将ArrayList从Fragment类传递给Activity

在您的Fragment中创建一个自定义界面：

public interface onFragmentInteractionListener {        public void onFragmentSetStudents(ArrayList<Student>);         }

在您的活动中实现此接口：

public class YourActivity extends Activity implements YourFragment.onFragmentInteractionListener {   private ArrayList<Student> allStudents;}

现在，您必须重写声明的方法（在中

Activity

@Overridepublic void onFragmentSetStudents(ArrayList<Student> students) {  allStudents = students;}

然后，您只需要使用Fragment中的Listener来启动此方法：

onFragmetInteractionListener listener = (OnFragmentInteractionListener) activity;listener.onFragmentStudents(allStudents)