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JAVA

calling activity method from fragment:

((YourActivityClassName)getActivity()).yourPublicMethod();
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call fragment method from activity

YourFragmentClass fragment = (YourFragmentClass)fm.findFragmentByTag("yourTag");
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fragment call activity

Intent myIntent = new Intent((ParentActivity)getActivity(), YourOtherActivity.class);
(ParentActivity)getActivity().startActivity(myIntent);
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