Cache.Listener (ExoPlayer library)

All Known Subinterfaces:

CacheEvictor

All Known Implementing Classes:

CachedRegionTracker, LeastRecentlyUsedCacheEvictor, NoOpCacheEvictor

Enclosing interface:

Cache
```
public static interface Cache.Listener
```
Listener of Cache events.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onSpanAdded(Cache cache, CacheSpan span)`	Called when a `CacheSpan` is added to the cache.
`void`	`onSpanRemoved(Cache cache, CacheSpan span)`	Called when a `CacheSpan` is removed from the cache.
`void`	`onSpanTouched(Cache cache, CacheSpan oldSpan, CacheSpan newSpan)`	Called when an existing `CacheSpan` is touched, causing it to be replaced.

- Method Detail
  - onSpanAdded
```
void onSpanAdded(Cache cache,
                 CacheSpan span)
```
    Called when a CacheSpan is added to the cache.
    
    Parameters:
    
    cache - The source of the event.
    
    span - The added CacheSpan.
  - onSpanRemoved
```
void onSpanRemoved(Cache cache,
                   CacheSpan span)
```
    Called when a CacheSpan is removed from the cache.
    
    Parameters:
    
    cache - The source of the event.
    
    span - The removed CacheSpan.
  - onSpanTouched
```
void onSpanTouched(Cache cache,
                   CacheSpan oldSpan,
                   CacheSpan newSpan)
```
    Called when an existing CacheSpan is touched, causing it to be replaced. The new CacheSpan is guaranteed to represent the same data as the one it replaces, however CacheSpan.file and CacheSpan.lastTouchTimestamp may have changed.
    Note that for span replacement, onSpanAdded(Cache, CacheSpan) and onSpanRemoved(Cache, CacheSpan) are not called in addition to this method.
    
    Parameters:
    
    cache - The source of the event.
    
    oldSpan - The old CacheSpan, which has been removed from the cache.
    
    newSpan - The new CacheSpan, which has been added to the cache.