android 中的 PlaceAutoCompleteFragment 不显示建议并在输入第一个字母后关闭

PlaceAutoCompleteFragment in android not showing suggestions and closes after entering the first letter

Google Places API 中 Android 的自动完成小部件服务未按预期工作。我已将片段包含在我的 xml 页面中,并将侦听器 activity 添加到我的 onCreate()
然后我开始执行自动完成片段,我单击要搜索的单词的第一个字母,突然没有显示建议,而是 onError() 被执行并关闭。

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <fragment xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:map="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:id="@+id/map"
        android:name="com.google.android.gms.maps.SupportMapFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context="com.akhil.maplocation.MapsActivity" />
    <fragment
        android:id="@+id/place_autocomplete_fragment"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:name="com.google.android.gms.location.places.ui.PlaceAutocompleteFragment"
        />
</RelativeLayout>

主要activity是:

public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {

    private GoogleMap mMap;
    LatLng fromadd;
     @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_maps);
           PlaceAutocompleteFragment autocompleteFragment = (PlaceAutocompleteFragment)
                    getFragmentManager().findFragmentById(R.id.place_autocomplete_fragment);


            autocompleteFragment.setOnPlaceSelectedListener(new PlaceSelectionListener() {
                @Override
                public void onPlaceSelected(Place place) {
                    // TODO: Get info about the selected place.
                    fromadd = place.getLatLng();
                    double lat = fromadd.latitude;
                    double lng = fromadd.longitude;        
                    gotoLocation(lat, lng, 15);
                }

                @Override
                public void onError(Status status) {
                    // TODO: Handle the error.
                    Toast.makeText(getBaseContext(),"failure",Toast.LENGTH_LONG).show();
                }
            });
mMap.setOnMapClickListener(new GoogleMap.OnMapClickListener() {
            @Override
            public void onMapClick(LatLng latLng) {
                MarkerOptions markerOptions = new MarkerOptions();
                markerOptions.position(latLng);
                fromadd = latLng;
                markerOptions.title(latLng.latitude + ":" + latLng.longitude + " " + latLng.toString());
                mMap.clear();
                mMap.animateCamera(CameraUpdateFactory.newLatLng(latLng));
                mMap.addMarker(markerOptions);
            }
        });


        mapFragment.getMapAsync(this);
}

@Override
    public void onMapReady(GoogleMap googleMap) {
        mMap = googleMap;

        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {                
            return;
        }
        mMap.setMyLocationEnabled(true);

}

您可能错过了一个 API 密钥,它是使用 Google 个地点 API 所必需的。查看 this link。当您执行 link 中指定的所有操作时,还将此代码添加到您的 AndroidManifest

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >

    <meta-data
        android:name="com.google.android.geo.API_KEY"
        android:value="YOUR_KEY" />

mMap 在使用 mMap.setOnMapClickListener(.... 之前需要初始化;gotoLocation(lat,lng,15) 必须如下所示:

private void gotoLocation(double lat, double lng, int i) {
                // TODO Auto-generated method stub   

                 Marker myMarker = map.addMarker(new MarkerOptions()
                .icon(BitmapDescriptorFactory.fromResource(R.drawable.home))
                .position(p1)
                .snippet("Lat:" + lat + "Lng:" + lng)
                .title("HOME"));

                 map = ((MapFragment) getFragmentManager()
                        .findFragmentById(R.id.map2)).getMap();
                map.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(lat, lng), i));                  
            }