出现此错误时,我正在编写 DatabaseHelper 代码。
public class DatabaseHelper extends SQLiteOpenHelper {
private static final String DB_NAME = "Items.db";
private static final String DB_TABLE = "Items_Table";
private static final String DB_TABLE1 = "Items_Table1";
private static final String NAME = "NAME";
private static final String ID = "ID";
private static final String ID1 = "ID1";
private static final String PLACE = "PLACE";
private static final String CREATE_TABLE = "CREATE TABLE " + DB_TABLE + " (" + ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + NAME
+ " TEXT " + ")";
private static final String CREATE_TABLE1 = "CREATE TABLE " + DB_TABLE1 + " (" + ID1 + " INTEGER PRIMARY KEY AUTOINCREMENT, "+
PLACE + " TEXT " + " , " + ID + " INTEGER REFERENCES " + DB_TABLE + ")";
public DatabaseHelper(Context context)
{
super(context,DB_NAME,null,1);
}
public void onConfigure(SQLiteDatabase db)
{
super.onConfigure(db);
db.setForeignKeyConstraintsEnabled(true);
}
public void onCreate(SQLiteDatabase db)
{
db.execSQL(CREATE_TABLE);
db.execSQL(CREATE_TABLE1);
}
我收到一个 Android Studio 错误:非法字符:'\u2028'。这是什么意思,我该如何纠正。