Android數據綁定錯誤？

Question

我試圖用me.tatarka.bindingcollectionadapter：bindingcollectionadapter庫後，我加入它搖籃：

compile 'me.tatarka.bindingcollectionadapter:bindingcollectionadapter:1.3.0' 
compile 'me.tatarka.bindingcollectionadapter:bindingcollectionadapter-recyclerview:1.3.0' 

我用它在XML文件中像這樣：

<layout> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    android:id="@+id/activity_main" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    > 
    <data> 
     <variable name="viewModel" type="com.example.ViewModel"/> 
     <import type="me.tatarka.bindingcollectionadapter.LayoutManagers" /> 
    </data> 

    <android.support.v7.widget.RecyclerView 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:layout_toStartOf="@+id/recycler" 
     app:layoutManager="@{LayoutManagers.linear()}" 

     app:items="@{viewModel.items}" 
     app:itemView="@{viewModel.itemView}"/> 
</RelativeLayout> 
</layout> 



    Identifiers must have user defined types from the XML file. LayoutManagers is missing it file 
    ****\ data binding error **** 

可能有人幫我？ 謝謝。

Answer 1

數據必須是佈局的孩子

<layout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools"> 
    <data> 
     <variable name="viewModel" type="com.example.ViewModel"/> 
     <import type="me.tatarka.bindingcollectionadapter.LayoutManagers" /> 
    </data> 

    <!-- Rest of your layout --> 
</layout>