I have a fragment A where an action is originated to fragment B which have to receive an argument. When I try to set the argument before navigate, 'FragmentADirections' class can't be resolve. The fact is, I have a fragment C going to D with an argument to and this work well for these two.
Fragment A class ('EntrainementAction'):
package com.example.androidsportsomveille.Fragments;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.navigation.Navigation;
import com.example.androidsportsomveille.Classes.Entrainement;
import com.example.androidsportsomveille.R;
public class EntrainementAction extends Fragment {
private Entrainement entrainement;
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_entrainement_action, container, false);
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
this.entrainement = EntrainementActionArgs.fromBundle(getArguments()).getMyEntrainement();
// Remplis le layout avec les données de l'enrainement
populateLayout();
// Aller à la gestion de l'entrainement
Button btnGestion = view.findViewById(R.id.btnGestionEntrainement);
btnGestion.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Set de l'argument puis navigation
EntrainementActionDirections.ActionEntrainementActionToEntrainementGestion action =
EntrainementActionDirections.actionEntrainementActionToEntrainementGestion(entrainement);
Navigation.findNavController(view).navigate(action);
}
});
}
public void populateLayout() {
TextView txtNom = getView().findViewById(R.id.txtNomEntrainement);
txtNom.setText(this.entrainement.getNom());
}
}
Error appear in 'btnGestion.setOnClickListener' where 'EntrainementActionDirections' cannot be resolve. Note that I have other Directions class well generated.
My nav_graph.xml file:
<?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_graph"
app:startDestination="@id/entrainementListe">
<fragment
android:id="@+id/entrainementListe"
android:name="com.example.androidsportsomveille.Fragments.EntrainementListe"
android:label="fragment_entrainement_liste"
tools:layout="@layout/fragment_entrainement_liste" >
<action
android:id="@+id/action_entrainementListe_to_entrainementNouveau"
app:destination="@id/entrainementNouveau" />
<action
android:id="@+id/action_entrainementListe_to_entrainementAction"
app:destination="@id/entrainementAction" />
</fragment>
<fragment
android:id="@+id/entrainementNouveau"
android:name="com.example.androidsportsomveille.Fragments.EntrainementNouveau"
android:label="fragment_entrainement_nouveau"
tools:layout="@layout/fragment_entrainement_nouveau" >
<action
android:id="@+id/action_entrainementNouveau_to_entrainementGestion"
app:destination="@id/entrainementGestion" />
</fragment>
<fragment
android:id="@+id/entrainementAction"
android:name="com.example.androidsportsomveille.Fragments.EntrainementAction"
android:label="fragment_entrainement_action"
tools:layout="@layout/fragment_entrainement_action" >
<argument
android:name="myEntrainement"
app:argType="com.example.androidsportsomveille.Classes.Entrainement" />
<action
android:id="@+id/action_entrainementAction_to_entrainementGestion"
app:destination="@id/entrainementGestion" />
</fragment>
<fragment
android:id="@+id/entrainementGestion"
android:name="com.example.androidsportsomveille.Fragments.EntrainementGestion"
android:label="fragment_entrainement_gestion"
tools:layout="@layout/fragment_entrainement_gestion" >
<action
android:id="@+id/action_entrainementGestion_to_entrainementAction"
app:destination="@id/entrainementAction" />
<argument
android:name="myEntrainement"
app:argType="com.example.androidsportsomveille.Classes.Entrainement" />
</fragment>
</navigation>
Fragments 'entrainementAction' and 'entrainementGestion' haven't Directions class generated while 'entrainementListe' and 'entrainementNouveau' have. All fragment's xml files exists.
In the Project window, right-click on the res directory and select New > Android Resource File. The New Resource File dialog appears. Type a name in the File name field, such as "nav_graph". Select Navigation from the Resource type drop-down list, and then click OK.
Navigation is a framework for navigating between 'destinations' within an Android application that provides a consistent API whether destinations are implemented as Fragments, Activities, or other components. Latest Update. Stable Release. Release Candidate. Beta Release.
NavHostFragment provides an area within your layout for self-contained navigation to occur. NavHostFragment is intended to be used as the content area within a layout resource defining your app's chrome around it, e.g.: <androidx.drawerlayout.widget.DrawerLayout.
A navigation graph is a resource file that contains all of your app's destinations along with the logical connections, or actions, that users can take to navigate from one destination to another. You can manage your app's navigation graph using the Navigation Editor in Android Studio.
double-check to have this in your app Gradle (at top)
plugins {
id "androidx.navigation.safeargs.kotlin"
}
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