dialogfragment中的setTargetFragment不工作-android

我在另一个

片段中调用一个
对话框片段
，如下所示：

@CoursesFragmentScope
class CoursesFragment : DaggerFragment(),
    DefaultLifecycleObserver,
    CourseTypeListDialogFragment.ApplySelectedCourseTypeFilter {
    @OnClick(R.id.btnCourseType)
    fun btnCourseTypeClick() {

        val fm = activity!!.supportFragmentManager
        val courseTypeListDialogFragment =
            CourseTypeListDialogFragment()
        courseTypeListDialogFragment.isCancelable = false
        courseTypeListDialogFragment.setStyle(
            DialogFragment.STYLE_NO_TITLE,
            0
        )
        courseTypeListDialogFragment.setTargetFragment(this, 1)
        courseTypeListDialogFragment.show(fm, "")
    }
}

class CourseTypeListDialogFragment: DaggerAppCompatDialogFragment(), CourseTypeAdapter.CourseTypeListener {
    interface ApplySelectedCourseTypeFilter {
        fun applySelectedCourseType()
    }
..some code..
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        ButterKnife.bind(this, view)
        iApplySelectedCourseTypeFilter = targetFragment as ApplySelectedCourseTypeFilter
     }
..some code..
}

class MainActivity : DaggerAppCompatActivity() {
    @BindView(R.id.nav_view)
    lateinit var navView: BottomNavigationView

    override fun onCreate(savedInstanceState: Bundle?) {
        super<DaggerAppCompatActivity>.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        ButterKnife.bind(this)

        val navController = findNavController(R.id.nav_host_fragment)
        navView.setupWithNavController(navController)
        navView.menu.findItem(R.id.navigation_courses).setIcon(
            IconDrawable(this, MaterialCommunityIcons.mdi_account_box)
                .colorRes(R.color.colorPrimaryDark)
                .actionBarSize())

        navView.menu.findItem(R.id.navigation_login).setIcon(
            IconDrawable(this, MaterialCommunityIcons.mdi_login)
                .colorRes(R.color.colorPrimaryDark)
                .actionBarSize())

    }
}

我的
对话框片段
如下所示：

@CoursesFragmentScope
class CoursesFragment : DaggerFragment(),
    DefaultLifecycleObserver,
    CourseTypeListDialogFragment.ApplySelectedCourseTypeFilter {
    @OnClick(R.id.btnCourseType)
    fun btnCourseTypeClick() {

        val fm = activity!!.supportFragmentManager
        val courseTypeListDialogFragment =
            CourseTypeListDialogFragment()
        courseTypeListDialogFragment.isCancelable = false
        courseTypeListDialogFragment.setStyle(
            DialogFragment.STYLE_NO_TITLE,
            0
        )
        courseTypeListDialogFragment.setTargetFragment(this, 1)
        courseTypeListDialogFragment.show(fm, "")
    }
}

class CourseTypeListDialogFragment: DaggerAppCompatDialogFragment(), CourseTypeAdapter.CourseTypeListener {
    interface ApplySelectedCourseTypeFilter {
        fun applySelectedCourseType()
    }
..some code..
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        ButterKnife.bind(this, view)
        iApplySelectedCourseTypeFilter = targetFragment as ApplySelectedCourseTypeFilter
     }
..some code..
}

class MainActivity : DaggerAppCompatActivity() {
    @BindView(R.id.nav_view)
    lateinit var navView: BottomNavigationView

    override fun onCreate(savedInstanceState: Bundle?) {
        super<DaggerAppCompatActivity>.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        ButterKnife.bind(this)

        val navController = findNavController(R.id.nav_host_fragment)
        navView.setupWithNavController(navController)
        navView.menu.findItem(R.id.navigation_courses).setIcon(
            IconDrawable(this, MaterialCommunityIcons.mdi_account_box)
                .colorRes(R.color.colorPrimaryDark)
                .actionBarSize())

        navView.menu.findItem(R.id.navigation_login).setIcon(
            IconDrawable(this, MaterialCommunityIcons.mdi_login)
                .colorRes(R.color.colorPrimaryDark)
                .actionBarSize())

    }
}

但请在这行中告诉我以下
错误
：

courseTypeListDialogFragment.setTargetFragment(this, 1)

告诉我：

Fragment CourseTypeListDialogFragment{92f4a96 (cbe1689e-1367-4436-8de6-3797320e7d41) } declared target fragment CoursesFragment{422cc09 (9d16e30b-fd71-44a8-8c45-8a866b62c135) id=0x7f0800d5} that does not belong to this FragmentManager!

