iPhone SQLite数据库没有更新

Question

我正在开发一个iPad应用程序，用户可以在其中添加用户数量及其详细信息。在这里，我实现了数据库，表的创建，将数据输入到表中并检索它。但我无法更新表格，

我在网上找到了一个充足的项目。通过使用它，它在我编辑页面时显示更新，但是当我重建应用程序时，它尚未更改或更新。我用Google搜索，但我找不到解决方案。

我的代码将文本发送到更新功能：

-(IBAction)btn3:(id)sender{
    AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];

    //Create a Coffee Object.
    Coffee *coffeeObj = [[Coffee alloc] initWithPrimaryKey:1];
    coffeeObj.fname = txt1.text;
    coffeeObj.lname = txt2.text;
    coffeeObj.address = txv1.text;
    /*NSDecimalNumber *temp = [[NSDecimalNumber alloc] initWithString:txt3.text];
     coffeeObj.phone = temp;*/
    coffeeObj.phone=txt3.text;
    coffeeObj.email = txt4.text;
    coffeeObj.notes = txv2.text;
    coffeeObj.images= img.image;
    coffeeObj.status=labels.text;
    //[temp release];
    coffeeObj.isDirty = YES;
    coffeeObj.isDetailViewHydrated = NO;

    //Add the object
    [appDelegate saveallData:coffeeObj];

}

Here is the coding for updating the table,

- (void) saveallData {

    if(isDirty) {

        if(updateStmt == nil) {
            const char *sql = "update ruah Set fname = ?, lname = ?, address = ?, phone = ?, email = ?, notes = ?, image = ?, status = ? Where ID = ?";
            if(sqlite3_prepare_v2(database, sql, -1, &updateStmt, NULL) != SQLITE_OK) 
                NSAssert1(0, @"Error while creating update statement. '%s'", sqlite3_errmsg(database));
        }

        sqlite3_bind_text(addStmt, 1, [fname UTF8String], -1, SQLITE_TRANSIENT);
        sqlite3_bind_text(addStmt, 2, [lname UTF8String], -1, SQLITE_TRANSIENT);
        sqlite3_bind_text(addStmt, 3, [address UTF8String], -1, SQLITE_TRANSIENT);
        sqlite3_bind_text(addStmt, 4, [phone UTF8String], -1, SQLITE_TRANSIENT); 
        sqlite3_bind_text(addStmt, 5, [email UTF8String], -1, SQLITE_TRANSIENT);
        sqlite3_bind_text(addStmt, 6, [notes UTF8String], -1, SQLITE_TRANSIENT);
        NSData *imgData = UIImagePNGRepresentation(self.images);
        sqlite3_bind_blob(addStmt, 7, [imgData bytes], [imgData length], SQLITE_TRANSIENT);
        sqlite3_bind_text(addStmt, 8, [status UTF8String], -1, SQLITE_TRANSIENT);

        /*
        int returnValue = -1;
        if(self.images != nil)
            returnValue = sqlite3_bind_blob(updateStmt, 3, [imgData bytes], [imgData length], NULL);
        else
            returnValue = sqlite3_bind_blob(updateStmt, 3, nil, -1, NULL);*/

        if(SQLITE_DONE != sqlite3_step(updateStmt))
            NSAssert1(0, @"Error while updating. '%s'", sqlite3_errmsg(database));

        sqlite3_reset(updateStmt);

        isDirty = NO;
    }

    //Reclaim all memory here.

    fname = nil;

    price = nil;

    isDetailViewHydrated = YES;
}