How To Clear Androids LRUCache

Question

In the API of Google Developer there is a trimToSize() Method, that I can't find / use. How do I clear or reduze the size of my LRU Cache ?

score 10 · Accepted Answer · answered Feb 17 '14 at 16:49

10

public final void evictAll ()

Added in API level 12

Clear the cache, calling entryRemoved(boolean, K, V, V) on each removed entry.

Use this method.

answered Feb 17 '14 at 16:49

Triode

Thanks a lot. Do you also know how I can remove the halfe of all older objects. I mean clear the cache to the halfe with older objects ? – mcfly soft Feb 17 '14 at 17:43
Try calling public final V remove (K key) method so that you can remove a particular entry. Try to call this based on the entry count – Triode Feb 17 '14 at 17:49
But I do not know the keys. – mcfly soft Feb 17 '14 at 18:03
how you are inserting items to LRUCache? – Triode Feb 17 '14 at 18:07
chaotics. depends on the users behaviour and I do not maintain a seperate list of keys. :-( – mcfly soft Feb 17 '14 at 18:10
If you not how you can remove it. Just keep a list of keys if you want to get it removed. – Triode Feb 17 '14 at 18:11
I guess i'll have to do that. Thanks ! – mcfly soft Feb 17 '14 at 18:57
use evictAll() method to remove all the elements – Sam Nov 05 '14 at 20:41
`snapshot()` might be of value to anyone looking at this. It returns an LRU ordered list of keys in cache. – j2abro Jun 28 '17 at 13:54
@j2abro Thank you, I will update the answer and would be helpful for others. – Triode Jun 28 '17 at 14:53

1 Answers1