I have a 10×10 Hex Game board which consists of hexagonal buttons. I am trying to change the color of the hexagons when user clicks on them. I tried lots of things but my buttons are always purple.

I tried to use the blue,black,red hexagons but weirdly every single one is purple when I use them as button backgrounds.

XML for one button(I have 100 of these):

    <Button
        android:id="@+id/button00"
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:background="@drawable/hexagon"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.300" />

I tried the following functions

buttons[finalI][finalJ].setBackgroundColor(Color.parseColor("#666bff")); //hexagons becomes squares, but still purple.

buttons[finalI][finalJ].setBackgroundResource(R.drawable.hexagonblue); //still purple

How can I change the colors of buttons and why all the buttons are purple even though I upload different colors of png hexagons?

Source: Android Studio Questions