相关疑难解决方法(0)

我们尝试sqlite_sequence使用以下代码进行更新.

WeNoteRoomDatabase weNoteRoomDatabase = WeNoteRoomDatabase.instance();
weNoteRoomDatabase.query(new SimpleSQLiteQuery("UPDATE sqlite_sequence SET seq = 0 WHERE name = 'attachment'"));

但是,它完全没有效果.我sqlite_sequence使用SQLite浏览器检查表内容.计数器未重置为0.

如果我们尝试在同一个SQLite文件上使用SQLite浏览器手动运行相同的查询,它就可以正常工作.

我们的房间数据库非常简单.

@Database(
    entities = {Attachment.class},
    version = 6
)
public abstract class WeNoteRoomDatabase extends RoomDatabase {
    private volatile static WeNoteRoomDatabase INSTANCE;

    private static final String NAME = "wenote";

    public abstract AttachmentDao attachmentDao();

    public static WeNoteRoomDatabase instance() {
        if (INSTANCE == null) {
            synchronized (WeNoteRoomDatabase.class) {
                if (INSTANCE == null) {
                    INSTANCE = Room.databaseBuilder(
                        WeNoteApplication.instance(),
                        WeNoteRoomDatabase.class,
                        NAME
                    )
                        .build(); …