XML : Creating Xml vs Creating Views Dynamically

My layout will have nested weights and will be in complex view-pager structure. Thus i want to do everything dynamically instead of creating them in xml file.

So what i wonder is, does creating dynamically improve performance a lot? Especially in the conditions above? I will be still using nested weights but this time the phone will not have to deal with xml parsing. Or Should i just ignore and do everything in xml?

Thanks in advance.