使用 setLocation 的 Geofire 错误

Question

我正在尝试学习 geofire 我尝试实现 SFVehicle 应用程序，但它显示错误，请您帮忙，这是我项目的关键部分

public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {

    private GoogleMap mMap;
    private static final GeoLocation INITIAL_CENTER = new GeoLocation(37.7789, -122.4017);
    private static final int INITIAL_ZOOM_LEVEL = 14;
    private static String GEO_FIRE_DB = "https://learngoef.firebaseio.com";
    private static String GEO_FIRE_REF = GEO_FIRE_DB+ "/_geofire";



    private Circle searchCircle;
    private GeoFire geoFire;
    private GeoQuery mGeoQuery;

    private Map<String,Marker> markers;



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_maps);
        // Obtain the SupportMapFragment and get notified when the map is ready to be used.
        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);


        FirebaseDatabase database = FirebaseDatabase.getInstance();
        geoFire = new GeoFire(database.getReference().child("geofire_location"));

        String key = geoFire.getDatabaseReference().push().getKey();
        geoFire.setLocation(key,new GeoLocation(37.7789, -122.4017));




    }

这是我得到的错误：

java.lang.NoSuchMethodError: 没有虚拟方法 setValue(Ljava/lang/Object;Ljava/lang/Object;)Lcom/google/firebase/tasks/Task; 在 Lcom/google/firebase/database/DatabaseReference 类中；或其超级 类（声明 'com.google.firebase.database.DatabaseReference' 出现在 /data/app/com.myapps.learninggeofire-2/split_lib_dependencies_apk.apk)

Answer 1

如果在它的参数中添加一个监听器就可以正常工作了。As

 geoFire = new GeoFire(database.getReference().child("geofire_location"));

 String key = geoFire.getDatabaseReference().push().getKey();
 geoFire.setLocation(key,new GeoLocation(37.7789, -122.4017)),new 
 GeoFire.CompletionListener(){
            @Override
            public void onComplete(String key, DatabaseError error) {
                //Do some stuff if you want to
            }
        });

我想这可能对你有帮助。

Answer 2

我花了 4 个小时来解决这个错误

 geoFire.setLocation(userId, new GeoLocation(37.7789, -122.4017)),new 
 GeoFire.CompletionListener(){
            @Override
            public void onComplete(String key, DatabaseError error) {
                Log.e(TAG, "GeoFire Complete");
            }
        });

在我将 firebase 依赖项更改为 16.0.4 而不是 16.0.1 之前它仍然无法正常工作

Answer 3

将您的 geofire 依赖项从最新版本降级到

实现'com.firebase:geofire-android:2.1.1'

Answer 4

阅读 - https://github.com/firebase/geofire-java 它的支持——实现'com.firebase:geofire-java:3.0.0'（版本）

//----------------------------------------代码---- ---------------------------------------

firebaseAuth = FirebaseAuth.getInstance();
firebaseDatabase = FirebaseDatabase.getInstance();
firebaseUser = firebaseAuth.getCurrentUser();


String userid = firebaseUser.getUid();
DatabaseReference ref = firebaseDatabase.getReference("Active Users");
GeoFire geoFire = new GeoFire(ref);


geoFire.setLocation(userid, new GeoLocation(location.getLatitude(), location.getLongitude()), new GeoFire.CompletionListener() {
    @Override
    public void onComplete(String key, DatabaseError error) {
        if (error!=null)
        {
            Toast.makeText(client_dashboard.this,"Can't go Active",Toast.LENGTH_SHORT).show();
        }
        Toast.makeText(client_dashboard.this,"You are Active",Toast.LENGTH_SHORT).show();
    }
});