1<?xml version="1.0" encoding="utf-8"?> 2<!-- 3 ~ Copyright (C) 2019 The Android Open Source Project 4 ~ 5 ~ Licensed under the Apache License, Version 2.0 (the "License"); 6 ~ you may not use this file except in compliance with the License. 7 ~ You may obtain a copy of the License at 8 ~ 9 ~ http://www.apache.org/licenses/LICENSE-2.0 10 ~ 11 ~ Unless required by applicable law or agreed to in writing, software 12 ~ distributed under the License is distributed on an "AS IS" BASIS, 13 ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 ~ See the License for the specific language governing permissions and 15 ~ limitations under the License. 16 --> 17 18<androidx.constraintlayout.widget.ConstraintLayout 19 xmlns:android="http://schemas.android.com/apk/res/android" 20 xmlns:app="http://schemas.android.com/apk/res-auto" 21 android:layout_width="match_parent" 22 android:layout_height="match_parent"> 23 24 <fragment 25 android:id="@+id/nav_host_fragment" 26 android:name="androidx.navigation.fragment.NavHostFragment" 27 android:layout_width="match_parent" 28 android:layout_height="match_parent" 29 app:defaultNavHost="true" /> 30 31</androidx.constraintlayout.widget.ConstraintLayout> 32