使用 androidx.navigation:navigation 指南

最外层项目 build.gradle.kts 添加

plugins {
    id("com.android.application") version "8.1.1" apply false
    id("org.jetbrains.kotlin.android") version "1.9.0" apply false
    //id ("androidx.navigation.safeargs") version "2.5.0" apply false
}

app 对应的 build.gradle.kts 添加

plugins {
    id("com.android.application")
    id("org.jetbrains.kotlin.android")
    id("kotlin-kapt")
    //id("androidx.navigation.safeargs")
}

dependencies {
	....
	
    // Navigation library
    //implementation ("androidx.navigation:navigation-fragment-ktx:2.7.7")
    //implementation ("androidx.navigation:navigation-ui-ktx:2.7.7")
    
    ....
    }

res/layout/activity_main.xml

<androidx.fragment.app.FragmentContainerView
    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/fragment_container"
    android:name="androidx.navigation.fragment.NavHostFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:keepScreenOn="true"
    app:defaultNavHost="true"
    app:navGraph="@navigation/nav_graph"
    tools:context=".MainActivity"/>

res/navigation/nav_graph.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright 2020 The Android Open Source Project
  ~
  ~ Licensed under the Apache License, Version 2.0 (the "License");
  ~ you may not use this file except in compliance with the License.
  ~ You may obtain a copy of the License at
  ~
  ~     https://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing, software
  ~ distributed under the License is distributed on an "AS IS" BASIS,
  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ~ See the License for the specific language governing permissions and
  ~ limitations under the License.
  -->
<navigation
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/nav_graph"
    app:startDestination="@id/permissions_fragment">

    <fragment
        android:id="@+id/permissions_fragment"
        android:name="com.android.example.cameraxbasic.fragments.PermissionsFragment"
        android:label="PermissionsFragment" >

        <action
            android:id="@+id/action_permissions_to_camera"
            app:destination="@id/camera_fragment"
            app:popUpTo="@id/permissions_fragment"
            app:popUpToInclusive="true" />

    </fragment>

    <fragment
        android:id="@+id/camera_fragment"
        android:name="com.android.example.cameraxbasic.fragments.CameraFragment"
        android:label="CameraFragment" >

        <action
            android:id="@+id/action_camera_to_gallery"
            app:destination="@id/gallery_fragment" />

        <action
            android:id="@+id/action_camera_to_permissions"
            app:destination="@id/permissions_fragment"
            app:popUpTo="@id/camera_fragment"
            app:popUpToInclusive="true"/>

    </fragment>

    <fragment
        android:id="@+id/gallery_fragment"
        android:name="com.android.example.cameraxbasic.fragments.GalleryFragment"
        android:label="GalleryFragment" >
        <argument
            android:name="root_directory"
            app:argType="string" />
    </fragment>

</navigation>

使用：

import androidx.navigation.Navigation

    private fun navigateToCamera() {
        lifecycleScope.launchWhenStarted {
            Navigation.findNavController(requireActivity(), R.id.fragment_container).navigate(
                    PermissionsFragmentDirections.actionPermissionsToCamera())
        }
    }