Observer
abstract class Observer
| kotlin.Any | |
| ↳ | androidx.room.InvalidationTracker.Observer |
An observer that can listen for changes in the database.
Summary
Public constructors |
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Observes the given list of tables and views. |
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Protected constructors |
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Observes the given list of tables and views. |
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Public methods |
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| abstract Unit |
onInvalidated(@NonNull tables: MutableSet<String!>)Called when one of the observed tables is invalidated in the database. |
Public constructors
<init>
Observer(@NonNull tables: Array<String!>)
Observes the given list of tables and views.
| Parameters | |
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tables |
Array<String!>: The list of tables or views to observe for changes. |
Protected constructors
<init>
protected Observer(@NonNull firstTable: String, vararg rest: String!)
Observes the given list of tables and views.
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firstTable |
String: The name of the table or view. |
rest |
String: More names of tables or views. |
Public methods
onInvalidated
abstract fun onInvalidated(@NonNull tables: MutableSet<String!>): Unit
Called when one of the observed tables is invalidated in the database.
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tables |
MutableSet<String!>: A set of invalidated tables. This is useful when the observer targets multiple tables and you want to know which table is invalidated. This will be names of underlying tables when you are observing views. |