Does anyone by coincidence know how I can empty the cache memory of the iOS app that I am developing, in the moment it goes to the background (applicationDidEnterBackground)? I have investigated about NSCache but I am still not able to understand how could I retrieve the cache to basically remove/free it?
Is this what you're talking about?
[[NSURLCache sharedURLCache] removeAllCachedResponses];
You can also modify the cache behavior of your requests to selectively cache responses. If you're using AFNetworking
by chance, you can use setCacheResponseBlock
. E.g. in one project I set it to return nil
for all large video and audio files. But allow it to cache smaller image files.
[streamingOperation setCacheResponseBlock:^NSCachedURLResponse *(NSURLConnection *connection, NSCachedURLResponse *cachedResponse) {
return nil; // Ensures we are not unecessarily caching asset data to Cache.db
}];