android - Refresh gridview in ViewPager fragment after adding photo in MainActivity -


i refresh gridview in 1 of view pager fragment once have added image through function in main acitivty.

i not know how access gridview , adapter in fragment main activity , , hence cannot use adapter.notifydatasetchanged() , gridview.invalidateviews() .

main activity (fragment activity) - fragment (viewpager) - fragment a, fragment b, fragment c

add image function in main acitivty, gridview in fragment a.

please help.


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