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Android Build an Interactive Story App (Retired) Finishing the User Interface Using a Model in the Controller

Lee Morgan
Lee Morgan
2,419 Points
Posted by Lee Morgan
Lee Morgan
2,419 Points

Trouble with a custom constructor

I am basically just completely lost here as to what this code challenge wants me to do. I have put in as much as I can, but even that is probably wrong. The videos fly through everything and don't take time to explain anything that they are doing. What am I supposed to do here?

LandingActivity.java 
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class LandingActivity extends Activity {

    public Button mThrustButton;
    public TextView mTypeLabel;
    public EditText mPassengersField;

    public Spaceship mSpaceship;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_landing);

        mThrustButton = (Button)findViewById(R.id.thrustButton);
        mTypeLabel = (TextView)findViewById(R.id.typeTextView);
        mPassengersField = (EditText)findViewById(R.id.passengersEditText);

        Spaceship mSpaceship = new Spaceship();
        mSpaceship = 
    }
}
Spaceship.java 
public class Spaceship {
    private String mType;
    private int mNumPassengers = 0;

    public String getType() {
      return mType;
    }

    public void setType(String type) {
      mType = type;
    }

    public int getNumPassengers() {
      return mNumPassengers;
    }

    public void setNumPassengers(int numPassengers) {
      mNumPassengers = numPassengers;
    }

    public Spaceship() {
      mType = "SHUTTLE";
    }

    public Spaceship(String type) {
      mType = type;
    }
}

1 Answer

Steve Hunter
Steve Hunter
57,712 Points

Hi Lee,

The Spaceship class has two possible constructors. One defines a Spaceship of type "SHUTTLE", the other takes a String to define its own type - that's the one you want to use here.

So, adding:

mSpaceship = new Spaceship("FIREFLY");

in the onCreate method will use the second custom constructor that takes a string.

I hope that makes sense!

Steve.