how to set large data using getquery and jsonserializer?

[HeroLi]

Dear all

        I'd like to build a demo following the large data set sample in 
Apache Pivot official web site .

        The sample is using CSVSerializer and calling a thead class [
AddRowsCallback] in method endList() and readitem().

Question:
        1.Can any one demonstrate the 2 method of  endList() and 
readItem()?
        2.if using JSONSerializer and accept  ArrayList parameter.do i 
still have to overwrite endList() and readItem()?I tried
      but it seams wrong.

I just want to set ArrayList  into tableview.As when the list'length is 
over about 500 hundreds,UI becomes
frozen a few minutes.

I really appreciate it if anyone can give me some help.

Thanks and regards

Hero