看鸿洋博客：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。
