Question

在这个类中，我将声明此表的表和列，但

public static abstract class Wish_list_Table implements BaseColumns {
    public static final String TABLE_NAME = "WISH_LIST";
    public static final String COL_NAME = "NAME";
    public static final String COL_PHOTO = "PHOTO";
    public static final String COL_DATE = "DATE";
    public static final String COL_PRICE = "PRICE";
    public static final String COL_LATITUDE = "LATITUDE";
    public static final String COL_LONGITUDE = "LONGITUDE";
    public static final String COL_LOCATION = "LOCATION";
    public static final String COL_DESC = "DESC";

}

这是查询create table ...这是log cat content .....

java.lang.RuntimeException：无法获取提供者com.info.wishlist.WishListProvider：android.database.sqlite.SQLiteException：near“TABLEWISH_LIST”：语法错误（代码1）:,同时编译：CREATE TABLEWISH_LIST（_idINTEGER PRIMARYKEY ，NAMETEXT，DESCTEXT，LOCATIONREAL ，LATITUDEREAL，LONGITUDEREAL，PRICEINTEGER，DATEINTEGER，PHOTOBLOB）

public static final String CREATE_DB = "CREATE TABLE"
        + Wish_list_Table.TABLE_NAME + "(" + Wish_list_Table._ID
        + "INTEGER PRIMARY KEY," + Wish_list_Table.COL_NAME + "TEXT,"
        + Wish_list_Table.COL_DESC + "TEXT," + Wish_list_Table.COL_LOCATION
        + "REAL," + Wish_list_Table.COL_LATITUDE + "REAL,"
        + Wish_list_Table.COL_LONGITUDE + "REAL,"
        + Wish_list_Table.COL_PRICE + "INTEGER," + Wish_list_Table.COL_DATE
        + "INTEGER," + Wish_list_Table.COL_PHOTO + "BLOB)";

Answer 1

您需要在列名称和类型

之间添加空格

public static final String CREATE_DB = "CREATE TABLE "// note the space
+ Wish_list_Table.TABLE_NAME + "(" + Wish_list_Table._ID
    + " INTEGER PRIMARY KEY," + Wish_list_Table.COL_NAME + " TEXT,"
    + Wish_list_Table.COL_DESC + " TEXT," + Wish_list_Table.COL_LOCATION
    + " REAL," + Wish_list_Table.COL_LATITUDE + " REAL,"
    + Wish_list_Table.COL_LONGITUDE + " REAL,"
    + Wish_list_Table.COL_PRICE + " INTEGER," + Wish_list_Table.COL_DATE
    + " INTEGER," + Wish_list_Table.COL_PHOTO + " BLOB)";

Answer 2

我得到了解决方案......每个字段的开始和结束都需要空间。

public static final String CREATE_DB = " CREATE TABLE "
        + Wish_list_Table.TABLE_NAME + "(" + Wish_list_Table._ID
        + " INTEGER PRIMARY KEY, " + Wish_list_Table.COL_NAME + " TEXT, "
        + Wish_list_Table.COL_DESC + " TEXT, " + Wish_list_Table.COL_LOCATION
        + " REAL, " + Wish_list_Table.COL_LATITUDE + " REAL, "
        + Wish_list_Table.COL_LONGITUDE + " REAL, "
        + Wish_list_Table.COL_PRICE + " INTEGER, " + Wish_list_Table.COL_DATE
        + " INTEGER, " + Wish_list_Table.COL_PHOTO + " BLOB)";

android的create table中的错误

2 个答案: