使用navArgs将Fragment转换为Dialog Fragment，如何从Fragment类外部导航到Dialog

Question

我想导航到DetailsFragment点击列表项(book_item.xml(

book_item.xml

<LinearLayout 
...
onBooksClickListener="@{result}">
... 
</LinearLayout>

现在它适用于碎片(全屏(

我想让它覆盖片段，所以想把它转换成对话框片段

片段的工作代码

碎片类

class DetailsFragment : Fragment() {
private val args by navArgs<DetailsFragmentArgs>()
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?): View? {
val view = inflater.inflate(R.layout.fragment_details, container, false)
}
}

行绑定类

class BooksRowBinding  {
companion object {
@ExperimentalCoroutinesApi
@BindingAdapter("onBooksClickListener")
@JvmStatic
fun onBooksClickListener(linearLayout: LinearLayout, result: Result){
linearLayout.setOnClickListener{
try {
val action = BooksListFragmentDirections.actionBooksListFragmentToDetailsFragment(result)
linearLayout.findNavController().navigate(action)
}catch (e: Exception){
Log.d("OnBooksClickListener",e.toString())
}
}
}

为了将其转换为DailogFragment，我尝试使用谷歌android文档，但它没有解释如何从Fragment类之外打开dialogFragment

DialogFragment的损坏代码

碎片类

class DetailsFragment : DailogFragment() {
private val args by navArgs<DetailsFragmentArgs>()
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?): View? {
val view = inflater.inflate(R.layout.fragment_details, container, false)
}
}

行绑定类

class BooksRowBinding  {
companion object {
@ExperimentalCoroutinesApi
@BindingAdapter("onBooksClickListener")
@JvmStatic
fun onBooksClickListener(linearLayout: LinearLayout, result: Result){
linearLayout.setOnClickListener{
try {
DetailsFragment().show(childFragmentManager,DetailsFragment.TAG) 
/****************ERROR *******************
this works only if you call this from within the 
onCreateMethod of the Fragment
******************************************/
}catch (e: Exception){
Log.d("OnBooksClickListener",e.toString())
}
}
}

现在我得到错误：Unresolved reference: childFragmentManager

my_nav.xml

<navigation 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"
android:id="@+id/my_nav"
app:startDestination="@id/booksListFragment">
<fragment
android:id="@+id/booksListFragment"
android:name="we.are.suvikranth.ui.BooksListFragment"
android:label="Suvikranth"
tools:layout="@layout/fragment_books_list">

<action
android:id="@+id/action_booksListFragment_to_detailsFragment"
app:destination="@id/detailsFragment" />
</fragment>
<fragment 
android:id="@+id/detailsFragment"
android:name="we.are.suvikranth.ui.DetailsFragment"
android:label="Books Details"
tools:layout="@layout/fragment_details" >
<argument
android:name="result"
app:argType="we.are.suvikranth.models.Result" />
</fragment>
</navigation>

Answer 1

使用前面的代码导航到对话框Fragment

但将片段更改为my_nav.xml中的对话框

现在RowBinding类看起来像

class BooksRowBinding  {
companion object {
@ExperimentalCoroutinesApi
@BindingAdapter("onBooksClickListener")
@JvmStatic
fun onBooksClickListener(linearLayout: LinearLayout, result: Result){
linearLayout.setOnClickListener{
try {
val action = BooksListFragmentDirections.actionBooksListFragmentToDetailsFragment(result)
linearLayout.findNavController().navigate(action)
}catch (e: Exception){
Log.d("OnBooksClickListener",e.toString())
}
}
}

my_nav.xml看起来像

<navigation 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"
android:id="@+id/my_nav"
app:startDestination="@id/booksListFragment">
<fragment
android:id="@+id/booksListFragment"
android:name="we.are.suvikranth.ui.BooksListFragment"
android:label="Suvikranth"
tools:layout="@layout/fragment_books_list">

<action
android:id="@+id/action_booksListFragment_to_detailsFragment"
app:destination="@id/detailsFragment" />
</fragment>
<dialog
android:id="@+id/detailsFragment"
android:name="we.are.suvikranth.ui.DetailsFragment"
android:label="Books Details"
tools:layout="@layout/fragment_details" >
<argument
android:name="result"
app:argType="we.are.suvikranth.models.Result" />
</dialog>
</navigation>