.findViewById(R.id.place_address);
mRow = itemView.findViewById(R.id.place_item_view);
itemView.setOnClickListener(this);
}
@Override
public void onClick(View v) {
PlaceAutocomplete item = mResultList.get(getAdapterPosition());
if (v.getId() == R.id.place_item_view) {
String placeId = String.valueOf(item.placeId);
List<Place.Field> placeFields = Arrays.asList(Place.Field.ID, Place.Field.NAME, Place.Field.LAT_LNG, Place.Field.ADDRESS);
FetchPlaceRequest request = FetchPlaceRequest.builder(placeId, placeFields).build();
placesClient.fetchPlace(request).addOnSuccessListener(new OnSuccessListener<FetchPlaceResponse>() {
@Override
public void onSuccess(FetchPlaceResponse response) {
Place place = response.getPlace();
clickListener.click(place);
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception exception) {
if (exception instanceof ApiException) {
Toast.makeText(mContext, exception.getMessage() + "", Toast.LENGTH_SHORT).show();
}
}
});
}
}
}
/**
* Holder for Places Geo Data Autocomplete API results.
*/
public class PlaceAutocomplete {
public CharSequence placeId;
public CharSequence address, area;
PlaceAutocomplete(CharSequence placeId, CharSequence area, CharSequence address) {
this.placeId = placeId;
this.area = area;
this.address = address;
}
@Override
public String toString() {
return area.toString();
}
}
}
public class PlaceArrayAdapter extends ArrayAdapter<PlaceArrayAdapter.PlaceAutocomplete> implements Filterable {
private static final String TAG = "PlaceArrayAdapter";
private final PlacesClient placesClient;
private RectangularBounds mBounds;
private ArrayList<PlaceAutocomplete> mResultList = new ArrayList<>();
public Context context;
/**
* Constructor
*
* @param context Context
* @param resource Layout resource
* @param bounds Used to specify the search bounds
* @param filter Used to specify place types
*/
public PlaceArrayAdapter(Context context, int resource, RectangularBounds bounds) {
super(context, resource);
this.context = context;
mBounds = bounds;
placesClient = com.google.android.libraries.places.api.Places.createClient(context);
}
@NonNull
@Override
public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
View view = super.getView(position, convertView, parent);
TypefaceHelper.typeface(view);
return view;
}
@Override
public int getCount() {
if (mResultList == null)
return 0;
else
return mResultList.size();
}
@Override
public PlaceAutocomplete getItem(int position) {
return mResultList.get(position);
}
private ArrayList<PlaceAutocomplete> getPredictions(CharSequence constraint) {
final ArrayList<PlaceAutocomplete> resultList = new ArrayList<>();
// Create a new token for the autocomplete session. Pass this to FindAutocompletePredictionsRequest,
// and once again when the user makes a selection (for example when calling fetchPlace()).
AutocompleteSessionToken token = AutocompleteSessionToken.newInstance();
// Use the builder to create a FindAutocompletePredictionsRequest.
FindAutocompletePredictionsRequest request = FindAutocompletePredictionsRequest.builder()
// Call either setLocationBias() OR setLocationRestriction().
// .setLocationBias(bounds)
.setLocationBias(mBounds)
//.setCountry("au")
// .setTypeFilter(TypeFilter.ADDRESS)
.setSessionToken(token)
.setQuery(constraint.toString())
.build();
Task<FindAutocompletePredictionsResponse> autocompletePredictions = placesClient.findAutocompletePredictions(request);
// This method should have been called off the main UI thread. Block and wait for at most
// 60s for a result from the API.
try {
Tasks.await(autocompletePredictions, 60, TimeUnit.SECONDS);
} catch (ExecutionException | InterruptedException | TimeoutException e) {
e.printStackTrace();
}
if (autocompletePredictions.isSuccessful()) {
FindAutocompletePredictionsResponse findAutocompletePredictionsResponse = autocompletePredictions.getResult();
if (findAutocompletePredictionsResponse != null)
for (com.google.android.libraries.places.api.model.AutocompletePrediction prediction : findAutocompletePredictionsResponse.getAutocompletePredictions()) {
Log.i(TAG, prediction.getPlaceId());
Log.i(TAG, prediction.getPrimaryText(null).toString());
resultList.add(new PlaceAutocomplete(prediction.getPlaceId(), prediction.getFullText(null).toString()));
}
return resultList;
} else {
return resultList;
}
}
@Override
public Filter getFilter() {
Filter filter = new Filter() {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults();
if (constraint != null) {
// Query the autocomplete API for the entered constraint
Log.d(TAG, "Before Prediction");
mResultList = getPredictions(constraint);
Log.d(TAG, "After Prediction");
if (mResultList != null) {
// Results
results.values = mResultList;
results.count = mResultList.size();
}
}
return results;
}
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
if (results != null && results.count > 0) {
// The API returned at least one result, update the data.
notifyDataSetChanged();
} else {
// The API did not return any results, invalidate the data set.
