我正在使用Android Room 1.0.0 for DB。在运行应用程序时，我得到以下错误。
java.lang.IllegalStateException: attempt to re-open an already-closed object: SQLiteDatabase: /data/user/0/com.abc.mypkg/databases/myapp
at android.database.sqlite.SQLiteClosable.acquireReference(SQLiteClosable.java:55)
at android.database.sqlite.SQLiteDatabase.executeSql(SQLiteDatabase.java:2086)
at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:2032)
at android.arch.persistence.db.framework.FrameworkSQLiteDatabase.execSQL(FrameworkSQLiteDatabase.java:240)
at android.arch.persistence.room.RoomOpenHelper.createMasterTableIfNotExists(RoomOpenHelper.java:131)
at android.arch.persistence.room.RoomOpenHelper.checkIdentity(RoomOpenHelper.java:107)
at android.arch.persistence.room.RoomOpenHelper.onOpen(RoomOpenHelper.java:100)
at android.arch.persistence.db.framework.FrameworkSQLiteOpenHelper$OpenHelper.onOpen(FrameworkSQLiteOpenHelper.java:133)
at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:310)
at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:194)
at android.arch.persistence.db.framework.FrameworkSQLiteOpenHelper$OpenHelper.getWritableSupportDatabase(FrameworkSQLiteOpenHelper.java:93)
at android.arch.persistence.db.framework.FrameworkSQLiteOpenHelper.getWritableDatabase(FrameworkSQLiteOpenHelper.java:54)
at android.arch.persistence.room.RoomDatabase.query(RoomDatabase.java:193)
at com.jpmc.appstore.db.AppItemDao_Impl$11.compute(AppItemDao_Impl.java:415)
at com.jpmc.appstore.db.AppItemDao_Impl$11.compute(AppItemDao_Impl.java:401)
at android.arch.lifecycle.ComputableLiveData$2.run(ComputableLiveData.java:87)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at java.lang.Thread.run(Thread.java:764)
它并不总是，它来自10个中的一次或两次，但当它到来时，我需要卸载应用程序并安装。它甚至还应用于全新安装的应用程序。我也使用'fallbackToDestructiveMigration（）'但没有帮助。
想要了解它的根本原因。在生产中对我来说可能是危险的。
我使用的是Room 1.1.1-rc1，现在工作正常。