Glide报错：找不到GeneratedAppGlideModule，RecyclerView图片加载异常

运行应用时出现以下Glide警告，且RecyclerView中图片加载异常，但应用其他区域Glide加载图片正常：

W/Glide: Failed to find GeneratedAppGlideModule. You should include an annotationProcessor compile dependency on com.github.bumptech.glide:compiler in your application and a @GlideModule annotated AppGlideModule implementation or LibraryGlideModules will be silently ignored

相关代码 #

行布局代码 #

<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="@dimen/_180sdp"
    android:layout_height="@dimen/_90sdp"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    app:cardCornerRadius="@dimen/_10sdp"
    app:cardUseCompatPadding="true"
    android:elevation="@dimen/_3sdp"
    >

    <ImageView
        android:id="@+id/img_popular_meal_item"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:scaleType="centerCrop"></ImageView>
</androidx.cardview.widget.CardView>

RecyclerView布局代码 #

<androidx.recyclerview.widget.RecyclerView
        android:id="@+id/rec_view_meals_popular"
        android:layout_width="wrap_content"
        android:layout_height="@dimen/_90sdp"
        android:layout_marginStart="@dimen/_25sdp"
        android:layout_marginEnd="@dimen/_10sdp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/tv_over_popular_items"/>

Adapter类代码 #

class MostPopularAdapter(): RecyclerView.Adapter<MostPopularAdapter.PopularMealViewHolder>() {

    private var mealsList = ArrayList<CategoryMeal>()

    fun setMeal(mealsList:ArrayList<CategoryMeal>) {
        this.mealsList=mealsList
        notifyDataSetChanged()
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): PopularMealViewHolder {
       return PopularMealViewHolder(PopularItemsRowLayoutBinding.inflate(LayoutInflater.from(parent.context),parent,false))
    }

    override fun onBindViewHolder(holder: PopularMealViewHolder, position: Int) {
       Glide.with(holder.itemView)
           .load(mealsList[position].strMealThumb)
           .into(holder.binding.imgPopularMealItem)
    }

    override fun getItemCount(): Int {
        return mealsList.size
    }

    inner class PopularMealViewHolder( var binding: PopularItemsRowLayoutBinding):RecyclerView.ViewHolder(binding.root)
}

HomeFragment代码 #

class HomeFragment : Fragment() {

    lateinit var binding: FragmentHomeBinding
    lateinit var homeViewModel:HomeViewModel
    lateinit var randomMeal: Meal
    lateinit var popularItemAdapter: MostPopularAdapter
    var mealsList = ArrayList<CategoryMeal>()

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        val repository = Repository()
        val homeViewModelFactory = HomeViewModelFactory(repository)
        homeViewModel=ViewModelProvider(this,homeViewModelFactory).get(HomeViewModel::class.java)

        popularItemAdapter= MostPopularAdapter()
    }

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?): View? {
        binding= FragmentHomeBinding.inflate(inflater,container,false)
        return binding.root
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        preparePopularItemsRecyclerView()
        observePopularItems()
    }

    fun observePopularItems(){
        homeViewModel.getPopularItems("Seafood")
        homeViewModel.result.observe(viewLifecycleOwner, Observer {
            popularItemAdapter.setMeal(mealsList)
        })
    }

    // setup RecyclerView
    fun preparePopularItemsRecyclerView(){
        binding.recViewMealsPopular.apply {
            layoutManager=LinearLayoutManager(activity,LinearLayoutManager.HORIZONTAL,false)
            adapter=popularItemAdapter
        }
    }
}

已尝试的无效方案 #

创建了GlideAppModule类，但尝试用GlideAppModule.with(...)替代Glide.with(...)时，编译器找不到with()方法：

import com.bumptech.glide.annotation.GlideModule
import com.bumptech.glide.module.AppGlideModule

@GlideModule
class GlideAppModule: AppGlideModule()

正确解决方案 #

1. 添加Glide编译器依赖 #

在模块级build.gradle中添加与Glide核心库版本一致的注解处理器依赖：

dependencies {
    implementation 'com.github.bumptech.glide:glide:4.16.0'
    annotationProcessor 'com.github.bumptech.glide:compiler:4.16.0'
}

2. 使用自动生成的GlideApp类 #

创建GlideAppModule后，执行Rebuild Project，Glide会自动生成GlideApp类（无需手动调用自己写的GlideAppModule）。修改Adapter中的Glide调用：

GlideApp.with(holder.itemView)
    .load(mealsList[position].strMealThumb)
    .into(holder.binding.imgPopularMealItem)

3. 修复HomeFragment数据传递问题 #

observePopularItems方法中未将ViewModel返回的结果赋值给mealsList，导致Adapter拿到空列表，修改代码：

fun observePopularItems(){
    homeViewModel.getPopularItems("Seafood")
    homeViewModel.result.observe(viewLifecycleOwner, Observer { result ->
        mealsList = result as ArrayList<CategoryMeal>
        popularItemAdapter.setMeal(mealsList)
    })
}

4. 清理并重建项目 #

执行Clean Project -> Rebuild Project，确保注解处理器生成GlideApp类并清除编译缓存。

内容的提问来源于stack exchange，提问作者Beginner developer