notifyDataSetInvalidated();
}
}
};
return filter;
}
public class PlaceAutocomplete {
public CharSequence placeId;
public CharSequence description;
PlaceAutocomplete(CharSequence placeId, CharSequence description) {
this.placeId = placeId;
this.description = description;
}
@Override
public String toString() {
return description.toString();
}
}
}
/* Now call adapter from activity */
autoCompleteTextView = findViewById(R.id.autoCompleteTextView);
autoCompleteTextView.setThreshold(3);
//autoCompleteTextView.setOnItemClickListener(mAutocompleteClickListener);
mPlaceArrayAdapter = new PlaceArrayAdapter(
this, R.layout.adapter_place_array, CURRENT_LOCATION_BONDS
);
>
activity layout file
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<fragment
android:id="@+id/mapLocation"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="@dimen/_2sdp"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintBottom_toTopOf="@+id/autoCompleteEditText"/>
<androidx.appcompat.widget.AppCompatAutoCompleteTextView
android:id="@+id/autoCompleteEditText"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_weight="0.9"
android:gravity="start"
android:hint="Enter Location or Drag map to select location"
android:padding="@dimen/_10sdp"
android:singleLine="true"
android:textColor="@color/color_black_two"
android:textColorHint="@color/color_brown_grey"
android:textSize="@dimen/_13ssp"
app:layout_constraintStart_toStartOf="@+id/mapLocation"
app:layout_constraintEnd_toEndOf="@+id/mapLocation"
app:layout_constraintBottom_toBottomOf="parent"/>
</androidx.constraintlayout.widget.ConstraintLayout>
In Activity
class MainActivity :AppCompatActivity(), OnMapReadyCallback {
private var mMap: GoogleMap? = null
private var placeAdapter: PlaceArrayAdapter? = null
private lateinit var mPlacesClient: PlacesClient
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
}
override fun onPostCreate(savedInstanceState: Bundle?) {
super.onPostCreate(savedInstanceState)
Places.initialize(this, "GOOGLE_MAPS_KEY")
mPlacesClient = Places.createClient(this)
val mapFragment: SupportMapFragment? = supportFragmentManager.findFragmentById(R.id.mapLocation) as? SupportMapFragment
mapFragment?.getMapAsync(this)
placeAdapter = PlaceArrayAdapter(this, R.layout.layout_item_places, mPlacesClient)
autoCompleteEditText.setAdapter(placeAdapter)
autoCompleteEditText.onItemClickListener = AdapterView.OnItemClickListener { parent, _, position, _ ->
val place = parent.getItemAtPosition(position) as PlaceDataModel
autoCompleteEditText.apply {
setText(place.fullText)
setSelection(autoCompleteEditText.length())
}
}
}
override fun onMapReady(p0: GoogleMap?) {
}
}
PlaceArrayAdapter
class PlaceArrayAdapter(context: Context,val resource: Int, val mPlacesClient: PlacesClient) : ArrayAdapter<PlaceDataModel>(context, resource), Filterable {
private var mContext : Context = context
private var resultList = arrayListOf<PlaceDataModel>()
override fun getCount(): Int {
return when {
resultList.isNullOrEmpty() -> 0
else -> resultList.size
}
}
override fun getItem(position: Int): PlaceDataModel? {
return when {
resultList.isNullOrEmpty() -> null
else -> resultList[position]
}
}
override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
var view = convertView
val viewHolder: ViewHolder
if (view == null) {
viewHolder = ViewHolder()
view = LayoutInflater.from(context).inflate(resource, parent, false)
viewHolder.description = view.findViewById(R.id.searchFullText) as TextView
view.tag = viewHolder
} else {
viewHolder = view.tag as ViewHolder
}
bindView(viewHolder, resultList, position)
return view!!
}
private fun bindView(viewHolder: ViewHolder, place: ArrayList<PlaceDataModel>, position: Int) {
if (!place.isNullOrEmpty()) {
viewHolder.description?.text = place[position].fullText
}
}
override fun getFilter(): Filter {
return object : Filter() {
override fun publishResults(constraint: CharSequence?, results: FilterResults?) {
if (results != null && results.count > 0) {
mContext.runOnUiThread {
notifyDataSetChanged()
}
} else {
notifyDataSetInvalidated()
}
}
override fun performFiltering(constraint: CharSequence?): FilterResults {
val filterResults = FilterResults()
if (constraint != null) {
resultList.clear()
val address = getAutocomplete(mPlacesClient, constraint.toString())
address?.let {
for (i in address.indices) {
val item = address[i]
resultList.add(PlaceDataModel(item.placeId, item.getFullText(StyleSpan(Typeface.BOLD)).toString()))
}
}
filterResults.values = resultList
filterResults.count = resultList.size
}
return filterResults
}
}
}
internal class ViewHolder {
var description: TextView? = null
}
}
getAutocomplete method (you can add in adapter or extention)
fun getAutocomplete(mPlacesClient: PlacesClient, constraint: CharSequence): List<AutocompletePrediction> {
var list = listOf<AutocompletePrediction>()
val token = AutocompleteSessionToken.newInstance()
val request = FindAutocompletePredictionsRequest.builder().setTypeFilter(TypeFilter.ADDRESS).setSessionToken(token).setQuery(constraint.toString()).build()
val prediction = mPlacesClient.findAutocompletePredictions(request)
try {
Tasks.await(prediction, TASK_AWAIT, TimeUnit.SECONDS)
} catch (e: ExecutionException) {
e.printStackTrace()
} catch (e: InterruptedException) {
e.printStackTrace()
} catch (e: TimeoutException) {
e.printStackTrace()
}
if (prediction.isSuccessful) {
val findAutocompletePredictionsResponse = prediction.result
findAutocompletePredictionsResponse?.let {
list = findAutocompletePredictionsResponse.autocompletePredictions
}
return list
}
return list
}
R.layout.layout_item_places
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<androidx.appcompat.widget.AppCompatTextView
android:id="@+id/searchFullText"
style="@style/TextViewGraphikRegular"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/_5sdp"
android:layout_marginEnd="@dimen/_8sdp"
android:ellipsize="end"
android:gravity="center_vertical"
android:maxLines="2"
android:padding="@dimen/_8sdp"
android:text="@{dataModel.fullText}"
android:textColor="@android:color/black"
android:textSize="@dimen/_10ssp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="Ahmedabad" />
</androidx.constraintlayout.widget.ConstraintLayout>
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