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

Posted by Terence Evans
Terence Evans
1,870 Points

Build an Interactive Story

In the 1st Challenge Task 1 of 1, I have:

import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Button;

public class MainActivity extends Activity {

protected Button mExterminateButton;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    ExterminateButton = (Button)findViewById(R.id.exterminateButton);

    // Declare our view variables

}

}

And when I put it through the compiler I get the message:

./MainActivity.java:14: error: cannot find symbol mExterminateButton = (Button)findViewById(R.id.exterminateButton); ^ symbol: variable exterminateButton location: class id 1 error

Any help would be appreciated.

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

public class MainActivity extends Activity {

    protected Button ExterminateButton;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ExterminateButton = (Button)findViewById(R.id.exterminateButton);

        // Declare our view variables

    }

}

1 Answer

Seth Kroger
Seth Kroger
56,413 Points
Seth Kroger
Seth Kroger
56,413 Points

The challenge states the button's id is 'button1' and not 'exterminateButton'. (Also, style-wise, you should have the first letter of a variable name be lowercase if it's not all caps.)

Terence Evans
Terence Evans
1,870 Points

Thanks for the quick response Seth. I went on Google and did a search and found what I was after. Sorry to bother you.