<?xml version="1.0" encoding="utf-8"?> <layout xmlns:android="http://schemas.android.com/apk/res/android"> <data> <variable name="fruitAnalyzeViewModel" type="jackall.moncalc.viewmodel.FruitAnalyzeViewModel" /> </data> <android.support.constraint.ConstraintLayout android:layout_width="match_parent" android:layout_height="match_parent"> <com.github.mikephil.charting.charts.PieChart android:id="@+id/fruit_pie_chart" android:layout_width="match_parent" android:layout_height="match_parent" android:fruitPieChart="@{fruitAnalyzeViewModel.pieData}" /> </android.support.constraint.ConstraintLayout> </layout>