sqlite3 的增删查找

下面是添加数据页面

这也是一个类，来看.h文件

在主界面的.h文件

  SQLite3TestViewController.m
SQLite3TestViewController.h SQLite3TestViewController
 utableView;
 listData;
 searchBar;


- ()viewDidLoad{
    sqlService *sqlSer = [[sqlService alloc] init];
    listData = [sqlSer getTestList];先初始化那个专门用于存数据的类，才调用类获取数据的方法
void)viewDidAppear:(BOOL)animated{在这里写是为了等待时间缩短一点，数据如果很多的，在这里写可以让数据提前加载
    sqlService *sqlSer = [[sqlService alloc] init];
    listData = [sqlSer getTestList];
    [sqlSer release];
    [utableView reloadData];
}

- ()viewDidUnload {
    utableView = nil;
    listData = nil;
    searchBar =)dealloc {
    [utableView release];
    [listData release];
    [searchBar release];
    [super dealloc];
}


- (IBAction)insertValue{
    
    [searchBar resignFirstResponder];触发这个insertValue方法时隐藏键盘
    operateSqlViewController *operateController = [[operateSqlViewController alloc] init ];
    UINavigationController *theNavController = [[UINavigationController alloc]
                                                initWithRootViewController:operateController];这里如果不初始化一个UINavigationController类的对象来存放operateSqlViewController类的UIViewController，就不会有最上面的导航栏了。
    operateController.oprateType = 0;optrateType为0时为数据插入
    [operateController release];
    theNavController.navigationBar.tintColor = [UIColor blackColor];
    [self presentModalViewController:theNavController animated:YES];
    [theNavController release];
}

- (IBAction)updateValue{
    
    [searchBar resignFirstResponder];
    NSIndexPath *indexPath = [utableView  indexPathForSelectedRow];    
    if (indexPath == nil) {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:请选择要更新的项;
    }
    
    NSUInteger row = [indexPath row];
    sqlTestList *sqlList = [[sqlTestList alloc]init];
    sqlList = [listData objectAtIndex:(row - 1)];在这里面获取点击的行，因为table的第一行没显示数据，所以这里要减1。
        
    operateSqlViewController *operateController = [[UINavigationController alloc]
                                                initWithRootViewController:operateController];
    operateController.oprateType = 1;optrateType为1时为数据更新
    operateController.sqlValue = sqlList;
    theNavController.navigationBar.tintColor = [UIColor blackColor];
    [self presentModalViewController:theNavController animated:YES];
    [sqlList release];
    [operateController release];
    [theNavController release];
}

- (IBAction)getAllValue{
    
    [searchBar resignFirstResponder];
    
    sqlService *sqlSer = [sqlSer getTestList];
    [utableView reloadData];
    [sqlSer release];
    
}
- (IBAction)deleteValue{
    
    [searchBar resignFirstResponder];
    
    NSIndexPath *indexPath = [utableView  indexPathForSelectedRow];
    
    请选择要删除的项)];
    
    sqlService *sqlSer = [[sqlService alloc] init];
    
      ([sqlSer deleteTestList:sqlList]) {
         UIAlertView *alert = [[UIAlertView alloc] initWithTitle: 
                                                         message:删除数据成功" 
                                                        :self
                                               cancelButtonTitle: 
                                               otherButtonTitles:nil];
         [alert show];
         [alert release];
         
         删除成功后重新获取数据更新列表
         listData = [sqlSer getTestList];
         [utableView reloadData];

     }
     {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:删除数据失败;
    }
    
    [sqlList release];
    [sqlSer release];
}
- (IBAction)searchValue{
    
    if ([searchBar.text isEqualToString:]) {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:请输入要查询数据的ID {
        int idNum = [searchBar.text intValue];
        NSString *str = searchBar.text;
        sqlService *sqlSer = [[sqlService alloc] init];
        listData = [sqlSer searchTestList:str];

        if ([listData  count] == sorry,未查询到数据，请查看name是否有误 
                                                  otherButtonTitles:nil];
            [alert show];
            [alert release];
            ;
        }
        [searchBar resignFirstResponder];
        [utableView reloadData];
        [sqlSer release];
    
    }
}

#pragma mark -
#pragma mark Table View Data Source Methods
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
     Return the number of rows in the section.
    return [listData count] + 从第二行开始，第一行不显示数据
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    
    NSString *CustomIdentifier =  [NSString stringWithFormat:cell%dcell不重用
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CustomIdentifier];
    if (indexPath.row == )
    cell.selectionStyle = UITableViewCellSelectionStyleNone;
    if ( cell == nil ) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 
                                         reuseIdentifier:CustomIdentifier] autorelease];
        cell.backgroundColor = [UIColor clearColor];
            }
    if (indexPath.row > )
    {
        NSUInteger row = [indexPath row];
        sqlTestList *sqlList = [[sqlTestList alloc] init] ;
        
        if (listData != nil)
        sqlList = [listData objectAtIndex: (row - 读取数据的时候也要减一行，从第二行开始
        
        UILabel *nameLabel = [[UILabel alloc]initWithFrame:CGRectMake(0+40,128)">10,128)">70,128)">30)];
        UILabel *IDLabel = [[UILabel alloc]initWithFrame:CGRectMake(90+)];
        UILabel *valueLabel = [[UILabel alloc]initWithFrame:CGRectMake(180+)];
        nameLabel.text = sqlList.sqlname;
        IDLabel.text = sqlList.sqlText;
        valueLabel.text = [NSString stringWithFormat: 
        {
        for (int i = 0; i < 3; i ++) {
            UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(90 * i + )];
            NSArray *array = [NSArray arrayWithObjects:姓名",0)">ID电话 [array objectAtIndex:i];
            label.backgroundColor = [UIColor clearColor];
            [cell.contentView addSubview:label];
            [label release];
        }
    }
     cell;
}

- (NSIndexPath*)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    [searchBar resignFirstResponder];
    ) {
        return nil;让第一行不能点击
    }
    else
         indexPath;
}

@end

（编辑：李大同）

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