Android MVP - How to communicate between activity presenter and fragment presenter -

i have activity 3 fragments, use viewpager. want implement mvp , communicate between activity presenter , fragment presenters i.e:

• passing data activity presenter fragment presenters
• sending event fragment presenters activity presenter
• ...

but don't know how in official way. can use busevent don't think it's practice.

as per understanding, usecase, suppose activitya have viewpager having 3 fragments(fragmenta, fragmentb, fragmentc).

activitya have activitypresentera

fragmenta have fragmentpresentera

as per mvp, fragmentpresentera should responsible logical , business flows of fragmenta , should communicate fragmenta only. therefore, fragmentpresentera can not directly communicate activitypresentera.

for communication fragment activity, presenter should not involved , should done communicate in non-mvp architecture, i.e. of interface.

same applies activity fragment communication.

for communication between activity , fragment read here