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Sattayawiwat Supphakhoon2,265 Points
Make sure you are using the correct system value for white!
Why it still wrong answer?
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent"> <Button android:id="@+id/thrustButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/thrust_label" android:background="#ffaa0000" android:textColor="#ffffff " app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" /> </android.support.constraint.ConstraintLayout>
Ben DeitchTreehouse Teacher
You need to use 8 of the letter 'f', and also you can't have any spaces at the end.
Hope that helps!