IllegalStateException: Link does not have a NavController set
android, android-architecture-components, android-architecture-navigation
Solution
UPDATED SOLUTION
Actually, Navigation can't find NavController in FrameLayout. So replacing `<FrameLayout>` with `<fragment>` will make it work .
Add the following inside the `<fragment>` tag -
android:name="androidx.navigation.fragment.NavHostFragment"
After doing the changes, the code will look similar to this -
<fragment
android:id="@+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
android:name="androidx.navigation.fragment.NavHostFragment"
app:navGraph="@navigation/main_navigation"
app:defaultNavHost="true"/>
Problem
I'm using Android Navigation Component for Navigation. I have a LoginFragment which has a button to transition to SignUpFragment. On clicking the button I'm getting this error. ``` java.lang.IllegalStateException: View android.support.v7.widget.AppCompatButton{49d9bd1 VFED..C.. ...P.... 201,917-782,1061 #7f090172 app:id/signUpLink} does not have a NavController set ``` Here is my nav_graph.xml ``` <navigation xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" app:startDestination="@id/loginFragment"> <fragment android:id="@+id/loginFragment" android:name="org.test.oe.app.core.auth.login.LoginFragment" android:label="login_fragment" tools:layout="@layout/login_fragment"> <action android:id="@+id/action_loginFragment_to_signUpFragment" app:destination="@id/signUpFragment" /> </fragment> </navigation> ``` Here is the code in LoginFragment for Navigation - ``` binding.signUpLink.setOnClickListener(Navigation.createNavigateOnClickListener(R.id.action_loginFragment_to_signUpFragment, null)); ``` Here is extract from activity layout file for NavHostFragment - ``` <FrameLayout android:id="@+id/fragment_container" android:layout_width="match_parent" android:layout_height="match_parent" app:layout_behavior="@string/appbar_scrolling_view_behavior" android:name="android.navigation.fragment.NavHostFragment" app:navGraph="@navigation/main_navigation" app:defaultNavHost="true"/> ```