/**
* Input: Hex Value of ARGB, eg: "#FFFF00FF", "#FF00FF", "#F0F"
* Output: Float Color Array with with red, green,
* blue and alpha (opacity) values,
* eg: floatArrayOf(0.63671875f, 0.76953125f, 0.22265625f, 1.0f)
*/
private fun getFloatArrayFromARGB(argb: String): FloatArray {
val colorBase: Int = if (argb.length == 4) {
val red = if (argb[1] == '0') 0 else 255
val green = if (argb[2] == '0') 0 else 255
val blue = if (argb[3] == '0') 0 else 255
Color.rgb(red, green, blue)
} else {
Color.parseColor(argb)
}
val red = Color.red(colorBase)
val green = Color.green(colorBase)
val blue = Color.blue(colorBase)
val alpha = Color.alpha(colorBase)
return floatArrayOf(
red / 255f,
green / 255f,
blue / 255f,
alpha / 255f
)
}
使用:
private val colorValue = getFloatArrayFromARGB("#F0F")