第一个讲解网页的内容程序员
研究了几天的数据库,终于把它给搞出来了。Sqlite是ios上最经常使用的数据库之一,你们仍是有必要了解一下的。这是仿照网上的一个例子作的,有些部分写的很差,我稍做了修改,以讲解为主,主要让你们可以明白如何修改,明白原理,达到触类旁通的目的。sql
先来看看效果图数据库
先来看看数据库方法类,将各个操做都封装在一个类里面,达到代码重用的目的,这是程序员都应该努力去实现的目标,这样在下一次用到一样的方法和类的时候,就能够直接使用封装好的类,能够节约大量的时间。数组
先来看看.h文件函数
#import <Foundation/Foundation.h>#import <sqlite3.h>#define kFilename @"testdb.db"@class sqlTestList;@interface sqlService : NSObject { sqlite3 *_database; } @property (nonatomic) sqlite3 *_database;-(BOOL) createTestList:(sqlite3 *)db;//建立数据库-(BOOL) insertTestList:(sqlTestList *)insertList;//插入数据 -(BOOL) updateTestList:(sqlTestList *)updateList;//更新数据-(NSMutableArray*)getTestList;//获取所有数据- (BOOL) deleteTestList:(sqlTestList *)deletList;//删除数据:- (NSMutableArray*)searchTestList:(NSString*)searchString;//查询数据库,searchID为要查询数据的ID,返回数据为查询到的数据@end@interface sqlTestList : NSObject//从新定义了一个类,专门用于存储数据{ int sqlID; NSString *sqlText; NSString *sqlname; } @property (nonatomic) int sqlID; @property (nonatomic, retain) NSString *sqlText; @property (nonatomic, retain) NSString *sqlname;@end
再来看看.m文件atom
//// sqlService.m// SQLite3Test//// Created by fengxiao on 11-11-28.// Copyright 2011 __MyCompanyName__. All rights reserved.//#import "sqlService.h"@implementation sqlService@synthesize _database;- (id)init { return self; }- (void)dealloc { [super dealloc]; }//获取document目录并返回数据库目录- (NSString *)dataFilePath{ NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSLog(@"=======%@",documentsDirectory); return [documentsDirectory stringByAppendingPathComponent:@"data.db"];//这里很神奇,能够定义成任何类型的文件,也能够不定义成.db文件,任何格式都行,定义成.sb文件都行,达到了很好的数据隐秘性 }//建立,打开数据库- (BOOL)openDB { //获取数据库路径 NSString *path = [self dataFilePath]; //文件管理器 NSFileManager *fileManager = [NSFileManager defaultManager]; //判断数据库是否存在 BOOL find = [fileManager fileExistsAtPath:path]; //若是数据库存在,则用sqlite3_open直接打开(不要担忧,若是数据库不存在sqlite3_open会自动建立) if (find) { NSLog(@"Database file have already existed."); //打开数据库,这里的[path UTF8String]是将NSString转换为C字符串,由于SQLite3是采用可移植的C(而不是 //Objective-C)编写的,它不知道什么是NSString. if(sqlite3_open([path UTF8String], &_database) != SQLITE_OK) { //若是打开数据库失败则关闭数据库 sqlite3_close(self._database); NSLog(@"Error: open database file."); return NO; } //建立一个新表 [self createTestList:self._database]; return YES; } //若是发现数据库不存在则利用sqlite3_open建立数据库(上面已经提到过),与上面相同,路径要转换为C字符串 if(sqlite3_open([path UTF8String], &_database) == SQLITE_OK) { //建立一个新表 [self createTestList:self._database]; return YES; } else { //若是建立并打开数据库失败则关闭数据库 sqlite3_close(self._database); NSLog(@"Error: open database file."); return NO; } return NO; }//建立表- (BOOL) createTestList:(sqlite3*)db { //这句是你们熟悉的SQL语句 char *sql = "create table if not exists testTable(ID INTEGER PRIMARY KEY AUTOINCREMENT, testID int,testValue text,testName text)";// testID是列名,int 是数据类型,testValue是列名,text是数据类型,是字符串类型 sqlite3_stmt *statement; //sqlite3_prepare_v2 接口把一条SQL语句解析到statement结构里去. 使用该接口访问数据库是当前比较好的的一种方法 NSInteger sqlReturn = sqlite3_prepare_v2(_database, sql, -1, &statement, nil); //第一个参数跟前面同样,是个sqlite3 * 类型变量, //第二个参数是一个 sql 语句。 //第三个参数我写的是-1,这个参数含义是前面 sql 语句的长度。