android - Getting views in Fragment from a super Activity -


i have activity extends activity b. activity sets fragment has textview. want change aspects of view programmatically via activity b. in activity have:

public void changefragmenttext() {     fragmenta frag = (fragmenta)             getsupportfragmentmanager().findfragmentbyid(r.id.fragment);     if(frag instanceof fragmenta) {         frag.getimagetext().settext("change something");         frag.getimagetext().settextcolor(color.darkgray);         frag.getimagetext().setclickable(false);     } }

where getimagetext() textview fragment. however, has no effect on text. advisable use in changing text in fragment activity?


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