我想将Fragment类中的变量用于Home类

public class MyFragment extends Fragment {
    private int myVariable;

    public int getMyVariable() {
        return myVariable;
    }
}

MyFragment myFragment = new MyFragment();
int variable = myFragment.getMyVariable();

public interface MyInterface {
    void onVariablePassed(int variable);
}

public class MyFragment extends Fragment {
    private int myVariable;
    private MyInterface myInterface;

    public void setMyInterface(MyInterface myInterface) {
        this.myInterface = myInterface;
    }

    public void passVariable() {
        myInterface.onVariablePassed(myVariable);
    }
}

public class HomeActivity extends AppCompatActivity implements MyInterface {
    @Override
    public void onVariablePassed(int variable) {
        // 在这里获取变量的值
    }
}

MyFragment myFragment = new MyFragment();
myFragment.setMyInterface(this);
myFragment.passVariable();

public class MyFragment extends Fragment {
    private int myVariable;

    public Bundle getVariableBundle() {
        Bundle bundle = new Bundle();
        bundle.putInt("myVariable", myVariable);
        return bundle;
    }
}

MyFragment myFragment = new MyFragment();
Bundle bundle = myFragment.getVariableBundle();
int variable = bundle.getInt("myVariable");