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请问如何在不清除缓存的情况下，强制直接从网络加载图片呢 #6

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skindhu opened this issue Jun 1, 2016 · 1 comment

skindhu commented Jun 1, 2016

请问如何在不清除缓存的情况下，强制直接从网络加载图片呢

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desmond1121 commented Jun 14, 2016 •

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@huli1987 仅某个情况用时，你可以只清除指定url的缓存：

final ImageRequest request = ImageRequest.fromUri(Uri.parse("url"));
CacheKey cacheKey = DefaultCacheKeyFactory.getInstance().getEncodedCacheKey(request);
StagingArea.getInstance().remove(cacheKey);
Fresco.getImagePipelineFactory().getMainDiskStorageCache().remove(cacheKey);

你一定要达到这种目的的话，可以在ImageRequest设置最低缓存层级，禁止这次的请求获取缓存内容，但是它至少会检查内存缓存。

ImageRequest request = ImageRequestBuilder.newBuilderWithSource(Uri.parse("url"))
   .setLowestPermittedRequestLevel(ImageRequest.RequestLevel.BITMAP_MEMORY_CACHE)
   .build();

如果一定要全局这么搞，你可以在初始化的时候设置CacheKeyFactory给ImagePipelineConfig，让它每次返回不同的缓存key，就能达到你的目的了

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