导航到另一个动态模块中的某个片段

Question

是否有任何方法可以从另一个动态模块导航到某个片段，而不导航到起始目的地？如果没有，有什么替代方案？

<fragment
android:id="@+id/loginFragment"
android:name="com.example.feature.login.presentation.LoginFragment"
android:label="LoginFragment">
<action
android:id="@+id/actionLoginToHome"
app:destination="@id/featureHomeNavGraph" />
</fragment>
<include-dynamic
android:id="@+id/featureHomeNavGraph"
app:graphResName="feature_home_nav_graph"
app:moduleName="feature_home" />

虽然这段代码运行良好，但它会将我导航到起始目的地，但我需要导航到另一个目的地。

Answer 1

解决方案1:导航到特定片段，不使用<include-dynamic>

<fragment
android:id="@+id/profileDetailsFragment"
android:name="com.example.feature.profiles.presentation.details.ProfileDetailsFragment"
android:label="Profile Details"
app:moduleName="feature_profiles" />

解决方案2:创建一个具有不同起始目的地的新图形XML。

Answer 2

对于嵌入式导航图，一个很好的方法是使用空白的导航片段。您的操作转到这个片段，然后向它发送关于下一步导航位置的参数。一些示例代码：

class NavigatorFragment : Fragment() {
companion object {
const val REQUEST_PAGE_NAME = "REQUEST_PAGE_NAME"
const val PAGE_TYPE_ACTIVATE_CARD = "PAGE_TYPE_ACTIVATE_CARD"
const val PAGE_TYPE_CREDIT_LIMIT = "PAGE_TYPE_CREDIT_LIMIT"
const val PAGE_TYPE_SCC_HUB = "PAGE_TYPE_SCC_HUB"
const val PAGE_TYPE_ABOUT_CARD = "about_card"
const val PAGE_TYPE_MAKE_PAYMENT = "PAGE_TYPE_MAKE_PAYMENT"
fun createBundle(pageName: String) =
Bundle().apply {
putString(REQUEST_PAGE_NAME, pageName)
}
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
when (arguments?.getString(REQUEST_PAGE_NAME)) {
PAGE_TYPE_ACTIVATE_CARD -> 
findNavController().navigate(R.id.to_activateSecuredCard)
PAGE_TYPE_CREDIT_LIMIT -> 
findNavController().navigate(R.id.to_creditLimit)
PAGE_TYPE_ABOUT_CARD -> 
findNavController().navigate(R.id.to_aboutSecuredCard, arguments)
PAGE_TYPE_SCC_HUB -> 
findNavController().navigate(R.id.to_sccHub)
PAGE_TYPE_MAKE_PAYMENT -> 
findNavController().navigate(R.id.to_sccMakePayment)
}
}
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
val binding: FragmentSecuredCardNavigatorBinding = DataBindingUtil.inflate(inflater, R.layout.fragment_secured_card_navigator, container, false)
binding.lifecycleOwner = viewLifecycleOwner

if (findNavController()
.currentDestination.toString()
.contains(this.javaClass.name)
){
findNavController().popBackStack()
}
return binding.root
}
}

主导航：

<?xml version="1.0" encoding="utf-8"?>
<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"
app:startDestination="@+id/home_dashboard_fragment">
<include app:graph="@navigation/nav_graph_secured_card" />
<!-- rest of navigation graph-->
.....
</navigation>

安全卡导航：

<?xml version="1.0" encoding="utf-8"?>
<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/nav_root_secured_card"
app:startDestination="@id/securedCardNavigator">
<fragment
android:id="@+id/securedCardNavigator"
android:name="com.greendotcorp.securedcard.fragment.NavigatorFragment">
<action
android:id="@+id/to_activateSecuredCard"
app:destination="@+id/activateSecuredCard"
app:popUpTo="@+id/securedCardNavigator"
app:popUpToInclusive="true" />
</fragment>
</navigation>

导航到安全卡导航：

findNavController().navigate(R.id.nav_root_secured_card, NavigatorFragment.createBundle(NavigatorFragment.PAGE_TYPE_SCC_HUB))