@Override public void onClick(View view) { if (activity instanceof MainActivity) { ((MainActivity) activity).getCurrentListFragment().showProfile(user); return; } if (activity instanceof InReplyToActivity) { ((InReplyToActivity) activity).getInReplyToFragment().showProfile(user); return; } if (activity instanceof PictureActivity) { ((PictureActivity) activity).getPictureFragment().showProfile(user); return; } if (activity instanceof SearchActivity) { ((SearchActivity) activity).getSearchFragment().showProfile(user); return; } }