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

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

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: