Question

我已经在堆栈溢出中找到了与此问题相关的所有帖子，但无法获得任何解决方案。我在android中使用sqlite数据库存储数据，但每次我尝试它都会抛出一个表没有这样的列的错误。

//数据库类的代码

public class demo extends SQLiteOpenHelper {

    // All Static variables
    // Database Version
    private static final int DATABASE_VERSION = 1;

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

    // Contacts table name
    private static final String TABLE_ORDER = "orderTime";

    // Contacts Table Columns names
    private static final String KEY_ID = "id";
    private static final String PRODUCT_ID = "product_id";
    private static final String PRODUCT_NAME = "product_name";
    private static final String PRODUCT_DETAIL = "product_detail";
    private static final String PRODUCT_TYPE = "product_type";
    private static final String PRODUCT_PRICE = "product_price";


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

    @Override
    public void onCreate(SQLiteDatabase db) {
        String CREATE_ORDER_TABLE = "CREATE TABLE " + TABLE_ORDER + "("
                + KEY_ID + " INTEGER PRIMARY KEY,"
                + PRODUCT_NAME + " TEXT," + PRODUCT_DETAIL + " TEXT,"
                + PRODUCT_TYPE + " TEXT,"
                + PRODUCT_PRICE + " TEXT" + ")";
        db.execSQL(CREATE_ORDER_TABLE);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        db.execSQL("DROP TABLE IF EXISTS " + TABLE_ORDER);

        // Create tables again
        onCreate(db);
    }

    // Adding new order
    public void addOrder(ProductModel object) {
        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues values = new ContentValues();
        // Contact Name
        values.put(PRODUCT_NAME, object.getProductName()); // Contact Phone Number
        values.put(PRODUCT_DETAIL, object.getProductDetail());
        values.put(PRODUCT_TYPE, object.getProductType());
        values.put(PRODUCT_PRICE, object.getProductType());


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





     // Getting All order

       public List<ProductModel> getAllOrders() {
        List<ProductModel> orderList = new ArrayList<ProductModel>();
        // Select All Query
        String selectQuery = "SELECT  * FROM " + TABLE_ORDER;

        SQLiteDatabase db = this.getWritableDatabase();
        Cursor cursor = db.rawQuery(selectQuery, null);

        // looping through all rows and adding to list
        if (cursor.moveToFirst()) {
            do {
                ProductModel object = new ProductModel();
                object.setProductId(cursor.getString(0));

                object.setProductName((cursor.getString(1)));
                object.setProductDetail(cursor.getString(2));
                object.setProductType(cursor.getString(3));
                object.setProductPrice(Integer.parseInt(cursor.getString(4)));
                // Adding contact to list
                orderList.add(object);
            } while (cursor.moveToNext());
        }

        // return contact list
        return orderList;
    }

//在另一个类中调用数据库来添加数据

    JSONObject ob1 = jsonArray.getJSONObject(i);
                    {
                        String productId = ob1.getString("pkproductId");
                        String productName = ob1.getString("name");
                        String productType = ob1.getString("productType");
                        String productPrice = ob1.getString("price");
                        String productDetails = ob1.getString("details");


                        Log.d(TAG, "Inserting");
                        db.addOrder(new ProductModel(productName,productDetails,productType,Integer.parseInt(productPrice)));
 }



  // Product Model 


      public ProductModel( String productName, String productDetail, String productType, int productPrice) {
    this.productId = productId;
    this.productName = productName;
    this.productDetail = productDetail;
    this.productPrice = productPrice;
    this.productType = productType;
}

Answer 1

一步一步尝试

1）尝试更改DATABASE_VERSION = 1;到2：然后重新安装

2）在ProductModel中使用String productPrice并从Integer.parseInt(中删除db.addOrder。因为您的数据库具有TEXT数据类型

3）改变这一行

values.put(PRODUCT_TYPE, object.getProductType());
values.put(PRODUCT_PRICE, object.getProductPrice());

希望它对你有所帮助。如果这没有帮助随意提出问题

android.database.sqlite.SQLiteException：table orderTime没有名为product_price

1 个答案: