小编Muh*_*eem的帖子

我的应用程序目前正在使用房间数据库。我想迁移到使用 Sqlcipher 数据库。我已经fallbackToDestructiveMigration()启用但仍然抛出以下错误

java.lang.RuntimeException: Exception while computing database live data.
    at androidx.room.RoomTrackingLiveData$1.run(RoomTrackingLiveData.java:92)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
    at java.lang.Thread.run(Thread.java:764)
 Caused by: net.sqlcipher.database.SQLiteException: file is not a database: , while compiling: select count(*) from sqlite_master;
    at net.sqlcipher.database.SQLiteCompiledSql.native_compile(Native Method)
    at net.sqlcipher.database.SQLiteCompiledSql.compile(SQLiteCompiledSql.java:91)
    at net.sqlcipher.database.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:64)
    at net.sqlcipher.database.SQLiteProgram.<init>(SQLiteProgram.java:91)
    at net.sqlcipher.database.SQLiteQuery.<init>(SQLiteQuery.java:48)
    at net.sqlcipher.database.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:60)
    at net.sqlcipher.database.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:2016)
    at net.sqlcipher.database.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1902)
    at net.sqlcipher.database.SQLiteDatabase.keyDatabase(SQLiteDatabase.java:2673)
    at net.sqlcipher.database.SQLiteDatabase.openDatabaseInternal(SQLiteDatabase.java:2603)
    at net.sqlcipher.database.SQLiteDatabase.openDatabase(SQLiteDatabase.java:1247)
    at net.sqlcipher.database.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:1322)
    at net.sqlcipher.database.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:166)
    at net.sqlcipher.database.SupportHelper.getWritableDatabase(SupportHelper.java:83)
    at androidx.room.RoomDatabase.inTransaction(RoomDatabase.java:476)
    at androidx.room.RoomDatabase.assertNotSuspendingTransaction(RoomDatabase.java:281)
    at androidx.room.RoomDatabase.query(RoomDatabase.java:324)
    at androidx.room.util.DBUtil.query(DBUtil.java:83)
    at com.screenlocker.secure.room.MyDao_Impl$29.call(MyDao_Impl.java:1249)
    at com.screenlocker.secure.room.MyDao_Impl$29.call(MyDao_Impl.java:1246)
    at androidx.room.RoomTrackingLiveData$1.run(RoomTrackingLiveData.java:90)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162) …