CODEWITHSUNDEEP
javaandroid
Derek
Derek

Reputation: 3016

Parsing color no longer working with hex values

This is strange, I have used this function before. however it seems to have stopped working and I am not sure why.

I use Color.parseColor to set a background color of an item. This is the code doing it:

imgItemImage.setBackgroundColor(Color.parseColor(cartItem.get("picture")));

I am getting this exception:

java.lang.NumberFormatException: For input string: "#837A67"

at java.lang.Long.parseLong(Long.java:579)

at android.graphics.Color.parseColor(Color.java:1386)

That appears to be a correct hex color so I am unsure why it would be causing this exception.

Does anyone have any idea?

Upvotes: 1

Views: 903

Answers (1)

Nexevis
Nexevis

Reputation: 4667

As you can see from the Exception, the problem is when Long.parseLong() is being called from inside Color.parseColor().

This Exception is due to wrong input being given to Long.parseLong() which is an extra character of #, which should normally be removed by Color.parseColor() before internally calling Long.parseLong().

The Exception thrown by your code can demonstrated below:

String str = "#837A67";
System.out.println(Long.parseLong(str, 16));

Where 16 is the RADIX for hexadecimal.

But try this:

String str = "837A67";
System.out.println(Long.parseLong(str, 16));

And you will get the expected results.

This shows that the String getting passed through parseColor is not correct because the # is not getting removed during Color.parseColor() most likely due to a different character getting removed instead.

Double check into the value you are passing to Color.parseColor() and ensure there are not any characters before the #.

Upvotes: 3

Related Questions