位置服务更新

Question

我试图找到用户的位置并更新我的Firebase数据库中的值。但位置似乎没有更新。我无法识别错误。服务已经开始，但位置似乎没有更新。

我的服务如下：

public class MyLocation extends Service { 

Firebase rootRef,child_ref; 
LocationManager locationManager; 
LocationListener locationListener; 

public MyLocation() { 
    super(); 

} 

@Override 
public void onCreate() { 
    super.onCreate(); 
    rootRef = new Firebase(Constants.FIREBASE_URL); 
    child_ref = rootRef.child(rootRef.getAuth().getUid()); 

    locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); 
    locationListener = new LocationListener() { 
     @Override 
     public void onLocationChanged(Location location) { 

      child_ref.setValue(location.getLatitude() + " : " + location.getLongitude()); 
      UserPojo userPojo=new UserPojo(location.getLatitude()+" : "+location.getLongitude()); 
      child_ref.child("location").setValue(userPojo); 
      Log.i("location",location.getLatitude()+" : "+location.getLongitude()); 

     } 

     @Override 
     public void onStatusChanged(String provider, int status, Bundle extras) { 

     } 

     @Override 
     public void onProviderEnabled(String provider) { 

     } 

     @Override 
     public void onProviderDisabled(String provider) { 

     } 
    }; 
    try { 
     locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000, 0, locationListener); 
    } 
    catch (SecurityException e) 
    { 
     e.printStackTrace(); 
    } 
} 

@Nullable 
@Override 
public IBinder onBind(Intent intent) { 
    return null; 
} 
} 

我的POJO类如下：

public class UserPojo { 

String uname; 
String email; 
String location; 


public UserPojo() { 
} 

public UserPojo(String uname, String email) { 
    this.uname = uname; 
    this.email = email; 

} 

public UserPojo(String location) { 
    this.location = location; 
} 

public String getUname() { 
    return uname; 
} 

public String getEmail() { 
    return email; 
} 

public String getLocation() { 
    return location; 
} 
} 

我的服务调用活动如下：

public class MembersListActivityFragment extends Fragment { 
Intent intent; 

private AuthData auth; 

public MembersListActivityFragment() { 
} 

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 

    View rootView= inflater.inflate(R.layout.fragment_members_list, container, false); 

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { 
     requestPermissions(new String[]{ 
       Manifest.permission.INTERNET,Manifest.permission.ACCESS_FINE_LOCATION,Manifest.permission.ACCESS_COARSE_LOCATION 
     },10); 
    } 
Firebase firebase=new Firebase(Constants.FIREBASE_URL); 
    auth=firebase.getAuth(); 

    Toast.makeText(getActivity(),auth.getUid(),Toast.LENGTH_LONG).show(); 




return rootView; 
} 


private boolean isMyServiceRunning(Class<?> serviceClass) { 
    ActivityManager manager = (ActivityManager)getActivity().getSystemService(Context.ACTIVITY_SERVICE); 
    for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) { 
     if (serviceClass.getName().equals(service.service.getClassName())) { 

      return true; 
     } 
    } 
    return false; 
} 







@Override 
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { 
    super.onRequestPermissionsResult(requestCode, permissions, grantResults); 
    switch (requestCode){ 
     case 10:if(grantResults.length>0&&grantResults[0]== PackageManager.PERMISSION_GRANTED) 
     { 
      intent=new Intent(getActivity(),MyLocation.class); 
      getActivity().startService(intent); 

      boolean service_enabled= isMyServiceRunning(MyLocation.class); 
      Log.i("service ",service_enabled+""); 



     } 
    } 
} 



@Override 
public void onDestroy() { 
    super.onDestroy(); 
getActivity().stopService(intent); 
} 
} 

我的清单文件如下：

<?xml version="1.0" encoding="utf-8"?> 

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

<application 
    android:name=".Family" 
    android:allowBackup="true" 
    android:icon="@mipmap/ic_launcher" 
    android:label="@string/app_name" 
    android:supportsRtl="true" 
    android:theme="@style/AppTheme"> 
    <activity android:name=".SignUpActivity" /> 
    <activity android:name=".SignInAcivity"> 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
    <activity 
     android:name=".MembersListActivity" 
     android:label="@string/title_activity_members_list" 
     android:theme="@style/AppTheme.NoActionBar"></activity> 
    <service android:name=".MyLocation" android:enabled="true"></service> 
</application> 

</manifest> 

Answer 1

看来你有没有检查都看到，如果你有GPS或可用的网络位置服务。

还要确保您在清单中拥有正确的权限。

本教程可以帮助：http://www.androidhive.info/2012/07/android-gps-location-manager-tutorial/