You can apply two different spans to same portions.
SpannableStringBuilder builder = new SpannableStringBuilder("Hello there");
builder.setSpan(new TypefaceSpan("arial"), 1, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
builder.setSpan(new RelativeSizeSpan(1.5f), 1, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
EDIT: You say you're looking for a way to create aggregated Spans that combine these spans together -- so that the actual styling (e.g. TypefaceSpan or RelativeSizeSpan) can be encapsulated within logical spans (e.g. FooterSpan)
Since both TypeFaceSpan and RelativeSizeSpan are children of MetricEffectingSpan, following could be a solution:
class FooterSpan extends MetricAffectingSpan {
MetricAffectingSpan[] spans;
public FooterSpan(MetricAffectingSpan... spans) {
this.spans = spans;
}
@Override
public void updateMeasureState(TextPaint p) {
for(MetricAffectingSpan span : spans) {
span.updateMeasureState(p);
}
}
@Override
public void updateDrawState(TextPaint tp) {
for(MetricAffectingSpan span : spans) {
span.updateDrawState(tp);
}
}
}
example usage:
builder.setSpan(new FooterSpan(new TypefaceSpan("arial"), new RelativeSizeSpan(1.5f)), 1, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
You can even write your FooterSpan in a more specialized way so that you can use it like this:
builder.setSpan(new FooterSpan("arial", 1.5f), 1, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
I think it is trivial to adopt the FooterSpan to the second case.