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Android Build a Simple Android App (2014) Improving Our Code Dynamically Changing the Background Color

Brandon Wash
PLUS
Brandon Wash
Courses Plus Student 1,186 Points
Posted by Brandon Wash
Brandon Wash
Courses Plus Student 1,186 Points

The code below has a RelativeLayout variable named mealLayout. Change the background color of this layout to green. Use

I dont know where I messed up on this code. Any advice will be helpf guys. Thanks

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

public class MealActivity extends Activity {

    @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);
        relativeLayout.setBackgroundColor(Color.Green);
    }
}

1 Answer

Ken Alger
STAFF
Ken Alger
Treehouse Teacher
Ken Alger
Ken Alger
Treehouse Teacher

Brandon;

Welcome to Treehouse!

A couple of issues I see. Let's take a look at the challenge.

Task 1

The code below has a RelativeLayout variable named mealLayout. Change the background color of this layout to green. Use the constant Color.GREEN as the parameter for the method you'll use.

First, in your code you want to be changing mealLayout, not relativeLayout as you have it. In the video and many of the projects, Ben Jakuben does name the variables the same as the type of variable, i.e. RelativeLayout relativeLayout, but this challenge is different and doesn't necessarily mater. You could call it RelativeLayout brandonWash it just isn't necessarily a meaningful name.

Secondly, the color name should be in all caps, so your code should look like:

mealLayout.setBackgroundColor(Color.GREEN);

Hope it helps and post back if you have other questions or are still stuck.

Ken