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Question asked by haipinghuang on Nov 11, 2014

hi all;

l am using asmack to develop a android client  based on openfire,

now l have faced a issue that when l want to add an user to my roster, before doing this,

l need to judge if the user existed on server,but how can l know  has the  user Registered or nort on


does anyone can give me an help to solve this issue,thanks very much!