android - 重复的 id，标签为空，带有 androidx.navigation.fragment.NavHostFragment 的另一个 fragment

Question

问题
我正在尝试在 Activity 中添加一个 fragment 以及导航。但我看到以下错误

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.app.myapp/com.app.myapp.HomeMainActivity}: android.view.InflateException: Binary XML file line #12: Binary XML file line #12: Error inflating class fragment
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2927)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2988)
    at android.app.ActivityThread.-wrap14(ActivityThread.java)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1631)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:154)
    at android.app.ActivityThread.main(ActivityThread.java:6682)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410)
 Caused by: android.view.InflateException: Binary XML file line #12: Binary XML file line #12: Error inflating class fragment
 Caused by: android.view.InflateException: Binary XML file line #12: Error inflating class fragment
 Caused by: java.lang.IllegalArgumentException: Binary XML file line #12: Duplicate id 0x7f0900ed, tag null, or parent id 0xffffffff with another fragment for androidx.navigation.fragment.NavHostFragment

代码

activity_home_new.xml

    <?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">
      <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/colorPrimaryDark"
        tools:context=".HomeMainActivity">

        <fragment
        android:id="@+id/my_nav_host_fragment"
        android:name="androidx.navigation.fragment.NavHostFragment"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:defaultNavHost="true"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:navGraph="@navigation/nav_graph" />
       </androidx.constraintlayout.widget.ConstraintLayout>

       </layout>

在 Fragment 和 Activity 类中没有进行任何更改。

我试过的解决方案

我尝试在 ctivity_home_new.xml 中将 fragment 更改为 framelayout 和 FragmentContainerView 应用程序没有；碰撞。

我对崩溃的看法

崩溃与“androidx.navigation.fragment.NavHostFragment”有关。
与 MapFragment 相关的类似问题很少。

不找代码，只想知道崩溃的根本原因

Answer 1

看来 NavHostFragment 只是一个巧合的 passwalker。此问题与两次膨胀 XML 内容有关。
就我而言，我在做什么:

override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        binding = ActivitySigninBinding.inflate(layoutInflater)
        setContentView(R.layout.activity_signin)
}

它一直在工作，直到我将我的内容分成更多的 fragment 。解决方法是:

 override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        binding = ActivitySigninBinding.inflate(layoutInflater)
        setContentView(binding.root) // Notice the binding root
}

希望对您有所帮助，花点时间弄清楚。