我能做什么

两个类都来自同一个包：

import dagger.android.support.DaggerAppCompatDialogFragment
import dagger.android.support.DaggerFragment

我删除了
courseTypeListDialogFragment.setTargetFragment（这个，1）
并打开了对话框，但没有在
对话框中使用我的
界面

我在
活动中使用from
片段
，如下所示：

@CoursesFragmentScope
class CoursesFragment : DaggerFragment(),
    DefaultLifecycleObserver,
    CourseTypeListDialogFragment.ApplySelectedCourseTypeFilter {
    @OnClick(R.id.btnCourseType)
    fun btnCourseTypeClick() {

        val fm = activity!!.supportFragmentManager
        val courseTypeListDialogFragment =
            CourseTypeListDialogFragment()
        courseTypeListDialogFragment.isCancelable = false
        courseTypeListDialogFragment.setStyle(
            DialogFragment.STYLE_NO_TITLE,
            0
        )
        courseTypeListDialogFragment.setTargetFragment(this, 1)
        courseTypeListDialogFragment.show(fm, "")
    }
}

class CourseTypeListDialogFragment: DaggerAppCompatDialogFragment(), CourseTypeAdapter.CourseTypeListener {
    interface ApplySelectedCourseTypeFilter {
        fun applySelectedCourseType()
    }
..some code..
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        ButterKnife.bind(this, view)
        iApplySelectedCourseTypeFilter = targetFragment as ApplySelectedCourseTypeFilter
     }
..some code..
}

class MainActivity : DaggerAppCompatActivity() {
    @BindView(R.id.nav_view)
    lateinit var navView: BottomNavigationView

    override fun onCreate(savedInstanceState: Bundle?) {
        super<DaggerAppCompatActivity>.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        ButterKnife.bind(this)

        val navController = findNavController(R.id.nav_host_fragment)
        navView.setupWithNavController(navController)
        navView.menu.findItem(R.id.navigation_courses).setIcon(
            IconDrawable(this, MaterialCommunityIcons.mdi_account_box)
                .colorRes(R.color.colorPrimaryDark)
                .actionBarSize())

        navView.menu.findItem(R.id.navigation_login).setIcon(
            IconDrawable(this, MaterialCommunityIcons.mdi_login)
                .colorRes(R.color.colorPrimaryDark)
                .actionBarSize())

    }
}

class MainActivity:DaggerAppCompative（）{
@BindView（R.id.nav_视图）
lateinit变量navView:BottomNavigationView
重写创建时的乐趣（savedInstanceState:Bundle？）{
super.onCreate（savedInstanceState）
setContentView（R.layout.activity_main）
黄油刀，绑（这个）
val navController=findNavController（R.id.nav_主机_片段）
navView.setupWithNavController（navController）
navView.menu.findItem（R.id.navigation\U课程）.设置图标(
ICondravable（此处为MaterialCommunicationIcons.mdi\u账户框）
.colorRes（R.color.colorPrimaryDark）
.actionBarSize（））
navView.menu.findItem（R.id.navigation\u login）.setIcon(
ICondravable（这是MaterialCommunicationIcons.mdi_登录名）
.colorRes（R.color.colorPrimaryDark）
.actionBarSize（））
}
}
更改此行

val fm = activity!!.supportFragmentManager

到

阅读以下博客

@Fahad Alotaibi。我找不到任何childFragmentManager。您是如何添加的。CoursesFragment您是否使用了supportFragmentManager？@Fahad Alotaibi。更新了我的问题。此问题与碎片管理器有关。请参阅更新的答案