Android Build a Simple Android App with Java Improving Our Code Dynamically Changing the Background Color

Change background color

Don't know what's wrong with my code
import android.os.Bundle;
import android.widget.TextView;

public class MealActivity extends Activity {

    public void onCreate(Bundle savedInstanceState) {

        TextView foodLabel = (TextView) findViewById(;
        TextView drinkLabel = (TextView) findViewById(;
        RelativeLayout mealLayout = (RelativeLayout) findViewById(;

1 Answer

Tonnie Fanadez
Tonnie Fanadez
UX Design Techdegree Graduate 22,771 Points

Nkosinolwazi Moyo

Thanks for showing interest in Java and Android, I'm sure you will like both.

You have done well to call the method setBackgroundColor() but a point of correction ont the spelling of this method setBack g roundColor() - g is supposed to be in small caps.

The name of the layout as provided in the question is mealLayout. You should use this name instead of relativeLayout to avoid errors.

Kindly see my code line for this challenge:


happy coding Sir.