RoomDatabase.Callback
public
static
abstract
class
RoomDatabase.Callback
extends Object
| java.lang.Object | |
| ↳ | androidx.room.RoomDatabase.Callback |
Callback for RoomDatabase.
Summary
Public constructors | |
|---|---|
RoomDatabase.Callback()
|
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Public methods | |
|---|---|
void
|
onCreate(SupportSQLiteDatabase db)
Called when the database is created for the first time. |
void
|
onDestructiveMigration(SupportSQLiteDatabase db)
Called after the database was destructively migrated |
void
|
onOpen(SupportSQLiteDatabase db)
Called when the database has been opened. |
Inherited methods | |
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Public constructors
RoomDatabase.Callback
public RoomDatabase.Callback ()
Public methods
onCreate
public void onCreate (SupportSQLiteDatabase db)
Called when the database is created for the first time. This is called after all the tables are created.
| Parameters | |
|---|---|
db |
SupportSQLiteDatabase: The database.
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onDestructiveMigration
public void onDestructiveMigration (SupportSQLiteDatabase db)
Called after the database was destructively migrated
| Parameters | |
|---|---|
db |
SupportSQLiteDatabase: The database.
|
onOpen
public void onOpen (SupportSQLiteDatabase db)
Called when the database has been opened.
| Parameters | |
|---|---|
db |
SupportSQLiteDatabase: The database.
|