places.getLatLng()返回null，但places.getName()不返回null。该怎么办？

Question

我一直在尝试点击自动完成中的某个地点后获得latlng，奇怪的是places.getName()正常工作，但place.getLatLng()返回null。我该怎么办来解决这个问题？我是google地图和地点API的新手！

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == AUTOCOMPLETE_REQUEST_CODE_FROM) {
        if (resultCode == RESULT_OK) {
            Place place = Autocomplete.getPlaceFromIntent(data);
            Log.i("shipadd", "Place: " + place.getName() + ", " + place.getId());
            from_edit_txt.setText(place.getName());
            origin = place.getLatLng();
            Log.e("origin_destarray", "" + place.getLatLng());
        } else if (resultCode == AutocompleteActivity.RESULT_ERROR) {
            // TODO: Handle the error.
            Status status = Autocomplete.getStatusFromIntent(data);
            Log.i("shipadd", status.getStatusMessage());
        } else if (resultCode == RESULT_CANCELED) {
            // The user canceled the operation.
        }
    } else if (requestCode == AUTOCOMPLETE_REQUEST_CODE_TO) {
        if (resultCode == RESULT_OK) {
            Place place = Autocomplete.getPlaceFromIntent(data);
            Log.i("shipadd", "Place: " + place.getAddress() + ", " + place.getId());
            to_edit_txt.setText(place.getName());

我希望以下代码能够返回我在自动完成活动中选择的地点的纬度和经度。

- Aryan Soni

---

请确保您已启用定位设置。 - primo

位置设置已启用。 - Aryan Soni

Answer 1

以前，Android的地点SDK是通过Google Play服务提供的。 Google Play服务版的Android地点SDK已被弃用，Google将在2019年7月29日关闭它。

但是，新版本的Android地点SDK被分发为静态客户端库。
新SDK客户端库的依赖关系

implementation 'com.google.android.libraries.places:places:1.0.0'

您可以使用以下两种方法之一将Google地点自动完成添加到Android应用程序中：

 1) Either embed a AutocompleteSupportFragment
 OR
 2) Use an intent to launch the autocomplete activity. 

我通过嵌入一个AutocompleteSupportFragment来创建了一个演示应用程序：

package com.places_api_demo;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
import java.util.Arrays;

import com.google.android.gms.common.api.Status;
import com.google.android.libraries.places.api.model.Place;
import com.google.android.libraries.places.api.net.PlacesClient;
import com.google.android.libraries.places.widget.AutocompleteSupportFragment;
import com.google.android.libraries.places.widget.listener.PlaceSelectionListener;
import com.google.android.libraries.places.api.Places;
import static com.google.android.libraries.places.api.model.Place.Field.LAT_LNG;


public class MainActivity extends AppCompatActivity {
String TAG = "placeautocomplete";
TextView txtView;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    txtView = findViewById(R.id.txtView);

    // Initialize Places.
    Places.initialize(getApplicationContext(), "REPLACE YOUR API KEY HERE");
    // Create a new Places client instance.
    PlacesClient placesClient = Places.createClient(this);

    // Initialize the AutocompleteSupportFragment.
    AutocompleteSupportFragment autocompleteFragment = (AutocompleteSupportFragment)
            getSupportFragmentManager().findFragmentById(R.id.autocomplete_fragment);

    // Specify the types of place data to return.
    autocompleteFragment.setPlaceFields(Arrays.asList(Place.Field.ID, Place.Field.NAME, Place.Field.LAT_LNG));

    // Set up a PlaceSelectionListener to handle the response.
    autocompleteFragment.setOnPlaceSelectedListener(new PlaceSelectionListener() {
        @Override
        public void onPlaceSelected(Place place) {
            // TODO: Get info about the selected place.
            txtView.setText(place.getName()+"\n"+place.getId()+"\n"+ place.getLatLng());
            Log.i(TAG, "Place: " + place.getName() + ", " +  place.getLatLng());
        }

        @Override
        public void onError(Status status) {
            // TODO: Handle the error.
            Log.i(TAG, "An error occurred: " + status);
        }
    });
}
}

同时指定要返回的地点数据类型很重要

autocompleteFragment.setPlaceFields(Arrays.asList(Place.Field.LAT_LNG, Place.Field.ID, Place.Field.NAME));

有关地点数据字段的更多详细信息，请参阅此处

- Rakhi Dhavale

---

谢谢，我没有提到Place.Field.LAT_LNG，我的错，感谢你的帮助！你是救命恩人。 - Aryan Soni

Answer 2

我曾经遇到同样的问题，最后我发现我们需要请求Place.Field.LAT_LNG。 此函数将打开自动完成功能。

private void openGetLocation() {

    // Set the fields to specify which types of place data to
    // return after the user has made a selection.
    List<Place.Field> fields = Arrays.asList(Place.Field.LAT_LNG,Place.Field.ID, Place.Field.NAME);

    // Start the autocomplete intent.
    Intent intent = new Autocomplete.IntentBuilder(AutocompleteActivityMode.OVERLAY, fields)
            .build(this);
    startActivityForResult(intent, AUTOCOMPLETE_REQUEST_CODE);
}

在此获取地点详细信息 onActivityResult。

 @Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (resultCode == RESULT_OK && requestCode == 1) {
        Toast.makeText(this, data.toString(), Toast.LENGTH_SHORT).show();
        Place place = Autocomplete.getPlaceFromIntent(data);
        locationEd.setText(place.getLatLng().toString());
    } else if (resultCode == AutocompleteActivity.RESULT_ERROR) {
        Status status = Autocomplete.getStatusFromIntent(data);
        Toast.makeText(this, status.getStatusMessage(), Toast.LENGTH_SHORT).show();
    }
}

注意：

这里我请求了三个东西：Place.Field.LAT_LNG，Place.Field.ID，Place.Field.NAME

- Zeeshan Ali