与viewModel绑定的Android数据绑定<include>标签不起作用

<layout xmlns:android="http://schemas.android.com/apk/res/android">
    <data>
        <variable
            name="viewModel"
            type="com.example.ViewModel" />
    </data>
    <!-- 布局内容 -->
    <include layout="@layout/included_layout" />
</layout>

<layout xmlns:android="http://schemas.android.com/apk/res/android">
    <data>
        <variable
            name="viewModel"
            type="com.example.ViewModel" />
    </data>
    <!-- 布局内容 -->
</layout>

ActivityMainBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_main);
ViewModel viewModel = new ViewModel();
binding.setViewModel(viewModel);