Android: persistentDrawingCache usage instructions,

Android: persistentDrawingCache usage instructions,

Android: persistentDrawingCache)

Defines the persistence of the drawing cache. the drawing cache might be enabled by a ViewGroup for all its children in specific situations (for instance during a scrolling .) this property lets you persist the cache in memory after its initial usage. persisting the cache consumes more memory but may prevent frequent garbage collection is the cache is created over and over again. by default the persistence is set to scrolling.

Defines the cache persistence of a drawing. The drawing cache may be composed of a ViewGroup Enable all its sub-classes in a specific situation, for example, in a rolling process. This attribute can be reserved in the memory cache after being used for the first time. Sticking to the cache will consume more memory, but it may prevent frequent garbage collection by repeatedly creating cache. By default, continuous existence is set to scroll.

Must be one or more (separated by '|') of the following constant values.

The following values can be used in an Xml file:

Constant	Value	Description
none	0x0	The drawing cache is not persisted after use.
animation	0x1	The drawing cache is persisted after a layout animation.
scrolling	0x2	The drawing cache is persisted after a scroll.
all	0x3	The drawing cache is always persisted.