java - E/SQLite日志: (1) table keyTable has no column named number

Question

我不断收到此错误:

"table keyTable has no column named number"

对 Android 来说还是个新手，所以不知道为什么会发生这种情况，有人能发现这个错误吗？

这是我的数据库类:

public class KeyDatabase extends SQLiteOpenHelper {
    private static final String database_name = "KeyDatabase.db";
    private static final int database_version = 1;

KeyDatabase (Context context){
    super(context,database_name,null,database_version);
}

@Override
public void onCreate (SQLiteDatabase db){
    db.execSQL("CREATE TABLE " + KeyTableClass.table_name
            + "(" + KeyTableClass.id + " INTEGER PRIMARY KEY AUTOINCREMENT, "
            + KeyTableClass.number + " TEXT, "
            + KeyTableClass.key + " TEXT);");
}

public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion){
    db.execSQL("DROP TABLE IF EXISTS " + KeyTableClass.table_name);
    onCreate(db);
}

public long InsertKey (String number, String key){
    ContentValues valuesToInsert = new ContentValues();

    valuesToInsert.put(KeyTableClass.number, number);
    valuesToInsert.put(KeyTableClass.key, key);

    SQLiteDatabase sd = getWritableDatabase();

    long result = sd.insert(KeyTableClass.table_name, KeyTableClass.number, valuesToInsert);

    return result;
}

这是我的表的类:

public class KeyTableClass {
//The name of the table
public static final String table_name = "keyTable";

//The columns of the table
public static String id = "id";
public static String number = "number";
public static String key = "key";
}

Answer 1

也许您已经编辑了数据库 onCreate 但没有让它重新运行？尝试卸载/安装应用程序，或将 database_version 更新为 =2。