这是我所看到的一个完全的例外，对于标题来说太大了
java.lang.illegalstateexception:在android的父或祖先上下文中找不到方法storeemail（view）：在id为“confirmfrag”的视图类com.google.android.material.button.materialbutton上定义的onclick属性
我正试图将一些数据从片段发送回它的父活动。我对安卓开发非常陌生，在意图、片段和数据传递的一般方式上都有很多困难。我原以为下面的代码最终是罚单，但似乎不是。
这是片段代码

public class EmailFragment extends Fragment {
EmailCreated activity;
public interface EmailCreated {
    String onEmailCreated(Bundle emailBundle);
}
public EditText subjectLineFrag, emailFrag;
public String emails, subject;
public Button confirmFrag;
public Bundle emailBundle;
@Nullable
@org.jetbrains.annotations.Nullable
@Override
public View onCreateView(@NonNull @NotNull LayoutInflater inflater, @Nullable @org.jetbrains.annotations.Nullable ViewGroup container, @Nullable @org.jetbrains.annotations.Nullable Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.email_fragment, container, false);
    emailFrag = view.findViewById(R.id.emailFrag);
    subjectLineFrag = view.findViewById(R.id.subjectLineFrag);
    confirmFrag = view.findViewById(R.id.confirmFrag);
    return view;
}
public Bundle storeEmail(View v, EditText subjectLineFrag, EditText emailFrag) {
    String emails = emailFrag.getText().toString();
    String subject = subjectLineFrag.getText().toString();
    emailBundle.putString("message", emails);
    emailBundle.putString("subject", subject);
    return emailBundle;
}
@Override
public void onAttach(@NonNull @NotNull Context context) {
    //context will refer to the attached activity
    super.onAttach(context);
    activity = (EmailCreated) context;
}
@Override
public void onCreate(@Nullable @org.jetbrains.annotations.Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
}
//Implement Fragment Lifecycle
@Override
public void onStart() {
    super.onStart();
}
@Override
public void onResume() {
    super.onResume();
}
@Override
public void onPause() {
    super.onPause();
}
@Override
public void onStop() {
    super.onStop();
}
@Override
public void onDestroyView() {
    super.onDestroyView();
}
@Override
public void onDestroy() {
    super.onDestroy();
}
@Override
public void onAttach(@NonNull @NotNull Activity activity) {
    super.onAttach(activity);
}
@Override
public void onDetach() {
    super.onDetach();
}

}
最初我将变量声明为private，但我在这里读到，将它们公开可能会起作用，但不会起作用
下面是它所附加到的活动的代码，非常简单，首先尝试执行片段

public class GuestActivity2 extends AppCompatActivity implements EmailFragment.EmailCreated {
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_guest2);
    FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
    transaction.replace(R.id.container, new EmailFragment());
    transaction.commit();
}
@Override
public String onEmailCreated(Bundle emailBundle) {
    return null;
}

}
我不知道为什么这不起作用。我试图在活动中创建方法，因为我认为这是消息告诉我要做的，但没有被识别。更改变量不起作用。我还没有试着用这个包裹做任何事情，所以也许就这样？我有点迷路了