Android數據綁定錯誤？

Question

我將它添加到gradle后嘗試使用me.tatarka.bindingcollectionadapter：bindingcollectionadapter庫：

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

我在xml文件中使用它，如下所示：

<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 ****

有人能幫助我嗎？ 謝謝。

Answer 1

數據必須是布局的子項

<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>