java.lang.RuntimeException：Parcelable遇到IOException，编写可序列化对象

Question

我不知道它为什么会出错。昨天，也是上周，它取得了成功。现在它给出了错误。为什么呢？

专业课程

public class Patient implements Serializable{


    private int pID;
       int uID;
       String pName;
       String pass;
       Date birthDate;
       String adress;
       String city;
       String email;
       int tel;
       int telefonid;
      public boolean Login() {    ....  }

登录类

Patient patientlogin = new Patient(name.getText().toString(), pass.getText().toString());
        if(patientlogin.Login())
        {
            Bundle bundle = new Bundle();
            bundle.putSerializable("User",patientlogin);
            veriaktarma.putExtras(bundle);
            startActivity(veriaktarma);
        }

菜单类

        Intent intent = getIntent();
    Bundle bundle = intent.getExtras();

    _p= (Patient) bundle.getSerializable("User");
    Toast.makeText(menu.this,_p.pName, 5000).show();