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Android Build an Interactive Story App User Input Finding Views by IDs

Derek Lam
Derek Lam
1,012 Points
Posted by Derek Lam
Derek Lam
1,012 Points

exterminateButton

Can anyone help me with this challenge?

MainActivity.java 
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    protected Button exterminateButton;

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


        // Declare our view variables

         exterminateButton = findViewById(R.id.button1);
    }

}

2 Answers

Jennifer Nordell
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there, Derek Lam! The findViewById part is fine. However, that returns a view and not a Button. The last line in the instructions says to not forget to "cast" the view into a Buttton.

Right now you have:

exterminateButton = findViewById(R.id.button1);

But you would need:

exterminateButton = (Button)findViewById(R.id.button1);  // cast the view into a button

Hope this helps! :sparkles: