Android 不能'；t在sqlite中使用外键创建表

如果运行时保持代码行

db.execSQL（createOrderTable），则我的应用程序无法运行

和

db.execSQL（createOrderDetail），它创建了两个带有外键的表，在应用程序运行正常时将它们删除

这是我在
onCreate（）
方法上所做的：

String createUserTable = "create table " + USER_TABLE +
            "(userID INTEGER PRIMARY KEY AUTOINCREMENT," +
            "userName TEXT NOT NULL," +
            "phoneNumber INTEGER);";
    String createProductTable = "create table " + PRODUCT_TABLE +
            "(productID INTEGER PRIMARY KEY AUTOINCREMENT," +
            "department TEXT,"+
            "name TEXT," +
            "price REAL," +
            "status NUMERIC);";
    String createOrderTable = "create table " + ORDER_TABLE +
            "(orderID INTEGER PRIMARY KEY AUTOINCREMENT," +
            "FOREIGN KEY(userID) REFERENCES User(userID)," +
            "FOREIGN KEY(productID) REFERENCES Product(productID));";
    String createOrderDetail = "create table " + ORDER_DETAIL_TABLE +
            "(FOREIGN KEY(orderID) REFERENCES Order(orderID)," +
            "customerName TEXT," +
            "address TEXT," +
            "totalPrice REAL," +
            "quantity INTEGER);";
    db.execSQL(createUserTable);
    db.execSQL(createProductTable);
    db.execSQL(createOrderTable);
    db.execSQL(createOrderDetail);

这是我为
onUpgrade（）准备的：

现在如何创建其他两个表？？有人能帮忙吗？谢谢你
 您没有在createOrderTable查询中创建列userId和productId，但尝试进行外键引用。首先创建列，然后引用它

例如：

您必须首先定义userID和productID列，然后在其上设置外键

String createOrderTable = "create table " + ORDER_TABLE +
        "(orderID INTEGER PRIMARY KEY AUTOINCREMENT," +
        " userID integer," +
        "FOREIGN KEY(userID) REFERENCES User(userID)," +
        "productID integer" 
        "FOREIGN KEY(productID) REFERENCES Product(productID));";

是否有错误消息？
ADBCommandRecjectedException获取设备emulator-5554的属性：设备脱机
我收到了此消息，但我不知道它是否与数据库关联。在创建订单表查询时，它仍然会收到语法错误。我尝试使用
db.execSQL（“PRAGMA foreign\u keys=ON；”）启用外键支持但没有结果
String createOrderTable = "create table " + ORDER_TABLE +
        "(orderID INTEGER PRIMARY KEY AUTOINCREMENT," +
        "userID INTEGER,"+
        "productID INTEGER,"+
        "FOREIGN KEY(userID) REFERENCES User(userID)," +
        "FOREIGN KEY(productID) REFERENCES Product(productID));";
String createOrderDetail = "create table " + ORDER_DETAIL_TABLE +
        "(orderID INTEGER,"+
        "customerName TEXT," +
        "address TEXT," +
        "totalPrice REAL," +
        "quantity INTEGER," +
        "FOREIGN KEY(orderID) REFERENCES Order(orderID));";

String createOrderTable = "create table " + ORDER_TABLE +
        "(orderID INTEGER PRIMARY KEY AUTOINCREMENT," +
        " userID integer," +
        "FOREIGN KEY(userID) REFERENCES User(userID)," +
        "productID integer" 
        "FOREIGN KEY(productID) REFERENCES Product(productID));";