[androidx.navigation库已更新至2.2.2版本发行版本问题

Question

我在androidx.navigation最近更新时遇到问题

我已经注意到，如果构建为RELEASE，则在全新更新后[[（2.2.2）崩溃了错误，例如

Caused by: android.view.InflateException: Binary XML file line #12 in 
com.somedomain.android:layout/activity_main: Binary XML file line #12 in 
com.somedomain.android:layout/activity_main: Error inflating class 
androidx.fragment.app.FragmentContainerView


Caused by: android.view.InflateException: Binary XML file line #12 in 
com.somedomain.android:layout/activity_main: Error inflating class 
androidx.fragment.app.FragmentContainerView

androidx.fragment.app.Fragment$e: Unable to instantiate fragment 
androidx.navigation.fragment.NavHostFragment: make sure class name exists

我正在使用：
ext.versions = [
   ...
   nav_version        : '2.2.2',
]

ext.libs = [
   ...
   nav_fragment       : "androidx.navigation:navigation-fragment-ktx:$versions.nav_version",
   nav_ui             : "androidx.navigation:navigation-ui-ktx:$versions.nav_version",
]

在应用程式内gradle
 ...
    buildTypes {
        debug {
            manifestPlaceholders = [crashlyticsCollectionEnabled: "false"]
            ext.enableCrashlytics = false
            signingConfig signingConfigs.debug
            debuggable = true
        }

        release {
            manifestPlaceholders = [crashlyticsCollectionEnabled: "true"]
            ext.enableCrashlytics = true
            minifyEnabled true
            shrinkResources true
            debuggable = false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            signingConfig signingConfigs.release
        }
    }
    ...
implementation libs.nav_fragment
implementation libs.nav_ui

activity_main.xml中的导航主机
<?xml version="1.0" encoding="utf-8"?>
   <layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context=".MainActivity">

    <FrameLayout
        android:id="@+id/container"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <androidx.fragment.app.FragmentContainerView
            android:id="@+id/main_nav_host"
            android:name="androidx.navigation.fragment.NavHostFragment"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:defaultNavHost="true"
            app:navGraph="@navigation/main_navigation" />

    </FrameLayout>

</layout>

语言：Kotlin
有人面对这样的问题吗？
注意：使用2.2.1版时，一切正常。调试版本建立就可以了
我认为与此更改有关的问题。根据官方的Android导航组件release notes
Navigation-common-ktx ProGuard规则现在只能正确保留使用的NavArgs类，而不是所有NavArgs实例。它先前在Navigation 2.3.0-alpha03中发布。 （b / 150213558

Answer 1

需要添加-keep class androidx.navigation.fragment.NavHostFragment

在

proguard-rules.pro文件中。