参考文章

Glide 4.x添加自定义组件原理
Glide 系列-1：预热、Glide 的常用配置方式及其原理
Glide 4.0 详解

问题描述

在加载图片的时候，经常会出现连接超时的现象发生，导致无法加载出图片

Glide 3.5.2、okhttp3 版本

com.github.bumptech.glide:glide:3.5.2
com.squareup.okhttp3:okhttp:3.5.0

解决办法

implementation 'com.github.bumptech.glide:okhttp3-integration:1.5.0'

public class MyGlideModule implements  GlideModule {
    @Override
    public void applyOptions(Context context, GlideBuilder builder) {
    }
    @Override
    public void registerComponents(Context context, Glide glide) {
     OkHttpClient client = new OkHttpClient.Builder()
                .readTimeout(30, TimeUnit.SECONDS)
                .writeTimeout(30, TimeUnit.SECONDS)
                .connectTimeout(30, TimeUnit.SECONDS)
                .build();
        OkHttpUrlLoader.Factory factory = new OkHttpUrlLoader.Factory(client);
        //注册使用Okhttp发起网络访问
        glide.register(GlideUrl.class, InputStream.class, factory);
    }
}

 <application
      ...>
       <meta-data
            android:name="com.xxxxxx.MyGlideModule"
            android:value="GlideModule" />
</applicaton>

Glide 4.9.0、okhttp3 版本

implementation 'com.squareup.okhttp3:okhttp:4.0.1'
implementation 'com.github.bumptech.glide:glide:4.9.0'
implementation 'com.github.bumptech.glide:annotations:4.9.0'
annotationProcessor 'com.github.bumptech.glide:compiler:4.9.0'
implementation 'com.github.bumptech.glide:okhttp3-integration:4.9.0'
特别说明:glide:compiler 需要在主model里面，否则会扫描不到注解

@GlideModule
public class FlickrGlideModule extends AppGlideModule {
    @Override
    public void applyOptions( Context context, GlideBuilder builder) {
        super.applyOptions(context, builder);
    }

    @Override
    public void registerComponents(Context context, Glide glide,Registry registry) {
        OkHttpClient okHttpClient = new OkHttpClient.Builder()
                .connectTimeout(30, TimeUnit.SECONDS)
                .writeTimeout(30, TimeUnit.SECONDS)
                .readTimeout(30, TimeUnit.SECONDS)
                .build();
        registry.replace(GlideUrl.class, InputStream.class, new OkHttpUrlLoader.Factory(okHttpClient));
    }

    // 关闭扫描清单文件
    @Override
    public boolean isManifestParsingEnabled() {
        return false;
    }
}

防止混淆

-keep public class * implements com.bumptech.glide.module.GlideModule
-keep public class * extends com.bumptech.glide.module.AppGlideModule
-keep public enum com.bumptech.glide.load.ImageHeaderParser$** {
  **[] $VALUES;
  public *;
}
-keep public class  extends com.bumptech.glide.module.AppGlideModule
-keep class com.bumptech.glide.GeneratedAppGlideModuleImpl

一个项目里面只能有一个AppGlideModule，或者很多的LibraryGlideModule