custom style - retrieve color attr in code - working well as long the color is not #ffffffff

Question

I have defined a color attr, set it in a style and I am using the below code to use the value. Everything is working fine as long the color is different from #ffffffff (means according to the code below, for any color defined in the style the color variable is getting the correct value, but for white the value in color is -1). It seems that with my code the color value must be smaller than #ffffffff and I don't understand why.

this is the attr definition:
<attr name="viewLvActive" format="color"/>

this is the line in the custom style:
<item name="@attr/viewLvActive">#ffffffff</item>

This is the code, which I use to get this color value from my theme:

Resources.Theme theme = mCtx.getTheme();
TypedValue styleID = new TypedValue();
if (theme.resolveAttribute(R.attr.viewLvActive, styleID, true))
    color=styleID.data;
else
    color=-1;

Finally I can live with a color of #fffffffe but still I would like to know where is the mistake.

see this [get value of an attribute in code](http://stackoverflow.com/questions/7896615/android-how-to-get-value-of-an-attribute-in-code) — ρяσѕρєя K, Mar 20 '12 at 15:22
That's clear so far and actually my code is according to this answer — KarlKarlsom, Mar 21 '12 at 09:46

score 0 · Answer 1 · answered Aug 12 '14 at 22:55

What is the type of the color variable? Because if it's int, then -1 == #ffffffff. If you're checking something like:

if (color == -1) {

you'll get true for #ffffffff. An int is 32 bits and an ARGB color will fill all of it up. You can't use a value like -1 (or any other value) to mean "no color".

custom style - retrieve color attr in code - working well as long the color is not #ffffffff

1 Answers1