android - Pass data to previous fragment -

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i have 2 fragments , b. going fragment fragment b using following method. 

getactivity().getsupportfragmentmanager().begintransaction().replace(r.id.content_frame, new b()).addtobackstack(tag).commit();

now want send data fragment b fragment i.e previous fragment. can please give me idea how send data previous fragment.

thanks

check documentation fragments , communication.

do want pass info 1 fragment another? 1 fragment shouldn't know other fragments. make fragment b communicate activity through interface , make activity pass data fragment a


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