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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

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
56,406 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.