css style hex strings and Color.decode

Question

this article suggests you can use Color c = Color.decode("FF0096"); however this understandably throws an exception

Caused by: java.lang.NumberFormatException: For input string: "FF0096"
    at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
    at java.lang.Integer.parseInt(Integer.java:449)
    at java.lang.Integer.valueOf(Integer.java:528)
    at java.lang.Integer.decode(Integer.java:958)
    at java.awt.Color.decode(Color.java:707)

What is the best way of converting a String in the format of "#FF0096" or "FF0096" into a java awt Color?

Matthew Flaschen · Accepted Answer · 2010-02-26 07:09:02Z

50

Color c = Color.decode("0xFF0096");

or

Color c = Color.decode("#FF0096");

or

Color c = new Color(0xFF0096);

answered Feb 26, 2010 at 7:09

Matthew Flaschen

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1 Comment

Bad Loser Over a year ago

6 hex digits max! I could not specify alpha.

codaddict · Accepted Answer · 2010-02-26 09:10:25Z

9

The Color.decode method throws the NumberFormatException if the specified string cannot be interpreted as a decimal, octal, or hexidecimal integer

The string "FF0096" without the prefix of 0 or 0x will be interpreted as a base 10 representation which does not work.

edited Feb 26, 2010 at 9:10

answered Feb 26, 2010 at 7:16

codaddict

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3 Comments

pstanton Over a year ago

you are wrong to say that FF0096 prefixed with 0x does not work.

codaddict Over a year ago

@pstanton: Thanks for pointing out..it was a typo. I've corrected it.

bestsss Over a year ago

0 prefix means octal and it's very unlikely anyone would like that for decoding colors

Ehtesh Choudhury · Accepted Answer · 2015-06-23 18:07:44Z

2

I was looking for a similar way to do this in Android. For some reason, I couldn't find Color.decode() so I looked for an alternative. If you want to use a hex string to represent a color in Android, you can do the following:

String hexColor = "#142b44";
View row = findViewById(R.id.row);
int color = Color.parseColor(hexColor);
row0.setBackgroundColor(color);

More at Color#parseColor

answered Jun 23, 2015 at 18:07

Ehtesh Choudhury

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1 Comment

Jasper Over a year ago

This question is about java.awt.Color, while you're using android.graphics.Color.

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