Cannot solve code challenge

Question

having trouble solving this challenge

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);
      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!
    }
}

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;
    }
}

Answer 1 · 2016-12-25T13:29:08Z

December 25, 2016 1:29pm

Step 1. They wanted you to "Use the custom constructor that takes a String parameter, and pass in "FIREFLY" as the parameter." If you have not used java before, I recommend you read up on constructors or run through the java basics as everything you do in android is java.

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);
      mSpaceship = new Spaceship("FIREFLY"); //Added the code here <---------------------------

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

        // Add your code here!
    }
}

Step 2. Update the TextView using the getter method

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);
      mSpaceship = new Spaceship("FIREFLY");

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

        // Add your code here!
mTypeLabel.setText(mSpaceship.getType());//Added code here <----------------------
    }
}

Step 3. Finally, use the setText method found within Spaceship

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);
      mSpaceship = new Spaceship("FIREFLY");

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

        // Add your code here!
mTypeLabel.setText(mSpaceship.getType());
mPassengersField.setText(mSpaceship.getNumPassengers() + ""); //Added code here <----------------------
    }
}

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Harshvardhan Mairh

Harshvardhan Mairh

Cannot solve code challenge

1 Answer

Philip Gales

Philip Gales

Harshvardhan Mairh

Harshvardhan Mairh