Programmatically Changing Drawable Gradient

progamGradient.kt

// Change card gradient based on POS
        var background = ResourcesCompat.getDrawable(main.resources, R.drawable.card_gradient, null) as GradientDrawable
        var colorList = IntArray(10) {getWhiteColor()} // Create an integer array of all white values
        background.mutate() // Mutate the drawable so changes don't affect every other drawable
        // background.setGradientCenter(0.1F, 0.5F) // Reset the center of the gradient (default is 0.5F, 0.5F)) - Only works for radial and sweep types

        // Conditionaly change the last color in the integer array
        when (word?.partOfSpeech) {
            "noun" -> colorList[colorList.size-1] = Color.argb(255, 66, 133, 244) // Blue
            "verb" -> colorList[colorList.size-1] = Color.argb(255, 15, 157, 88) // Green
            "adjective" -> colorList[colorList.size-1] = Color.argb(255, 219, 68, 55) // Red
            else -> colorList[colorList.size-1] = Color.argb(255, 244, 180, 0) // Yellow
        }

        background.setColors(colorList) // Change the drawable's gradient to your new color list
        holder.wordCard.background = background // Update the card background to the gradient drawable