Serviceが途中で停止している気がするのですが、何が原因でしょうか？どうぞよろしくお願いします。

Serviceで、位置情報を取得して、変更されたら、firebaseに書き込むコードを書いたのですが、
public int onStartCommand(Intent intent, int flags, int startId) {
の中で、startLocation()を呼び出そうとしても呼び出せません。
Serviceが途中で停止している気がするのですが、何が原因でしょうか？

java
1package com.google.android.exoplayer2.demo;
2
3import android.app.Service;
4import android.content.Intent;
5import android.location.Criteria;
6import android.location.LocationManager;
7import android.os.Binder;
8import android.os.IBinder;
9import android.location.LocationListener;
10import android.content.pm.PackageManager;
11import android.location.Location;
12import android.support.v4.app.ActivityCompat;
13import android.os.Bundle;
14import android.util.Log;
15import com.google.android.gms.common.ConnectionResult;
16import com.google.firebase.database.ChildEventListener;
17import com.google.firebase.database.DataSnapshot;
18import com.google.firebase.database.DatabaseError;
19import com.google.firebase.database.DatabaseReference;
20import com.google.firebase.database.FirebaseDatabase;
21import com.google.firebase.auth.FirebaseAuth;
22
23public class GpsService extends Service implements LocationListener{
24
25    private boolean mResolvingError = false;
26    final FirebaseDatabase database = FirebaseDatabase.getInstance();
27    private LocationListener sensorEventListener; // onPause()
28
29    public class GpsServiceBinder extends Binder {
30        public GpsService getService() {
31            return GpsService.this;
32        }
33    }
34
35    @Override
36    public void onCreate() {
37        super.onCreate();
38
39        Log.d("onCreate()","呼ばれた");
40    }
41
42
43
44    public GpsService() {
45    }
46
47    //serviceだからいらないかも removeupdatesは必要
48//    @Override
49//    protected void onPause(){
50//        super.onPause();
51//        locationManager.removeUpdates(this);
52    // mLocationManager.removeUpdates(listener);
53//    }
54
55    protected void initLocationService() {
56        Log.v("initLocationService()", "呼ばれた");
57
58        if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
59            return;
60        }
61        if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
62            return;
63        }
64
65        Criteria criteria = new Criteria();
66        criteria.setAccuracy(Criteria.ACCURACY_FINE); //setAccuracyは内部では、https://stackoverflow.com/a/17874592/1709287の用にHorizontalAccuracyの設定に変換されている。
67        criteria.setPowerRequirement(Criteria.POWER_HIGH);
68        criteria.setAltitudeRequired(false);
69        criteria.setSpeedRequired(true);
70        criteria.setCostAllowed(true);
71        criteria.setBearingRequired(false);
72        criteria.setHorizontalAccuracy(Criteria.ACCURACY_HIGH);
73        criteria.setVerticalAccuracy(Criteria.ACCURACY_HIGH);
74
75//        locationManager.registerGnssStatusCallback()
76//        locationManager.requestLocationUpdates(gpsFreqInMillis, gpsFreqInDistance, criteria, this, null);
77
78        LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
79        String bestProvider = locationManager.getBestProvider(criteria, true);
80        locationManager.requestLocationUpdates(bestProvider, 6000, 1, this);
81    }
82
83            @Override
84            public void onLocationChanged(Location location) {
85
86                Log.v("onLocationChanged", "呼ばれた");
87                refreshGeoLocation(location);
88            }
89
90            //LocationListenerのメソッド
91            @Override
92            public void onStatusChanged(String provider, int status, Bundle extras) {
93
94            }
95
96            @Override
97            public void onProviderEnabled(String provider) {
98
99            }
100
101            @Override
102            public void onProviderDisabled(String provider) {
103
104            }
105
106
107        //ここまで
108
109        // 位置情報のリスナーを取得して登録する
110        //sensorEventListener = new GpsLocationListener(sensorValueTextView);
111
112
113//    public class LocationServiceBinder extends Binder {
114//        public com.google.android.exoplayer2.demo.GpsService getService() {
115//            return com.google.android.exoplayer2.demo.GpsService.this;
116//        }
117//    }
118    protected void refreshGeoLocation(Location location){
119        Log.v("refreshGeoLocation","呼ばれた");
120        String user = FirebaseAuth.getInstance().getCurrentUser().getUid();
121        DatabaseReference ref = database.getReference().child("users").child(user);
122        DatabaseReference latitudeRef = ref.child("latitude");
123        DatabaseReference longitudeRef = ref.child("longitude");
124        latitudeRef.setValue(location.getLatitude());
125        longitudeRef.setValue(location.getLongitude());
126    }
127
128    @Override
129    public IBinder onBind(Intent intent) {
130        Log.v("onBind","呼ばれた");
131        throw new UnsupportedOperationException("Not yet implemented");
132    }
133
134    private void startLocation() {
135
136        Log.d("StartLocation","呼ばれた");
137        initLocationService();
138    }
139
140    private void stopLocation() {
141        Log.d("stopLocation","呼ばれた");
142        //firebase.auth().signOut();これでログアウトはできるが、ログアウトはしない
143        database.goOffline();
144    }
145
146    //private final LocationListener listener = new LocationListener() {
147    @Override
148    public int onStartCommand(Intent intent, int flags, int startId) {
149        Log.d("onStartCommand","呼ばれた");
150
151        String check =intent.getStringExtra("start/stop");
152
153        if(check.equals("start")){
154            startLocation();
155            Log.d("StartLocation","呼ぶ");
156        }else if(check.equals("stop")){
157            stopLocation();
158            Log.d("StopLocation","呼ぶ");
159        }
160
161        return super.onStartCommand(intent, flags, startId);
162    }
163
164    @Override
165    public void onDestroy() {
166        super.onDestroy();
167    }
168
169    public void movieAdapter(DatabaseReference ref) {
170        ChildEventListener childEventListener = new ChildEventListener() {
171
172            @Override
173            public void onChildAdded(DataSnapshot dataSnapshot, String s) {
174
175            }
176
177            //ここで、firebaseの変化を取得して、Toastを表示する
178            @Override
179            public void onChildChanged(DataSnapshot dataSnapshot, String previousChildName) {
180                //```
181                Log.v("onChildChanged()","呼ばれた");
182            }
183
184            @Override
185            public void onChildRemoved(DataSnapshot dataSnapshot) {
186                Log.v("onChildRemoved()","呼ばれた");
187            }
188
189            @Override
190            public void onChildMoved(DataSnapshot dataSnapshot, String s) {
191                Log.v("onChildMoved()","呼ばれた");
192
193            }
194
195            @Override
196            public void onCancelled(DatabaseError databaseError) {
197                Log.v("onCancelled()","呼ばれた");
198            }
199        };
200        ref.addChildEventListener(childEventListener);
201    }
202}
203
204