@SuppressWarnings("unused")
public class GlideCache implements GlideModule {

    @Override
    public void applyOptions(Context context, GlideBuilder builder) {
        //设置图片的显示格式ARGB_8888(指图片大小为32bit)
        builder.setDecodeFormat(DecodeFormat.PREFER_ARGB_8888);
        //设置磁盘缓存目录（和创建的缓存目录相同）
        String downloadDirectoryPath = Constants.IMAGE_DIR + "glide";
        //设置缓存的大小为512M
        int cacheSize = 512 * 1024 * 1024;
        builder.setDiskCache(new DiskLruCacheFactory(downloadDirectoryPath, cacheSize));
    }

    @Override
    public void registerComponents(Context context, Glide glide) {
    }
}

<meta-data
	android:name="${applicationId}.util.GlideCache"
	android:value="GlideModule" />