1<?xml version="1.0" encoding="utf-8"?> 2<!-- 3 ~ Copyright (C) 2015 The Android Open Source Project 4 ~ Licensed under the Apache License, Version 2.0 (the "License"); 5 ~ you may not use this file except in compliance with the License. 6 ~ You may obtain a copy of the License at 7 ~ http://www.apache.org/licenses/LICENSE-2.0 8 ~ Unless required by applicable law or agreed to in writing, software 9 ~ distributed under the License is distributed on an "AS IS" BASIS, 10 ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11 ~ See the License for the specific language governing permissions and 12 ~ limitations under the License. 13 --> 14 15<layout xmlns:android="http://schemas.android.com/apk/res/android"> 16 <data> 17 <variable name="a" type="String"/> 18 <variable name="b" type="String"/> 19 </data> 20 <LinearLayout 21 android:orientation="vertical" 22 android:layout_width="match_parent" 23 android:layout_height="match_parent"> 24 <TextView 25 android:id="@+id/textView" 26 android:text="@{a + b}" 27 android:layout_width="wrap_content" 28 android:layout_height="wrap_content"/> 29 </LinearLayout> 30</layout>