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

welsen ho
welsen ho
1,330 Points
Posted by 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
56,414 Points
Seth Kroger
Seth Kroger
56,414 Points

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

Imran Hossain
Imran Hossain
5,353 Points
Imran Hossain
Imran Hossain
5,353 Points

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.