看博客：http://blog.csdn.net/lmj623565791/article/details/42628537，整理下一些关键点

public class ContentFragment extends Fragment{    private String mArgument;    public static final String ARGUMENT = "argument";    @Override    public void onCreate(Bundle savedInstanceState)    {        super.onCreate(savedInstanceState);        // mArgument = getActivity().getIntent().getStringExtra(ARGUMENT);        Bundle bundle = getArguments();        if (bundle != null)            mArgument = bundle.getString(ARGUMENT);    }    /**     * 传入需要的参数，设置给arguments     * @param argument     * @return     */    public static ContentFragment newInstance(String argument)    {        Bundle bundle = new Bundle();        bundle.putString(ARGUMENT, argument);        ContentFragment contentFragment = new ContentFragment();        contentFragment.setArguments(bundle);        return contentFragment;    }

通过在activity里面调用newInstance来将activity的内容传递给fragment,实现activity和fragment之间的解耦。

项目中也可以通过eventbus来实现activity和fragment直接的消息互通。