com.bumptech.glide.load.engine.cache.LruResourceCache#com.jess.arms.http.imageloader.BaseImageLoaderStrategy源码实例Demo

@Override
public void applyOptions(@NonNull Context context, @NonNull GlideBuilder builder) {
    final AppComponent appComponent = ArmsUtils.obtainAppComponentFromContext(context);
    builder.setDiskCache(() -> {
        // Careful: the external cache directory doesn't enforce permissions
        return DiskLruCacheWrapper.create(DataHelper.makeDirs(new File(appComponent.cacheFile(), "Glide")), IMAGE_DISK_CACHE_MAX_SIZE);
    });

    MemorySizeCalculator calculator = new MemorySizeCalculator.Builder(context).build();
    int defaultMemoryCacheSize = calculator.getMemoryCacheSize();
    int defaultBitmapPoolSize = calculator.getBitmapPoolSize();

    int customMemoryCacheSize = (int) (1.2 * defaultMemoryCacheSize);
    int customBitmapPoolSize = (int) (1.2 * defaultBitmapPoolSize);

    builder.setMemoryCache(new LruResourceCache(customMemoryCacheSize));
    builder.setBitmapPool(new LruBitmapPool(customBitmapPoolSize));

    //将配置 Glide 的机会转交给 GlideImageLoaderStrategy,如你觉得框架提供的 GlideImageLoaderStrategy
    //并不能满足自己的需求,想自定义 BaseImageLoaderStrategy,那请你最好实现 GlideAppliesOptions
    //因为只有成为 GlideAppliesOptions 的实现类,这里才能调用 applyGlideOptions(),让你具有配置 Glide 的权利
    BaseImageLoaderStrategy loadImgStrategy = appComponent.imageLoader().getLoadImgStrategy();
    if (loadImgStrategy instanceof GlideAppliesOptions) {
        ((GlideAppliesOptions) loadImgStrategy).applyGlideOptions(context, builder);
    }
}
 

@Override
public void applyOptions(Context context, GlideBuilder builder) {
    AppComponent appComponent = ArmsUtils.obtainAppComponentFromContext(context);
    builder.setDiskCache(new DiskCache.Factory() {
        @Override
        public DiskCache build() {
            // Careful: the external cache directory doesn't enforce permissions
            return DiskLruCacheWrapper.get(DataHelper.makeDirs(new File(appComponent.cacheFile(), "Glide")), IMAGE_DISK_CACHE_MAX_SIZE);
        }
    });

    MemorySizeCalculator calculator = new MemorySizeCalculator.Builder(context).build();
    int defaultMemoryCacheSize = calculator.getMemoryCacheSize();
    int defaultBitmapPoolSize = calculator.getBitmapPoolSize();

    int customMemoryCacheSize = (int) (1.2 * defaultMemoryCacheSize);
    int customBitmapPoolSize = (int) (1.2 * defaultBitmapPoolSize);

    builder.setMemoryCache(new LruResourceCache(customMemoryCacheSize));
    builder.setBitmapPool(new LruBitmapPool(customBitmapPoolSize));

    //将配置 Glide 的机会转交给 GlideImageLoaderStrategy,如你觉得框架提供的 GlideImageLoaderStrategy
    //并不能满足自己的需求,想自定义 BaseImageLoaderStrategy,那请你最好实现 GlideAppliesOptions
    //因为只有成为 GlideAppliesOptions 的实现类,这里才能调用 applyGlideOptions(),让你具有配置 Glide 的权利
    BaseImageLoaderStrategy loadImgStrategy = appComponent.imageLoader().getLoadImgStrategy();
    if (loadImgStrategy instanceof GlideAppliesOptions) {
        ((GlideAppliesOptions) loadImgStrategy).applyGlideOptions(context, builder);
    }
}
 

/**
 * 提供图片加载框架,默认使用 {@link Glide}
 *
 * @return
 */
@Singleton
@Provides
@Nullable
BaseImageLoaderStrategy provideImageLoaderStrategy() {
    return mLoaderStrategy;
}
 

@Override
public void registerComponents(@NonNull Context context, @NonNull Glide glide, @NonNull Registry registry) {
    //Glide 默认使用 HttpURLConnection 做网络请求,在这切换成 Okhttp 请求
    AppComponent appComponent = ArmsUtils.obtainAppComponentFromContext(context);
    registry.replace(GlideUrl.class, InputStream.class, new OkHttpUrlLoader.Factory(appComponent.okHttpClient()));

    BaseImageLoaderStrategy loadImgStrategy = appComponent.imageLoader().getLoadImgStrategy();
    if (loadImgStrategy instanceof GlideAppliesOptions) {
        ((GlideAppliesOptions) loadImgStrategy).registerComponents(context, glide, registry);
    }
}
 

/**
 * 提供图片加载框架,默认使用 {@link Glide}
 *
 * @return
 */
@Singleton
@Provides
BaseImageLoaderStrategy provideImageLoaderStrategy() {
    return mLoaderStrategy == null ? new GlideImageLoaderStrategy() : mLoaderStrategy;
}
 

public Builder imageLoaderStrategy(BaseImageLoaderStrategy loaderStrategy) {//用来请求网络图片
    this.loaderStrategy = loaderStrategy;
    return this;
}
 

public Builder imageLoaderStrategy(BaseImageLoaderStrategy loaderStrategy) {//用来请求网络图片
    this.loaderStrategy = loaderStrategy;
    return this;
}