若是小于0,sqlite会自动计算它的长度(把sql语句当成以\0结尾的字符串)。 //第四个参数是sqlite3_stmt 的指针的指针。解析之后的sql语句就放在这个结构里。 //第五个参数是错误信息提示,通常不用,为nil就能够了。 //若是这个函数执行成功(返回值是 SQLITE_OK 且 statement 不为NULL ),那么下面就能够开始插入二进制数据。 //若是SQL语句解析出错的话程序返回 if(sqlReturn != SQLITE_OK) { NSLog(@"Error: failed to prepare statement:create test table"); return NO; } //执行SQL语句 int success = sqlite3_step(statement); //释放sqlite3_stmt sqlite3_finalize(statement); //执行SQL语句失败 if ( success != SQLITE_DONE) { NSLog(@"Error: failed to dehydrate:create table test"); return NO; } NSLog(@"Create table 'testTable' successed."); return YES; }//插入数据-(BOOL) insertTestList:(sqlTestList *)insertList { //先判断数据库是否打开 if ([self openDB]) { sqlite3_stmt *statement; //这个 sql 语句特别之处在于 values 里面有个? 号。在sqlite3_prepare函数里,?号表示一个未定的值,它的值等下才插入。 static char *sql = "INSERT INTO testTable(testID, testValue,testName) VALUES(?, ?, ?)"; int success2 = sqlite3_prepare_v2(_database, sql, -1, &statement, NULL); if (success2 != SQLITE_OK) { NSLog(@"Error: failed to insert:testTable"); sqlite3_close(_database); return NO; } //这里的数字1,2,3表明上面的第几个问号,这里将三个值绑定到三个绑定变量 sqlite3_bind_int(statement, 1, insertList.sqlID); sqlite3_bind_text(statement, 2, [insertList.sqlText UTF8String], -1, SQLITE_TRANSIENT); sqlite3_bind_text(statement, 3, [insertList.sqlname UTF8String], -1, SQLITE_TRANSIENT); //执行插入语句 success2 = sqlite3_step(statement); //释放statement sqlite3_finalize(statement); //若是插入失败 if (success2 == SQLITE_ERROR) { NSLog(@"Error: failed to insert into the database with message."); //关闭数据库 sqlite3_close(_database); return NO; } //关闭数据库 sqlite3_close(_database); return YES; } return NO; }//获取数据- (NSMutableArray*)getTestList{ NSMutableArray *array = [NSMutableArray arrayWithCapacity:10]; //判断数据库是否打开 if ([self openDB]) { sqlite3_stmt *statement = nil; //sql语句 char *sql = "SELECT testID, testValue ,testName FROM testTable";//从testTable这个表中获取 testID, testValue ,testName,若获取所有的话能够用*代替testID, testValue ,testName。 if (sqlite3_prepare_v2(_database, sql, -1, &statement, NULL) != SQLITE_OK) { NSLog(@"Error: failed to prepare statement with message:get testValue."); return NO; } else { //查询结果集中一条一条的遍历全部的记录,这里的数字对应的是列值,注意这里的列值,跟上面sqlite3_bind_text绑定的列值不同!必定要分开,否则会crash,只有这一处的列号不一样,注意! while (sqlite3_step(statement) == SQLITE_ROW) { sqlTestList* sqlList = [[sqlTestList alloc] init] ; sqlList.sqlID = sqlite3_column_int(statement,0); char* strText = (char*)sqlite3_column_text(statement, 1); sqlList.sqlText = [NSString stringWithUTF8String:strText]; char *strName = (char*)sqlite3_column_text(statement, 2); sqlList.sqlname = [NSString stringWithUTF8String:strName]; [array addObject:sqlList]; [sqlList release]; } } sqlite3_finalize(statement); sqlite3_close(_database); } return [array retain];//定义了自动释放的NSArray,这样不是个好办法,会形成内存泄露,建议你们定义局部的数组,再赋给属性变量。}//更新数据-(BOOL) updateTestList:(sqlTestList *)updateList{ if ([self openDB]) { sqlite3_stmt *statement;//这至关一个容器,放转化OK的sql语句 //组织SQL语句 char *sql = "update testTable set testValue = ? and testName = ? WHERE testID = ?"; //将SQL语句放入sqlite3_stmt中 int success = sqlite3_prepare_v2(_database, sql, -1, &statement, NULL); if (success != SQLITE_OK) { NSLog(@"Error: failed to update:testTable"); sqlite3_close(_database); return NO; } //这里的数字1,2,3表明第几个问号。