ReplacementSpan's draw() method isn't called

Question

I set background in string like that:

spanString.setSpan(new BackgroundColorSpan(color), 0, 3, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

But I would l

Answer 1

Even if you return the width of the span, the height of the span is 0 when the span covers the whole string. Therefore your span is actually there, with the specified width but the height is 0, therefore not drawn.

You have to set the height of the span updating the values of the parameter Paint.FontMetricsInt fm for function getSize. Check the DynamicDrawable.getSize function as a reference to set the height by updating the FontMetrics values.