Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

welsen ho
welsen ho
1,330 Points

What code should i type in

where is my mistake?

MealActivity.java
import android.os.Bundle;
import android.widget.TextView;

public class MealActivity extends Activity {
    mealLayout.setBackgroundColor(Color.GREEN);

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

        TextView foodLabel = (TextView) findViewById(R.id.foodTextView);
        TextView drinkLabel = (TextView) findViewById(R.id.drinkTextView);

        RelativeLayout mealLayout = (RelativeLayout) findViewById(R.id.mealLayout);

    }
}

2 Answers

Seth Kroger
Seth Kroger
56,413 Points

Your code needs to be inside the method, directly after the declaration of mealLayout.

You cannot call a method outside another method or unless youre storing a value by calling a method in a variable or in an object. Also , call methods related to a certain class after initialization of am object of that class.