这里只有1个问号,这是一个相对比较简单的数据库操做,真正的项目中会远远比这个复杂 //绑定text类型的数据库数据 sqlite3_bind_text(statement, 3, [updateList.sqlname UTF8String], -1, SQLITE_TRANSIENT); sqlite3_bind_text(statement, 2, [updateList.sqlText UTF8String], -1, SQLITE_TRANSIENT); sqlite3_bind_int(statement, 1, updateList.sqlID); //执行SQL语句。这里是更新数据库 success = sqlite3_step(statement); //释放statement sqlite3_finalize(statement); //若是执行失败 if (success == SQLITE_ERROR) { NSLog(@"Error: failed to update the database with message."); //关闭数据库 sqlite3_close(_database); return NO; } //执行成功后依然要关闭数据库 sqlite3_close(_database); return YES; } return NO; }//删除数据- (BOOL) deleteTestList:(sqlTestList *)deletList{ if ([self openDB]) { sqlite3_stmt *statement; //组织SQL语句 static char *sql = "delete from testTable where testID = ? and testValue = ? and testName = ?"; //将SQL语句放入sqlite3_stmt中 int success = sqlite3_prepare_v2(_database, sql, -1, &statement, NULL); if (success != SQLITE_OK) { NSLog(@"Error: failed to delete:testTable"); sqlite3_close(_database); return NO; } //这里的数字1,2,3表明第几个问号。这里只有1个问号,这是一个相对比较简单的数据库操做,真正的项目中会远远比这个复杂 sqlite3_bind_int(statement, 1, deletList.sqlID); sqlite3_bind_text(statement, 2, [deletList.sqlText UTF8String], -1, SQLITE_TRANSIENT); sqlite3_bind_text(statement, 3, [deletList.sqlname UTF8String], -1, SQLITE_TRANSIENT); //执行SQL语句。这里是更新数据库 success = sqlite3_step(statement); //释放statement sqlite3_finalize(statement); //若是执行失败 if (success == SQLITE_ERROR) { NSLog(@"Error: failed to delete the database with message."); //关闭数据库 sqlite3_close(_database); return NO; } //执行成功后依然要关闭数据库 sqlite3_close(_database); return YES; } return NO; }//查询数据- (NSMutableArray*)searchTestList:(NSString*)searchString{ NSMutableArray *array = [NSMutableArray arrayWithCapacity:10]; //判断数据库是否打开 if ([self openDB]) { sqlite3_stmt *statement = nil; //sql语句 NSString *querySQL = [NSString stringWithFormat:@"SELECT * from testTable where testName like \"%@\"",searchString]; const char *sql = [querySQL UTF8String];// char *sql = "SELECT * FROM testTable WHERE testName like ?";//这里用like代替=能够执行模糊查找,原来是"SELECT * FROM testTable WHERE testName = ?" if (sqlite3_prepare_v2(_database, sql, -1, &statement, NULL) != SQLITE_OK) { NSLog(@"Error: failed to prepare statement with message:search testValue."); return NO; } else { sqlTestList *searchList = [[sqlTestList alloc]init];// sqlite3_bind_int(statement, 1, searchID); sqlite3_bind_text(statement, 3, [searchString UTF8String], -1, SQLITE_TRANSIENT); //查询结果集中一条一条的遍历全部的记录,这里的数字对应的是列值。 