导航组件 - 未生成方向类 [英] Navigation component - No Directions class generated

问题描述

我有一个片段 A，其中一个动作起源于必须接收参数的片段 B.当我尝试在导航之前设置参数时，无法解析FragmentADirections"类.事实是，我有一个片段 C 转到 D 并带有一个参数 ，这对这两个很有效.

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.

片段 A 类('EntrainementAction'):

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());
    }
}

错误出现在btnGestion.setOnClickListener"中，其中EntrainementActionDirections"无法解决.请注意，我已经很好地生成了其他 Directions 类.

Error appear in 'btnGestion.setOnClickListener' where 'EntrainementActionDirections' cannot be resolve. Note that I have other Directions class well generated.

我的 nav_graph.xml 文件:

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>

片段 'entrainementAction' 和 'entrainementGestion' 没有生成 Directions 类，而 'entrainementListe' 和 'entrainementNouveau' 有.所有片段的 xml 文件都存在.

Fragments 'entrainementAction' and 'entrainementGestion' haven't Directions class generated while 'entrainementListe' and 'entrainementNouveau' have. All fragment's xml files exists.

推荐答案

午休后，我启动了 android studio，然后生成了我的 Directions 类.我不知道为什么我不能早点使用它们.

After a lunch break, I launched android studio and then my Directions classes are generated. I don't know why I couldn't use them earlier.

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