问题
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.
回答1:
New Version 2019
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();
}
}
}
回答2:
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);
回答3:
I used this adapter class after enabling Google Places API:-
public class PlaceAutoCompleteAdapter
extends ArrayAdapter<AutocompletePrediction> implements Filterable {
private static final String TAG = "PlaceAutoCompleteAd";
private static final CharacterStyle STYLE_BOLD = new StyleSpan(Typeface.BOLD);
/**
* Current results returned by this adapter.
*/
private ArrayList<AutocompletePrediction> mResultList;
/**
* Handles autocomplete requests.
*/
private GoogleApiClient mGoogleApiClient;
/**
* The bounds used for Places Geo Data autocomplete API requests.
*/
private LatLngBounds mBounds;
/**
* The autocomplete filter used to restrict queries to a specific set of place types.
*/
private AutocompleteFilter mPlaceFilter;
/**
* Initializes with a resource for text rows and autocomplete query bounds.
*
* @see android.widget.ArrayAdapter#ArrayAdapter(android.content.Context, int)
*/
public PlaceAutoCompleteAdapter(Context context, GoogleApiClient googleApiClient,
LatLngBounds bounds, AutocompleteFilter filter) {
super(context, android.R.layout.simple_expandable_list_item_2, android.R.id.text1);
mGoogleApiClient = googleApiClient;
mBounds = bounds;
mPlaceFilter = filter;
}
/**
* Sets the bounds for all subsequent queries.
*/
public void setBounds(LatLngBounds bounds) {
mBounds = bounds;
}
/**
* Returns the number of results received in the last autocomplete query.
*/
@Override
public int getCount() {
return mResultList.size();
}
/**
* Returns an item from the last autocomplete query.
*/
@Override
public AutocompletePrediction getItem(int position) {
return mResultList.get(position);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = super.getView(position, convertView, parent);
// Sets the primary and secondary text for a row.
// Note that getPrimaryText() and getSecondaryText() return a CharSequence that may contain
// styling based on the given CharacterStyle.
AutocompletePrediction item = getItem(position);
TextView textView1 = (TextView) row.findViewById(android.R.id.text1);
TextView textView2 = (TextView) row.findViewById(android.R.id.text2);
textView1.setText(item.getPrimaryText(STYLE_BOLD));
textView2.setText(item.getSecondaryText(STYLE_BOLD));
return row;
}
/**
* 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();
// We need a separate list to store the results, since
// this is run asynchronously.
ArrayList<AutocompletePrediction> filterData = new ArrayList<>();
// Skip the autocomplete query if no constraints are given.
if (constraint != null) {
// Query the autocomplete API for the (constraint) search string.
filterData = getAutocomplete(constraint);
}
results.values = filterData;
if (filterData != null) {
results.count = filterData.size();
} else {
results.count = 0;
}
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.
mResultList = (ArrayList<AutocompletePrediction>) results.values;
notifyDataSetChanged();
} else {
// The API did not return any results, invalidate the data set.
notifyDataSetInvalidated();
}
}
@Override
public CharSequence convertResultToString(Object resultValue) {
// Override this method to display a readable result in the AutocompleteTextView
// when clicked.
if (resultValue instanceof AutocompletePrediction) {
return ((AutocompletePrediction) resultValue).getFullText(null);
} else {
return super.convertResultToString(resultValue);
}
}
};
}
/**
* 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;
}
}
I am also aware of this given video link
回答4:
In Kotlin
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" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <fragment android:id="@+id/mapLocation" android:name="com.pooltrader.util.customview.WorkaroundMapFragment" 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" style="@style/TextViewCircularstdBold" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_weight="0.9" android:drawableEnd="@drawable/ic_icon_search_addpost" 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/_11ssp" app:layout_constraintStart_toStartOf="@+id/mapLocation" app:layout_constraintEnd_toEndOf="@+id/mapLocation" app:layout_constraintBottom_toBottomOf="parent"/>In Activity
class PostPoolActivity :AppCompatActivity(), OnMapReadyCallback{ private var mMap: GoogleMap? = null private var placeAdapter: PlaceArrayAdapter? = null override fun onPostCreate(savedInstanceState: Bundle?) { 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()) } } } }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" />
来源：https://stackoverflow.com/questions/54668523/how-to-implement-google-places-autocomplete-programmatically