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基本上我需要跳过在导航组件中声明的一行 Fragments 中的第一个 Fragment，但来自 MainActivity。现在我已经尝试了我可以在网上找到的每一个修复和解决方案，但到目前为止没有任何帮助。

我的代码在 MainActivity 中如下所示：

@AndroidEntryPoint
class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        requestWindowFeature(Window.FEATURE_NO_TITLE)
        supportActionBar?.hide()
        setContentView(R.layout.schedule_activity)
    }
}

如果用户将字符串存储在本地配置中，我需要更改当前 NavGraph 的 3 个片段的起始目的地，但仍然需要能够导航回“跳过”的片段加载。我在这里不知所措，这个问题可能对这里的某人有一个非常明显的解决方案。

我将非常感谢我能得到的任何帮助，并提前感谢大家！

编辑：更新的代码给了我堆栈跟踪

@Inject lateinit var dataRepo: DataStoreRepo
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        requestWindowFeature(Window.FEATURE_NO_TITLE)
        supportActionBar?.hide()

        val navHostFragment =
            supportFragmentManager.findFragmentById(R.id.schedule_nav_host_fragment) as NavHostFragment
        val navController = navHostFragment.navController
        val navGraph = navController.navInflater.inflate(R.navigation.schedule_graph)

        if(hasFavorite()){
            navGraph.setStartDestination(R.id.scheduleListFragment)
        }else{
           navGraph.setStartDestination(R.id.selectionMenu)
        }
        navController.graph = navGraph
        
        setContentView(R.layout.schedule_activity)
    }

错误的完整堆栈跟踪：

2022-03-01 21:24:47.019 18504-18504/com.tumble.kronoxtoapp E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.tumble.kronoxtoapp, PID: 18504
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.tumble.kronoxtoapp/com.tumble.kronoxtoapp.kronoxapp.presentation.MainActivity}: java.lang.NullPointerException: null cannot be cast to non-null type androidx.navigation.fragment.NavHostFragment
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3528)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3703)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2152)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:250)
        at android.app.ActivityThread.main(ActivityThread.java:7886)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:970)
     Caused by: java.lang.NullPointerException: null cannot be cast to non-null type androidx.navigation.fragment.NavHostFragment
        at com.tumble.kronoxtoapp.kronoxapp.presentation.MainActivity.onCreate(MainActivity.kt:35)
        at android.app.Activity.performCreate(Activity.java:8108)
        at android.app.Activity.performCreate(Activity.java:8092)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1309)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3501)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3703) 
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85) 
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) 
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2152) 
        at android.os.Handler.dispatchMessage(Handler.java:106) 
        at android.os.Looper.loop(Looper.java:250) 
        at android.app.ActivityThread.main(ActivityThread.java:7886)```
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