应用程序在融合位置的帮助下请求位置更新时崩溃

i是在

的帮助下请求位置更新

LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, 
locationRequest, locationListener);

但是，正如我试图在swtich onclicklistener上提到的那样，它崩溃了。但是，没有错误的Android Studio本身。

我已经添加了此功能的一部分，以索取合并位置，粗糙位置和互联网的权限。在请求更新之前，我什至尝试将Google API客户端连接喜欢。，

if(googleApiClient.isConnected){
LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, 
locationRequest, locationListener);
}else{
buildGoogleApiClient();
}

，但我无法解决错误。使用Fused位置提供商API删除位置请求也导致该应用程序崩溃。

我的清单文件具有如下所示的代码。如您所见，我已经要求重新定位权限

我的XML文件为

<RelativeLayout
    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="match_parent"
    >

    <fragment
        android:id="@+id/map"
        android:name="com.google.android.gms.maps.SupportMapFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        tools:context="com.matt.dumate.Welcome" />
    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar3"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:background="#0064a2"
        android:weightSum="2">
        <RelativeLayout
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="start">
            <com.github.glomadrian.materialanimatedswitch.MaterialAnimatedSwitch
                android:id="@+id/locationSwitch"
                android:layout_width="20dp"
                android:layout_height="wrap_content"
                android:layout_alignParentStart="true"
                android:layout_centerInParent="true"
                android:layout_marginStart="0dp"
                android:layout_marginTop="0dp"
                app:ball_press_color="@android:color/white"
                app:ball_release_color="@color/ballReleaseColor"
                app:base_press_color="@color/basePressColor"
                app:base_release_color="@color/baseReleaseColor"
                app:icon_press="@drawable/ic_location_on"
                app:icon_release="@drawable/ic_location_off" />
        </RelativeLayout>
    </android.support.v7.widget.Toolbar>
    <Button
        android:id="@+id/bookingButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/toolbar3"
        android:layout_alignParentStart="true"
        android:layout_marginBottom="5dp"
        android:layout_marginStart="90dp"
        android:layout_marginTop="5dp"
        android:background="@drawable/bookingbutton"
        android:gravity="center"
        android:text="@string/booking"
        android:textColor="@android:color/white" />

</RelativeLayout>

这是我的Java文件。我也在学习创建一个像Uber这样的应用程序。

package com.matt.dumate;
import com.firebase.geofire.GeoFire;
import com.firebase.geofire.GeoLocation;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.location.FusedLocationProviderApi;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationManager;
import android.os.Build;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.design.widget.Snackbar;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.support.v4.content.ContextCompat;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import com.github.glomadrian.materialanimatedswitch.MaterialAnimatedSwitch;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
public class Welcome extends FragmentActivity implements OnMapReadyCallback,
    GoogleApiClient.ConnectionCallbacks,
    GoogleApiClient.OnConnectionFailedListener,
    LocationListener {
MaterialAnimatedSwitch location_switch;
SupportMapFragment mapFragment;
private Button btnBooking;
private Location lastLocation;
private GoogleApiClient.OnConnectionFailedListener onConnectionFailedListener;
private LocationRequest locationRequest;
private LocationListener locationListener;
private LocationManager locationManager;
private Marker marker;
private GoogleMap mMap;
private GoogleApiClient googleApiClient;
private final int RequestCode = 10;
private final int ResourceCode = 11;
private DatabaseReference databaseReference;
GeoFire geoFire;

