How To Start Service Again When App Restarts And User Already Granted Location Access

I am able to implement a simple gpsTracker using a service that runs on background like this: public class MyService extends Service { private static final String TAG = 'BOOMBO

Solution 1:

Well You have to start the service in two cases:-

1) When user grant the location access.

2)When user already granted the permission after launching application again.

So you have to handle both the ways

Try this.

publicstatic final int MY_PERMISSIONS_REQUEST_LOCATION = 99;

public boolean checkLocationPermission() {
    if (ContextCompat.checkSelfPermission(this,
            Manifest.permission. ACCESS_FINE_LOCATION)
            != PackageManager.PERMISSION_GRANTED) {

        // Should we show an explanation?if (ActivityCompat.shouldShowRequestPermissionRationale(this,
                Manifest.permission. ACCESS_FINE_LOCATION)) {

            // Show an explanation to the user *asynchronously* -- don't block// this thread waiting for the user's response! After the user// sees the explanation, try again to request the permission.new AlertDialog.Builder(this)
                    .setTitle(R.string.title_location_permission)
                    .setMessage(R.string.text_location_permission)
                    .setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
                        @Override
                        publicvoidonClick(DialogInterface dialogInterface, int i) {
                            //Prompt the user once explanation has been shown
                            ActivityCompat.requestPermissions(MainActivity.this,
                                    new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
                                    MY_PERMISSIONS_REQUEST_LOCATION);
                        }
                    })
                    .create()
                    .show();


        } else {
            // No explanation needed, we can request the permission.
            ActivityCompat.requestPermissions(this,
                    new String[]{Manifest.permission. ACCESS_FINE_LOCATION},
                    MY_PERMISSIONS_REQUEST_LOCATION);
        }
        returnfalse;
    } else {
        returntrue;
    }
}

@Override
publicvoidonRequestPermissionsResult(int requestCode,
                                       String permissions[], int[] grantResults) {
    switch (requestCode) {
        case MY_PERMISSIONS_REQUEST_LOCATION: {
            // If request is cancelled, the result arrays are empty.if (grantResults.length > 0
                    && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                // permission was granted, yay! Do the// location-related task you need to do.if (ContextCompat.checkSelfPermission(this,
                        Manifest.permission. ACCESS_FINE_LOCATION)
                        == PackageManager.PERMISSION_GRANTED) {


                    //start your service here
                   startService(new Intent(this, MyService.class)); 
                }

            } else {

                // permission denied, boo! Disable the// functionality that depends on this permission.

            }
            return;
        }

    }
}

The in OnResume() do this

@OverrideprotectedvoidonResume() {
    super.onResume();

    if (checkLocationPermission()) {
       if (ContextCompat.checkSelfPermission(this,
           Manifest.permission. ACCESS_FINE_LOCATION)
           == PackageManager.PERMISSION_GRANTED) {
                  //start your service herestartService(newIntent(this, MyService.class)); 

       }
    }

}

No need to Call this Method in onCreate()

publicvoidinitService(View view){
       // no need to initialize permission and service class here
    }