Room 和 SQLiteDatabaseCorruptException

Question

刚刚在我的游戏控制台中看到了一份报告：

android.database.sqlite.SQLiteDatabaseCorruptException: 
  at android.database.sqlite.SQLiteConnection.nativePrepareStatement (Native Method)
  at android.database.sqlite.SQLiteConnection.acquirePreparedStatement (SQLiteConnection.java:903)
  at android.database.sqlite.SQLiteConnection.executeForString (SQLiteConnection.java:648)
  at android.database.sqlite.SQLiteConnection.setJournalMode (SQLiteConnection.java:333)
  at android.database.sqlite.SQLiteConnection.setWalModeFromConfiguration (SQLiteConnection.java:298)
  at android.database.sqlite.SQLiteConnection.open (SQLiteConnection.java:217)
  at android.database.sqlite.SQLiteConnection.open (SQLiteConnection.java:195)
  at android.database.sqlite.SQLiteConnectionPool.openConnectionLocked (SQLiteConnectionPool.java:503)
  at android.database.sqlite.SQLiteConnectionPool.open (SQLiteConnectionPool.java:204)
  at android.database.sqlite.SQLiteConnectionPool.open (SQLiteConnectionPool.java:196)
  at android.database.sqlite.SQLiteDatabase.openInner (SQLiteDatabase.java:920)
  at android.database.sqlite.SQLiteDatabase.open (SQLiteDatabase.java:908)
  at android.database.sqlite.SQLiteDatabase.openDatabase (SQLiteDatabase.java:767)
  at android.database.sqlite.SQLiteDatabase.openDatabase (SQLiteDatabase.java:757)
  at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked (SQLiteOpenHelper.java:355)
  at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase (SQLiteOpenHelper.java:298)
  at android.arch.persistence.db.framework.FrameworkSQLiteOpenHelper$OpenHelper.getWritableSupportDatabase (FrameworkSQLiteOpenHelper.java:96)
  at android.arch.persistence.db.framework.FrameworkSQLiteOpenHelper.getWritableDatabase (FrameworkSQLiteOpenHelper.java:54)
  at android.arch.persistence.room.RoomDatabase.query (RoomDatabase.java:233)
  at org.walleth.data.transactions.TransactionDAO_Impl$8.compute (TransactionDAO_Impl.java:1228)
  at org.walleth.data.transactions.TransactionDAO_Impl$8.compute (TransactionDAO_Impl.java:1214)
  at android.arch.lifecycle.ComputableLiveData$2.run (ComputableLiveData.java:100)
  at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1167)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:641)
  at java.lang.Thread.run (Thread.java:764)

谁知道处理这些问题的好方法？尤其是在使用 LiveData 时，我还没有看到处理这个问题的好方法。还有什么是重现这个的好方法 - 那么我如何优雅地破坏数据库？

Answer 1

谁知道处理这些问题的好方法？

好吧，如果您的数据库已损坏，则它已损坏。除非您从头开始重新创建它，否则您可能无法修复它。但是如果你想在做任何事情之前检查它是否有效，只需参考这篇文章：Android: Check if a file is a valid SQLite database

编辑：好的，it seems it's possible to fix a SQLite database 但这实际上取决于它的损坏程度，因此您可能不会编写通用代码来修复它们。

还有什么是重现这个的好方法 - 那么我该如何破坏 数据库优雅吗？

您必须在有根手机上重现它，因为您将无法通过标准 SQLite 语句破坏数据库（它们专门用于防止这种情况发生）。

拿一个假手机（或模拟器），然后root它，然后访问这个文件：

//data/data/<Your-Application-Package-Name>/databases/<your-database-name>

你可以用任何编辑器打开它，然后把它弄乱（删除一堆行然后保存）。这可能会损坏文件，您将拥有SQLiteDatabaseCorruptException