Why is Application crashing with lollipop but working with kitkat

Question

I am having a problem running this code on newer phone such as 5.1.1

while running it on 4.4 android, its working, while trying on new devices , as user logins into account, the application crash

what the problem can be?

You don't have to read the codes down because i put it just for reference

I am currently making a carbon footprint application and the system should verify the user type of vehicle from his profile

how is this code working on kitkat but not on lollipop?

public class HomePage extends AppCompatActivity
    implements NavigationView.OnNavigationItemSelectedListener, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener{
TextView textViewMovemnet;
EditText editTextDistance, editTextSpeed, editTextTimeInterval;
Button buttonHistory;

LocationManager locationManager;
GoogleApiClient mLocationClient;
LocationListener mListener;

String vehicle, vehicleCat;

double lat, lon;

double carbonDioxideVal;

double distance, speed;

double carbonFootprint;

double x1, x2, y1, y2, t1, t2;
double x_Diff, y_Diff, timeInterval;


double total_TimeIntervals = 0;
double total_DistanceMoved = 0;
double avg_Speed = 0;


CountDownTimer timer;
double finishTime;

String userMail;

DatabaseReference dbref;

DatabaseReference dbref_Profile;

double bicycle[] = {10, 15};
double motorcycle[] = {15, 100};
double car[] = {30, 120};
double bus[] = {25, 80};
double truck[] = {25, 40};
double metro[] = {15, 40};



//////////////


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_home_page);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    textViewMovemnet = (TextView) findViewById(R.id.textViewMovement);
    editTextDistance = (EditText) findViewById(R.id.editTextDistance);
    editTextSpeed = (EditText) findViewById(R.id.editTextSpeed);
    editTextTimeInterval = (EditText) findViewById(R.id.editTextTimeInterval);

    buttonHistory = (Button) findViewById(R.id.buttonHistory);

    dbref = FirebaseDatabase.getInstance().getReference().child("UserTrackingData");

    dbref_Profile = FirebaseDatabase.getInstance().getReference().child("UserProfileData");


    //GPS Enabled ?
    LocationManager locationManager;
    String context = Context.LOCATION_SERVICE;
    locationManager = (LocationManager) getSystemService(context);

    if (!locationManager.isProviderEnabled( LocationManager.GPS_PROVIDER )) {
        // Build the alert dialog
        android.support.v7.app.AlertDialog.Builder builder = new android.support.v7.app.AlertDialog.Builder(this);
        builder.setTitle("Location Services Not Active");
        builder.setMessage("Please enable Location Services and GPS");
        builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialogInterface, int i) {
                // Show location settings when the user acknowledges the alert dialog
                Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                startActivity(intent);
            }
        });

        builder.setNegativeButton("No", new DialogInterface.OnClickListener(){
            public void onClick(DialogInterface dialogInterface, int i) {
                Toast.makeText(getApplicationContext(), "Cannot use app without GPS", Toast.LENGTH_SHORT).show();
            }
        });
        Dialog alertDialog = builder.create();
        alertDialog.setCanceledOnTouchOutside(false);
        alertDialog.show();
    }


    /// =================================== ///

    FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                    .setAction("Action", null).show();
        }
    });

    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.addDrawerListener(toggle);
    toggle.syncState();

    NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);


    ///// Retrieve user email from mainActivity
    Bundle emailData = getIntent().getExtras();

    if (emailData == null) {
        return;
    }

    userMail = emailData.getString("userEMail");

    TextView txtUID = (TextView) findViewById(R.id.textViewUId);
    txtUID.setText(userMail);

    /// End retrieve ///



}

//Network available ?
public boolean isNetworkAvailable() {
    ConnectivityManager connectivityManager
            = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
    return activeNetworkInfo != null && activeNetworkInfo.isConnected();
}

@Override
public void onBackPressed() {
    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    if (drawer.isDrawerOpen(GravityCompat.START)) {
        drawer.closeDrawer(GravityCompat.START);
    } else {
        super.onBackPressed();
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.home_page, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {

        Intent i = new Intent(HomePage.this, UserProfileActivity.class);

        i.putExtra("userEMail", userMail);
        startActivity(i);
        return true;
    }

    return super.onOptionsItemSelected(item);
}

@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
    // Handle navigation view item clicks here.
    int id = item.getItemId();

    if (id == R.id.nav_camera) {
        // Handle the camera action
    } else if (id == R.id.nav_gallery) {

    } else if (id == R.id.nav_slideshow) {

    } else if (id == R.id.nav_manage) {

    } else if (id == R.id.nav_share) {

    } else if (id == R.id.nav_send) {

    }

    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    drawer.closeDrawer(GravityCompat.START);
    return true;
}

@Override
public void onConnected(@Nullable Bundle bundle) {
    mListener = new LocationListener() {
        @Override
        public void onLocationChanged(Location location) {
            lat = location.getLatitude();
            lon = location.getLongitude();

            if(String.valueOf(lat).isEmpty()){
                lat = 0;
            }

            if(String.valueOf(lon).isEmpty()){
                lon = 0;
            }

       //    Toast.makeText(HomePage.this, "Location: " + location.getLatitude() + " - " + location.getLongitude(), Toast.LENGTH_SHORT).show();




