how to check String is valid hex color code in android

Question

I had a String which I need to validate whether it is valid hex color code or not . My sample strings are as follows :

1 - #ff00000

2 -#ff347820

How to validate the above strings to check whether they are valid hex color codes or not .
Can anyone help me in sorting out this issue ?

Thanks in advance

Answer 1

The proper Android way of testing this, independently of supporting future formats, is to rely on the Color class.

Like this:

try {
    Color color = Color.parseColor(myColorString);
    // color is a valid color
} catch (IllegalArgumentException iae) {
    // This color string is not valid
}

As a bonus, it also supports named colors such as magenta, blue...

The main pro over regex matching is semantic. This code explicitly tests the myColorString String against being a Color. You practically don't need any comment at all to tell what is does.