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


I dont know how to answer this question using constructors Using the question.... """The LandingActivity interacts with the Spaceship model object we created. Start by setting mSpaceship to a new Spaceship object in the onCreate() method. Use the custom constructor that takes a String parameter, and pass in "FIREFLY" as the parameter.""""

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;

    public void onCreate(Bundle savedInstanceState) {

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

        // Add your code here!
        public LandingActivity(String x){
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

    // other code omitted...

    public Spaceship mSpaceship;

        // other code omitted...

        Spaceship mSpaceship=new Spaceship();       // the problem is on this line.
        // they already declared an mSpaceship above this line (public Spaceship ... ), why are you declaring it again?

As a side note, if you aren't comfortable with constructors, I recommend watching the Java videos because Android programming requires an advanced understanding of constructors and other Java topics.