What would be the right way to turn a color Drawable into a grayscale one (to indicate disabled state)?
EDIT:
B/W => grayscale
4 Answers
I know this question was asked a while ago, but I came across a simpler solution that works if you have a Drawable and you just want to display that same drawable in grayscale. No need to have a canvas or a painter...
protected Drawable convertToGrayscale(Drawable drawable)
{
ColorMatrix matrix = new ColorMatrix();
matrix.setSaturation(0);
ColorMatrixColorFilter filter = new ColorMatrixColorFilter(matrix);
drawable.setColorFilter(filter);
return drawable;
}
Hope this helps too!
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