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

Int cannot be dereferenced

I am trying to convert the above code to string but all methods are producing an error

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);
        mSpaceship=new Spaceship("FIREFLY");
        mTypeLabel.setText(mSpaceship.getType());
        mPassengersField.setText((mSpaceship.getNumPassengers()).toString());
        // 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;
    }
}
Evan Anger
Evan Anger
Treehouse Guest Teacher

Doing a quick pass through on the code, can you call out what line of code is giving you the "Int cannot be deferenced" compile error? This will aid others in helping with a solution.

1 Answer

Hello,

ints are a primative type and do not have a toString method. The common way on Treehouse videos to convert an int to a string is to concatinate it with an empty string

String someString = 12345 + "";

Another way is to use the toString static method on the Integer class

String someString = Integer.toString(12345);