在SQLite中创建多个表时遇到的问题

Question

我正在使用下面的代码在数据库中创建多个表格。但是，我不明白为什么会出现这个问题。

private static final String TABLE_SMSFilter = "SMSFilter";


public void onCreate(SQLiteDatabase db)
    {
        Log.d("Test", "Control is in Oncreate()");
        String CREATE_SMSSSCHEDULE_TABLE = "CREATE TABLE " + TABLE_SMSSchedule
                + "(" + KEY_ID + " INTEGER PRIMARY KEY autoincrement,"
                + KEY_NUMBER + " TEXT)";

        String CREATE_PROFILE_SCHEDULE_TABLE = "CREATE TABLE "
                + TABLE_ProfileSchedule + "(" + ProfileSchedule_ID
                + " INTEGER PRIMARY KEY autoincrement,"
                + ProfileSchedule_NUMBER + " TEXT, "
                + ProfileSchedule_ProfileMode + " TEXT,"
                + ProfileSchedule_CalendarID + "INTEGER)";

        String CREATE_SMS_FILTER_TABLE = "CREATE TABLE " + TABLE_SMSFilter
                + "(" + SMSFilter_ID + " INTEGER PRIMARY KEY autoincrement,"
                + SMSFilter_NUMBER + " TEXT)";

        db.execSQL(CREATE_SMSSSCHEDULE_TABLE);
        db.execSQL(CREATE_PROFILE_SCHEDULE_TABLE);
        db.execSQL(CREATE_SMS_FILTER_TABLE);
    }

    // Upgrading database
    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)
    {
        // Drop older table if existed
        db.execSQL("DROP TABLE IF EXISTS " + TABLE_SMSSchedule);
        db.execSQL("DROP TABLE IF EXISTS " + TABLE_ProfileSchedule);

        db.execSQL("DROP TABLE IF EXISTS " + TABLE_SMSFilter);

        // Create tables again
        onCreate(db);
    }

这是插入函数

public void addSMSFilter(SMSFilter filterVariable)
    {

        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues values = new ContentValues();
        values.put(SMSFilter_NUMBER, filterVariable.getPhoneNumber()); // Contact
                                                                        // Name
        // values.put(KEY_PH_NO, contact.getPhoneNumber()); // Contact Phone

        Log.d("test", "inserting" + filterVariable.getPhoneNumber());
        // Inserting Row
        db.insert(TABLE_SMSFilter, null, values);

        db.close(); // Closing database connection
    }

现在在我的主要活动中，我使用了这段代码来插入到这个表中

DatabaseHandler db = new DatabaseHandler(this);

        SMSFilter sms = new SMSFilter("1234556");
        db.addSMSFilter(sms);

但它给了我一个错误，说找不到表"SMSFILTER"。

日志结果在这里

11-25 22:52:22.643: I/Database(12209): sqlite returned: error code = 1, msg = no such table: SMSFilter
11-25 22:52:22.643: E/Database(12209): Error inserting PhoneNo=1234556
11-25 22:52:22.643: E/Database(12209): android.database.sqlite.SQLiteException: no such table: SMSFilter: , while compiling: INSERT INTO SMSFilter(PhoneNo) VALUES(?);
11-25 22:52:22.643: E/Database(12209):  at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method)
11-25 22:52:22.643: E/Database(12209):  at android.database.sqlite.SQLiteCompiledSql.compile(SQLiteCompiledSql.java:91)
11-25 22:52:22.643: E/Database(12209):  at android.database.sqlite.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:64)
11-25 22:52:22.643: E/Database(12209):  at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:80)
11-25 22:52:22.643: E/Database(12209):  at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:36)
11-25 22:52:22.643: E/Database(12209):  at android.database.sqlite.SQLiteDatabase.compileStatement(SQLiteDatabase.java:1212)
11-25 22:52:22.643: E/Database(12209):  at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1610)
11-25 22:52:22.643: E/Database(12209):  at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1484)
11-25 22:52:22.643: E/Database(12209):  at com.scheduler.database.DatabaseHandler.addSMSFilter(DatabaseHandler.java:327)
11-25 22:52:22.643: E/Database(12209):  at com.schedule.test.TestActivity.onCreate(TestActivity.java:31)
11-25 22:52:22.643: E/Database(12209):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1069)
11-25 22:52:22.643: E/Database(12209):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2751)
11-25 22:52:22.643: E/Database(12209):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2803)
11-25 22:52:22.643: E/Database(12209):  at android.app.ActivityThread.access$2300(ActivityThread.java:135)
11-25 22:52:22.643: E/Database(12209):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2136)
11-25 22:52:22.643: E/Database(12209):  at android.os.Handler.dispatchMessage(Handler.java:99)
11-25 22:52:22.643: E/Database(12209):  at android.os.Looper.loop(Looper.java:144)
11-25 22:52:22.643: E/Database(12209):  at android.app.ActivityThread.main(ActivityThread.java:4937)
11-25 22:52:22.643: E/Database(12209):  at java.lang.reflect.Method.invokeNative(Native Method)
11-25 22:52:22.643: E/Database(12209):  at java.lang.reflect.Method.invoke(Method.java:521)
11-25 22:52:22.643: E/Database(12209):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
11-25 22:52:22.643: E/Database(12209):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
11-25 22:52:22.643: E/Database(12209):  at dalvik.system.NativeStart.main(Native Method)

- Ahmad Abbasi

---

整个LogCat显示了什么？ - Ahmad

你尝试卸载应用程序然后重新安装它了吗？ - user

@Luksprog 是的，它可以工作。如果您能告诉我问题出在哪里，那就太好了？ - Ahmad Abbasi

onCreate()在数据库创建时第一次调用。当DB_VERSION更改时，将调用onUpgrade()。因此，在您的情况下，您已经拥有了一个具有相同版本的现有Db，即使在添加其他表之后也没有进行任何修改（我假设您是在先前已经有一个表之后执行这些操作）。 - varevarao

Answer 1

当更改数据库版本号时，将调用onUpgrade。 在更新表时，您需要递增数据库版本号，在onCreate方法中指定新的表创建查询，并将ALTER TABLE放入onUpgrade方法中以更新先前版本的表。当Android检测到数据库版本不匹配时，它会自动调用onUpgrade方法。

- Yaqub Ahmad

Answer 2

请注意，onCreate仅在创建数据库物理文件的第一次调用。似乎没有调用onCreate方法，因为数据库已经存在于SD卡的某个位置。因此，表SMSFilter未被创建。您需要将onCreate中的代码复制到onUpgrade方法中（在删除表命令之后）。此外，要触发onUpgrade，必须增加数据库版本。

- saeed khalafinejad

Answer 3

String CREATE_PROFILE_SCHEDULE_TABLE = "CREATE TABLE "
            + TABLE_ProfileSchedule + "(" + ProfileSchedule_ID
            + " INTEGER PRIMARY KEY autoincrement,"
            + ProfileSchedule_NUMBER + " TEXT, "
            + ProfileSchedule_ProfileMode + " TEXT,"
            + ProfileSchedule_CalendarID + "INTEGER)";

将此更新为

String CREATE_PROFILE_SCHEDULE_TABLE = "CREATE TABLE "
            + TABLE_ProfileSchedule + "(" + ProfileSchedule_ID
            + " INTEGER PRIMARY KEY autoincrement,"
            + ProfileSchedule_NUMBER + " TEXT, "
            + ProfileSchedule_ProfileMode + " TEXT,"
            + ProfileSchedule_CalendarID + " INTEGER)";

你的日程表创建代码有问题，最后一行整数和列名之间没有空格，导致出现问题。

- Rajnish Mishra