java.lang.IllegalStateException：无法从CursorWindow读取第0行col -1

Question

执行getContact()方法

时出现此错误

java.lang.IllegalStateException: Couldn't read row 0, col -1 from CursorWindow

我是SQLite的新手，请帮助我。

这是ny代码：

public class DatabaseHandler extends SQLiteOpenHelper 
{
        // All Static variables
    // Database Version
    private static final int DATABASE_VERSION = 1;

    // Database Name
    private static final String DATABASE_NAME = "contactsManager";

    // Contacts table name
    private static final String TABLE_CONTACTS = "contacts";

    // Contacts Table Columns names
    final String KEY_EXP = "EXP";
    final String ID = "phone";
    final String KEY_NAME = "name";
    final String KEY_LIMIT = "limit";

    public DatabaseHandler(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

    // Creating Tables
    @Override
    public void onCreate(SQLiteDatabase db) {
        String CREATE_CONTACTS_TABLE = "CREATE TABLE " + TABLE_CONTACTS + "(" + ID + "TEXT,"  + KEY_LIMIT + " TEXT,"+ KEY_NAME + " TEXT PRIMARY KEY," + KEY_EXP + " TEXT);";

        db.execSQL(CREATE_CONTACTS_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_CONTACTS);

        // Create tables again
        onCreate(db);
    }

    // Adding new contact
    void addContact(Contact contact) {
        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues values = new ContentValues();
        values.put(KEY_NAME, contact.getName());
        values.put(KEY_EXP, contact.getEXP());
        //values.put(ID, contact.getID());
        values.put( KEY_LIMIT,contact.getLimit() );
        // Contact Name
        //values.put(KEY_PH_NO, contact.getPhoneNumber()); // Contact Phone

        // Inserting Row
        db.insert(TABLE_CONTACTS, null, values);
        db.close(); // Closing database connection
    }

}

访问getContact（）时出错：

    Contact getContact(String id1) {
        SQLiteDatabase db = this.getReadableDatabase();
        Cursor cursor = db.query(TABLE_CONTACTS, new String[] {KEY_EXP,KEY_LIMIT}, KEY_NAME + "=?",
                new String[] { id1 }, null, null, null, null);
        if (cursor != null)
            cursor.moveToFirst();
        Contact contact = new Contact();
        contact.setName(cursor.getString(cursor.getColumnIndex(KEY_NAME)));
        contact.setEXP(cursor.getString(cursor.getColumnIndex(KEY_EXP)));
        contact.setLimit(cursor.getString(cursor.getColumnIndex(KEY_LIMIT)));
        db.close();
        return contact;
    }
    public String[] getSome(String id1)
    {
        SQLiteDatabase db = this.getReadableDatabase();
        int x;
        String s1[]=new String[17];
        for(int y=0;y<17;y++)
        { x = Integer.parseInt(id1);
            x  = x+y;
            String s = Integer.toString(x);

            Cursor cursor = db.query(TABLE_CONTACTS, new String[] { KEY_NAME,
                            ID }, ID + "=?",
                    new String[] { s }, null, null, null, null);

            if (cursor != null)
                cursor.moveToFirst()  ;
            s1[y] =cursor.getString(0).toString();
            cursor.close();
        }

        db.close();
        return s1;

    }