How to clean up all the cache image

[luojinghui]

in code, How to clean up all the cache image?

[abelaska]

That's a good point. Function to remove all cached images would be very useful.

[jayesbe]

Agreed. There should be a mechanism to remove the cached file. I think a static function for removing all cached images would work. Something like CacheableImage.clearCache();

For individual components I am thinking a property like 'clearCacheOnDestroy' as a boolean. Once set, on componentWillUnmount() it should check to see if the prop is set and if so remove it from the cache.

Thoughts ?

[luojinghui]

So, now only manually to delete the cache, and can not function to delete these pictures?

[wachunei]

I was looking at the source code and it actually has a method that deletes the cached file (_deleteFilePath, here it is in use).

This method argument is filePath, which is calculated here at line 52, and uses cachePath and cacheKeys as variables.

Both variables are assigned in _processSource method.

So what would I do in order to delete a specific image from the cache:

• Create another method to calculate cacheKey (since cachePath is essentially source's URI host). Of course use this method in _processSource.
• Create a static method, let's say: clearCachedFile which would take a string (the URI), calculate host and cacheKey, then creates filePath variable and finally call _deleteFilePath with this variable.

@jayesbe What do you think? If is there something I'm missing let me know.

If this is fine for you I'd happily create a PR with this.

[jayesbe]

@wachunei This makes sense to me. PR is definitely welcome.

[wachunei]

@jayesbe will look into this next days!