        }


    };

    LocationRequest request = LocationRequest.create();
    request.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    request.setInterval(4000);
    request.setFastestInterval(1000);
    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) {
        // TODO: Consider calling
        //    ActivityCompat#requestPermissions
        // here to request the missing permissions, and then overriding
        //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
        //                                          int[] grantResults)
        // to handle the case where the user grants the permission. See the documentation
        // for ActivityCompat#requestPermissions for more details.
        return;
    }
    else {
        LocationServices.FusedLocationApi.requestLocationUpdates(mLocationClient, request, mListener);
    }
}

@Override
public void onConnectionSuspended(int i) {
    return;


}

@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
    return;


}

@Override
protected void onPause() {
    super.onPause();
    LocationServices.FusedLocationApi.removeLocationUpdates(mLocationClient, mListener);

}

@Override
protected void onStart() {
    super.onStart();


    firebaseRead(); // call to fetch fm db

}

//Firebase Read//
public void firebaseRead(){

    dbref_Profile.addListenerForSingleValueEvent(new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {

            for(DataSnapshot ds : dataSnapshot.getChildren()) {

                String emailAdd = ds.child("email").getValue(String.class);
                int userAge = Integer.parseInt(ds.child("age").getValue(String.class));
                String fname = ds.child("firstname").getValue(String.class);
                String lname = ds.child("lastname").getValue(String.class);
                String vehicleType = ds.child("vehicle").getValue(String.class);
                String vehCat = ds.child("vehicleCateg").getValue(String.class);



              /*  Toast.makeText(HistoryActivity.this, emailAdd + " - " + String.valueOf(avgSpeed) + " - " + String.valueOf(totalDist) + " - " +
                                String.valueOf(totalTime) + " - " + currDate, Toast.LENGTH_SHORT).show(); */

                if(emailAdd.equals(userMail)){
                    //String listStr = emailAdd + "|" + currDate + "|" + totalDist + "|" + avgSpeed + "|" + totalTime;
                   // userDataArr.add(listStr);

                    vehicle = vehicleType;
                    vehicleCat = vehCat;


                    // Toast.makeText(HomePage.this, vehicle + " - " + vehicleCat, Toast.LENGTH_SHORT).show();

                }

            }//



        }

        @Override
        public void onCancelled(DatabaseError databaseError) {
            return;

        }
    });

} // End firebaseRead

@Override
protected void onResume() {
    super.onResume();

    /// Location
    mLocationClient = new GoogleApiClient.Builder(this)
            .addApi(LocationServices.API)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .build();
    mLocationClient.connect();
    /////////



        // Start timer
        timer =   new CountDownTimer(6000, 1000) {
            public void onTick(long millisUntilFinished) {
                if(((millisUntilFinished/1000) == 4)){
                    x1 = lat;
                    y1 = lon;

                    t1 = millisUntilFinished/1000;
                }

                if(((millisUntilFinished/1000) == 1)){
                    x2 = lat;
                    y2 = lon;

                    t2 = millisUntilFinished/1000;

                    //timeInterval = t2 - t1;



                    BigDecimal bd1 = new BigDecimal(x1);
                    bd1 = bd1.round(new MathContext(7));
                    x1 = bd1.doubleValue();

                    BigDecimal bd2 = new BigDecimal(x2);
                    bd2 = bd2.round(new MathContext(7));
                    x2 = bd2.doubleValue();

                    BigDecimal bd3 = new BigDecimal(y1);
                    bd3 = bd3.round(new MathContext(7));
                    y1 = bd3.doubleValue();

                    BigDecimal bd4 = new BigDecimal(y2);
                    bd4 = bd4.round(new MathContext(7));
                    y2 = bd4.doubleValue();


                    x_Diff = Math.abs(x2) - Math.abs(x1);
                    x_Diff = Math.abs(x_Diff);

                    y_Diff = Math.abs(y2) - Math.abs(y1);
                    y_Diff = Math.abs(y_Diff);

                    // Toast.makeText(getApplicationContext(), "x_Diff: " + x_Diff  + ";  y-diff: " + y_Diff, Toast.LENGTH_SHORT).show();

                    // User Vehicle info

                    // CAR
                    if(vehicle.equals("Car") && vehicleCat.equals("Small")){
                        carbonDioxideVal = 0.14545;
                    }

                   if(vehicle.equals("Car") && vehicleCat.equals("Medium")){
                        carbonDioxideVal = 0.1738;
                    }

                if(vehicle.equals("Car") && vehicleCat.equals("Average")){
                        carbonDioxideVal = 0.17887;
                    }

                  if(vehicle.equals("Car") && vehicleCat.equals("Large")){
                        carbonDioxideVal = 0.21834;
                    }
                    // END CAR /////////////

