我的解决方案是在片段中写一个静态方法:

public TheFragment setData(TheData data) {
    TheFragment tf = new TheFragment();
    tf.data = data;
    return tf;
}

通过这种方式，我可以确保在任何其他可能需要使用它的操作之前，我需要的所有数据都在Fragment中。 而且在我看来它看起来更干净。

在片段和活动之间传递数据的最聪明的方法是创建一个变量，例如:

class StorageUtil {
  public static ArrayList<Employee> employees;
}

然后通过onActivityCreated方法将数据从fragment传递给activity:

//a field created in the sending fragment
ArrayList<Employee> employees;

@Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
         employees=new ArrayList();

       //java 7 and above syntax for arraylist else use employees=new ArrayList<Employee>() for java 6 and below

     //Adding first employee
        Employee employee=new Employee("1","Andrew","Sam","1984-04-10","Male","Ghanaian");
        employees.add(employee);

      //Adding second employee
       Employee employee=new Employee("1","Akuah","Morrison","1984-02-04","Female","Ghanaian");
         employees.add(employee);

        StorageUtil.employees=employees;
    }

现在您可以获得StorageUtil的值。来自各地的员工。 古德勒克!

从Activity中，你用Bundle发送数据为:

Bundle bundle = new Bundle();
bundle.putString("data", "Data you want to send");

// Your fragment
MyFragment obj = new MyFragment();
obj.setArguments(bundle);

并在Fragment的onCreateView方法中获取数据:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) 
{
    String data = getArguments().getString("data");// data which sent from activity  
    return inflater.inflate(R.layout.myfragment, container, false);
}

将数据从活动类发送到片段的更好方法是通过setter方法传递。就像

FragmentClass fragmentClass = new FragmentClass();
fragmentClass.setMyList(mylist);
fragmentClass.setMyString(myString);
fragmentClass.setMyMap(myMap);

并且很容易从类中获得这些数据。

从Activity中发送数据，意图如下:

Bundle bundle = new Bundle();
bundle.putString("edttext", "From Activity");
// set Fragmentclass Arguments
Fragmentclass fragobj = new Fragmentclass();
fragobj.setArguments(bundle);

在Fragment的onCreateView方法中:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    String strtext = getArguments().getString("edttext");    
    return inflater.inflate(R.layout.fragment, container, false);
}

你可以在片段中创建一个setter方法。然后在Activity中，当引用片段时，调用setter方法并将Activity中的数据传递给它