addChangeListener
Adds a change listener for the changes that occur in the query results.
The changes will be delivered on the main thread for platforms that support it: Android, iOS, and macOS. Callbacks are on an arbitrary thread for the JVM, Linux, and Windows platform.
Return
An opaque listener token object for removing the listener.
Parameters
The listener to post changes.
Throws
on failure to create the query (e.g., database closed)
Adds a change listener for the changes that occur in the query results with a CoroutineContext that will be used to launch coroutines the listener will be called on. Coroutines will be launched in a CoroutineScope that is canceled when the listener is removed.
Return
An opaque listener token object for removing the listener.
Parameters
coroutine context in which the listener will run
The listener to post changes.
Throws
on failure to create the query (e.g., database closed)
Adds a change listener for the changes that occur in the query results with a CoroutineScope that will be used to launch coroutines the listener will be called on. The listener is removed when the scope is canceled.
Return
An opaque listener token object for removing the listener.
Parameters
coroutine scope in which the listener will run
The listener to post changes.
Throws
on failure to create the query (e.g., database closed)