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Android Build a Simple Android App with Kotlin Creating the Screen Layout Setting Colors

Posted by Samuel Boyer
Samuel Boyer
622 Points

that's two to many values for the hex code value: fff092b0

fff092b0

too many values for the hex code

activity_main.xml 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="@android:color/#fff092b0" >

  <TextView
    android:id="@+id/textView1"
    android:textColor="@android:color/white"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_centerVertical="true"
    android:text="Treehouse loves me!"
    android:textSize="72sp" />

</RelativeLayout>

1 Answer

Peter Vann
Peter Vann
36,425 Points
Peter Vann
Peter Vann
36,425 Points

Hi Samuel!

I watched the video preceding the challenge:

https://teamtreehouse.com/library/setting-colors-2

At around 4:30 he explains the hex value.

In this case #f092b0 would be the correct CSS color value (a sort of off-dark-pink*), but the first two "f"s represent an additional alpha value (opacity), which, in this case, is ff (255) or 100% opaque.

*(See it here: https://color-hex.org/color/f092b0)

I was previously unaware of this type of hex value usage since I haven't taken this Android course yet!?!

So, I learned something, too - thanks!

:)

I hope that helps.

Stay safe and happy coding!