createAsync
Create a new Handler whose posted messages and runnables are not subject to synchronization barriers such as display vsync.
Messages sent to an async handler are guaranteed to be ordered with respect to one another, but not necessarily with respect to messages from other Handlers.
Return
a new async Handler instance
Parameters
the Looper that the new Handler should be bound to
See also
Create a new Handler whose posted messages and runnables are not subject to synchronization barriers such as display vsync.
Messages sent to an async handler are guaranteed to be ordered with respect to one another, but not necessarily with respect to messages from other Handlers.
Return
a new async Handler instance
Parameters
the Looper that the new Handler should be bound to
callback to send events to
See also
to create an async Handler without custom message handling. Compatibility behavior:
- SDK 28 and above, this method matches platform behavior.
- SDK 27 and earlier, this method attempts to call the platform API via reflection, but may fail and return a synchronous handler instance.