@Override
protected void onCreate(Bundle savedInstanceState) {
    checkLocationPermission();
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_welcome);
    mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
    mapFragment.getMapAsync(this);
    locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
    /***/
    databaseReference = FirebaseDatabase.getInstance().getReference("Drivers");
    geoFire = new GeoFire(databaseReference);
    setupLocation();
}
@Override
public void onMapReady(GoogleMap googleMap) {
    setupUiViews();
    mMap = googleMap;
    location_switch.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if(location_switch.isChecked()){
                displayLocation();
                Snackbar.make(mapFragment.getView(), "You Are Online", Snackbar.LENGTH_SHORT).show();
            }else {
                stopLocationUpdates();
                Snackbar.make(mapFragment.getView(), "You Are Offline", Snackbar.LENGTH_SHORT).show();
                if (marker != null) {
                    marker.remove();
                }
            }
        }
    });
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    switch (requestCode) {
        case RequestCode:
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                if (checkPlayServices()){
                    buildGoogleApiClient();
                    createLocationRequest();
                    if (location_switch.isChecked()){
                        displayLocation();
                    }
                }
            }
    }
}
public void checkLocationPermission() {
    if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED)
    {
        if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.ACCESS_FINE_LOCATION))
        {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, RequestCode);
        } else {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, RequestCode);
        }
    } else {
        Toast.makeText(this, "Location Permissions Granted", Toast.LENGTH_SHORT).show();
    }
}
@Override
public void onConnected(@Nullable Bundle bundle) {
    locationRequest = LocationRequest.create()
            .setInterval(1000)
            .setFastestInterval(500)
            .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    startLocationUpdates();
    displayLocation();
}
@Override
public void onConnectionSuspended(int i) {
    googleApiClient.connect();
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
}
@Override
public void onLocationChanged(Location location) {
    lastLocation = location;
    displayLocation();
}
protected synchronized void buildGoogleApiClient() {
    googleApiClient = new GoogleApiClient.Builder(this)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .addApi(LocationServices.API)
            .build();
    googleApiClient.connect();
}
private void setupUiViews() {
    btnBooking = findViewById(R.id.bookingButton);
    location_switch = findViewById(R.id.locationSwitch);
}
private void displayLocation() {
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        return;
    }
    lastLocation = LocationServices.FusedLocationApi.getLastLocation(googleApiClient);
    if (lastLocation != null ){
        if(location_switch.isChecked()){
            final Double lat = lastLocation.getLatitude();
            final Double lng = lastLocation.getLongitude();
            geoFire.setLocation(FirebaseAuth.getInstance().getCurrentUser().getUid(), new GeoLocation(lat, lng), new GeoFire.CompletionListener() {
                @Override
                public void onComplete(String key, DatabaseError error) {
                    if (marker != null) {
                        marker.remove();
                        marker = mMap.addMarker(new MarkerOptions().position(new LatLng(lat, lng)).icon(BitmapDescriptorFactory.fromResource(R.drawable.carmarker)).title("You"));
                        mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(lat, lng), 15.0f));
                    }else{
                        marker = mMap.addMarker(new MarkerOptions().position(new LatLng(lat, lng)).icon(BitmapDescriptorFactory.fromResource(R.drawable.carmarker)).title("You"));
                        mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(lat, lng), 15.0f));
                }
                }
            });
        }else{
            Toast.makeText(this, "Cannot Get Location Updates", Toast.LENGTH_SHORT).show();
        }
    }else{
        Log.d("Error", "Cannot Get Your Location");
    }
}
private void setupLocation() {
    if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED)
    {
        if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.ACCESS_FINE_LOCATION))
        {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, RequestCode);
        } else {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, RequestCode);
        }
    }else{
        if (checkPlayServices()){
            buildGoogleApiClient();
            createLocationRequest();
        }
    }
}
private void createLocationRequest() {
    locationRequest = LocationRequest.create()
            .setInterval(1500)
            .setFastestInterval(500)
            .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
            .setSmallestDisplacement(0);
}
private boolean checkPlayServices(){
    int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
    if (resultCode != ConnectionResult.SUCCESS){
        if (GooglePlayServicesUtil.isUserRecoverableError(resultCode))
            GooglePlayServicesUtil.getErrorDialog(resultCode, this, ResourceCode).show();
        else {
            Toast.makeText(this, "This Device Is Not Supported", Toast.LENGTH_SHORT).show();
            finish();
        }return false;
    }
    return true;
}
private void stopLocationUpdates() {
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        return;
    }
    //LocationServices.FusedLocationApi.removeLocationUpdates(googleApiClient, locationListener);
}
private void startLocationUpdates() {
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        return;
    }
    //LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, locationListener);
}
 }

您在尚未初始化的locationListener的帮助下请求位置更新。您可以通过在代码的给定语句中初始化位置侦听器初始化位置侦听器或将locationListener更改为this来解决问题。

LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, locationListener);

to：

LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, this);

融合位置服务的实现已更改，您可以在没有GoogleApiClient的情况下执行此操作。您可以尝试这样，

将所需的位置库添加到build.grade

implementation 'com.google.android.gms:play-services-location:15.0.0'

将所需的权限添加到清单

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

Welcome活动
内部

public class Welcome extends AppCompatActivity implements OnMapReadyCallback {
    ...
    ...
    private FusedLocationProviderClient mFusedLocationClient;
    private LocationRequest mLocationRequest = LocationRequest.create()
            .setInterval(1000)
            .setFastestInterval(500)
            .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    private LocationCallback mLocationCallback = new LocationCallback() {
        @Override
        public void onLocationResult(LocationResult result) {
            super.onLocationResult(result);
            for (Location location : result.getLocations())
                if (location != null) {
                    displayLocation(result.getLastLocation());
                    break;
                }
        }
    };
    ...
    ...
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_welcome);
        ...
        ...
        // Get fussed location instance
        mFusedLocationClient = LocationServices.getFusedLocationProviderClient(this);
        ...
        ...
    }
    @Override
    public void onMapReady(GoogleMap googleMap) {
        ...
        ...
        // Check if location permission is granted
        if (!hasLocationPermission()) {
            // Request location permission
        } else {
            // Get the last known location
            startLocationUpdate();
        }
    }
    private void startLocationUpdate() {
        try {
            mFusedLocationClient.getLastLocation().addOnSuccessListener(new OnSuccessListener<Location>() {
                @Override
                public void onSuccess(Location location) {
                    if (location != null) {
                        displayLocation(location);
                    } else {
                    mFusedLocationClient.requestLocationUpdates(mLocationRequest, mLocationCallback, null);
                    }
                }
            });
        } catch (SecurityException ex) {
            ex.printStackTrace();
        }
    }
    private boolean hasLocationPermission() {
        return ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
            != PackageManager.PERMISSION_GRANTED
            && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION)
            != PackageManager.PERMISSION_GRANTED;
    }
    private void stopLocationUpdate() {
        mFusedLocationClient.removeLocationUpdates(mLocationCallback);
    }
    private void displayLocation(Location location) {
        // do something
        ...
        ...
    }
}

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