onactivity result example

    public void selectDestination(View view){
        //add if clause to check if we are already in destination
        Intent intent = new Intent(this, destinationActivity.class);
        intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);
        intent.putExtra("car_obj", (Parcelable) car);
        startActivityForResult(intent, 1);
    }

    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == 1) {
            if(resultCode == RESULT_OK){
                if(data.getParcelableExtra("car_obj") != null)
                    car = (Car) data.getParcelableExtra("car_obj");
            }
        }
    }

///Started Activity///
         Intent intent = getIntent();
        if(intent.getParcelableExtra("car_obj") != null) {
            if (car == null) car = (Car) intent.getParcelableExtra("car_obj");
        }
        else{   //load from file if no intent and no result
            CarFileManager cfm = CarFileManager.getInstance();
            cfm.setFile(getBaseContext());

            cfm.loadCar(getBaseContext());
            car = cfm.getCar();
        }
        intent.removeExtra("car_obj");







    @Override
    public void onBackPressed(){
         Intent intent = new Intent(this, destinationActivity.class);
        intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);
        intent.putExtra("car_obj", (Parcelable) car);
        setResult(RESULT_OK, intent);

        super.onBackPressed();
    }