                    // Van //
                    if(vehicle.equals("Van") && vehicleCat.equals("Small")){
                      carbonDioxideVal = 0.14545;
                    }

                   if(vehicle.equals("Van") && vehicleCat.equals("Medium")){
                        carbonDioxideVal = 0.1738;
                    }

                   if(vehicle.equals("Van") && vehicleCat.equals("Average")){
                        carbonDioxideVal = 0.17887;
                    }

                    if(vehicle.equals("Van") && vehicleCat.equals("Large")){
                        carbonDioxideVal = 0.21834;
                    }
                    // END Van ////////////////////

                    // Motorbike //
                   if(vehicle.equals("Motorbike") && vehicleCat.equals("Small")){
                        carbonDioxideVal = 0.08474;
                    }

                    if(vehicle.equals("Motorbike") && vehicleCat.equals("Medium")){
                        carbonDioxideVal = 0.10323;
                    }

                    if(vehicle.equals("Motorbike") && vehicleCat.equals("Average")){
                        carbonDioxideVal = 0.11662;
                    }

                     if(vehicle.equals("Motorbike") && vehicleCat.equals("Large")){
                        carbonDioxideVal = 0.13542;
                    }
                    // END Motorbike //////////////////

                    // End User Vehicle info



                    distance = Math.sqrt(Math.pow((x2 - x1),2) + Math.pow((y2 - y1), 2));


                    carbonFootprint = distance * carbonDioxideVal;

                    speed = distance / 3;

                    // Public transport
                    if((speed >= 4.5) && (speed <= 8)){
                        vehicle = "Bus";
                        vehicleCat = "Long vehicle";
                    }

                    if((speed >= 8.5) && (speed <= 12.5)){
                        vehicle = "Metro";
                        vehicleCat = "Long vehicle";
                    }

                    // End Public transport

                    timeInterval = t2 - t1;
                    timeInterval = Math.abs(timeInterval);

                    editTextDistance.setText(String.valueOf(distance));
                    editTextSpeed.setText(String.valueOf(speed));
                    editTextTimeInterval.setText(String.valueOf(timeInterval));




                    if((speed == 0.0 || speed < 0.00005)){

                        //// Current time ////
                        DateFormat df = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss");
                        Date today = Calendar.getInstance().getTime();
                        String reportDate = df.format(today);

                        ///

                        textViewMovemnet.setText("still");

                        avg_Speed = total_DistanceMoved / total_TimeIntervals;

                        UserTrackData userData = new UserTrackData(userMail, reportDate, String.valueOf(total_DistanceMoved), String.valueOf(total_TimeIntervals), String.valueOf(avg_Speed), String.valueOf(carbonFootprint), vehicle, vehicleCat);

                        if(String.valueOf(total_DistanceMoved).equals("0.0") || String.valueOf(total_TimeIntervals).equals("0.0") || String.valueOf(avg_Speed).equals("NaN")){
                            return;
                        }
                            dbref.push().setValue(userData);



                      /*  if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER) || !userMail.isEmpty() || !reportDate.isEmpty()
                                || !String.valueOf(total_DistanceMoved).isEmpty() || !String.valueOf(total_TimeIntervals).isEmpty() ||
                                !String.valueOf(avg_Speed).isEmpty() || !String.valueOf(carbonFootprint).isEmpty() || !vehicle.isEmpty() ||
                                !vehicleCat.isEmpty()){


                            dbref.push().setValue(userData);

                        }
                        else {
                            return;
                        } */


                        //  Toast.makeText(HomePage.this, "final: " + total_DistanceMoved + " ; " + total_TimeIntervals + " ; " + avg_Speed, Toast.LENGTH_SHORT).show();

                        avg_Speed = total_DistanceMoved = total_TimeIntervals = 0;



                    }
                    else {


                        textViewMovemnet.setText("moving");

                        total_DistanceMoved += distance;
                        total_TimeIntervals += timeInterval;
                    }

                }
                finishTime = (millisUntilFinished/1000);
            }

            public void onFinish() {
                //Toast.makeText(getApplicationContext(), "Receive done" + finishTime, Toast.LENGTH_SHORT).show();
                this.start();
            }
        }.start();

        Toast.makeText(getApplicationContext(), "Tracking started", Toast.LENGTH_SHORT).show();



}





public void viewHistory(View view){
    Intent i = new Intent(HomePage.this, HistoryActivity.class);
    i.putExtra("userEMailAddr", userMail);
    startActivity(i);
}

}

Please don't post images of exceptions, copy and paste the exception stacktraces as text. — Mark Rotteveel, Mar 30 '18 at 15:35

score 1 · Accepted Answer · answered Mar 28 '18 at 21:41

1

Line 453, it tells you that one of vehicle or vehicleCat is null.

So the easiest way is the initialize these like this:

String vehicle = "";
String vehicleCat = "";

answered Mar 28 '18 at 21:41

MoGa

635
6
14

bro you are a java god – muzzammil Mar 28 '18 at 21:49
Seriously i have been sitting for hours searching for this bug, Thank you so much man – muzzammil Mar 28 '18 at 21:50
lol thanks, i am glad you solved your problem ;) – MoGa Mar 28 '18 at 21:57

Why is Application crashing with lollipop but working with kitkat

1 Answers1