while (sqlite3_step(statement) == SQLITE_ROW) { sqlTestList* sqlList = [[sqlTestList alloc] init] ; sqlList.sqlID = sqlite3_column_int(statement,1); char* strText = (char*)sqlite3_column_text(statement, 2); sqlList.sqlText = [NSString stringWithUTF8String:strText]; char *strName = (char*)sqlite3_column_text(statement, 3); sqlList.sqlname = [NSString stringWithUTF8String:strName]; [array addObject:sqlList]; [sqlList release]; } [searchList release]; } sqlite3_finalize(statement); sqlite3_close(_database); } return [array retain]; }@end@implementation sqlTestList//刚才.h文件里定义的类在这实现@synthesize sqlID;@synthesize sqlText;@synthesize sqlname;-(id) init { sqlID = 0; sqlText = @""; sqlname = @""; return self; };-(void) dealloc { if ((sqlText != nil) && (sqlname != nil)) { [sqlText release]; [sqlname release]; } [super dealloc]; }@end
这就是封装好的类,能够重用哦!spa
下面是添加数据页面.net
这也是一个类,来看.h文件指针
#import <UIKit/UIKit.h>#import "sqlService.h"@interface operateSqlViewController : UIViewController { UITextField *idValue; UITextField *textValue; UITextField *textName; int oprateType;//区分数据插入与更新 sqlTestList *sqlValue; } @property (nonatomic, retain) IBOutlet UITextField *idValue; @property (nonatomic, retain) IBOutlet UITextField *textValue; @property (nonatomic, retain) IBOutlet UITextField *textName; @property (nonatomic, retain) sqlTestList *sqlValue; @property (nonatomic) int oprateType;@end
再来看看.m文件
#import "operateSqlViewController.h"@implementation operateSqlViewController@synthesize idValue;@synthesize textValue;@synthesize oprateType;@synthesize sqlValue;@synthesize textName;- (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc. that aren't in use.}- (void)viewDidLoad{ UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:@"返回" style:UIBarButtonItemStyleBordered target:self action:@selector(dismiss:)]; UIBarButtonItem *saveButton = [[UIBarButtonItem alloc] initWithTitle:@"保存" style:UIBarButtonItemStyleBordered target:self action:@selector(saveValue:)]; [[self navigationItem] setLeftBarButtonItem:backButton]; [[self navigationItem] setRightBarButtonItem:saveButton]; [backButton release]; [saveButton release]; if (oprateType == 0) { [self.navigationItem setTitle:@"数据插入"]; } else if(oprateType == 1){ [self.navigationItem setTitle:@"数据更新"]; idValue.text = [NSString stringWithFormat:@"%d", sqlValue.sqlID]; textValue.text = sqlValue.sqlText; textName.text = sqlValue.sqlname; } }- (void)viewDidUnload { idValue = nil; textValue = nil; textName = nil; sqlValue = nil; [super viewDidUnload]; // Release any retained subviews of the main view. // e.g. self.myOutlet = nil;}- (void)dealloc { [idValue release]; [textValue release]; [sqlValue release]; [textName release]; [super dealloc]; }- (void)dismiss:(id)sender{ [[self parentViewController] dismissModalViewControllerAnimated:YES]; }- (void)saveValue:(id)sender{ if (idValue.text.length == 0) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"请输入ID" delegate:self cancelButtonTitle:@"好" otherButtonTitles:nil]; [alert show]; [alert release]; return; } if (textValue.text.length == 0) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"请输入电话" delegate:self cancelButtonTitle:@"好" otherButtonTitles:nil]; [alert show]; [alert release]; return; } if (textName.text.length == 0) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"请输入姓名" delegate:self cancelButtonTitle:@"好" otherButtonTitles:nil]; [alert show]; [alert release]; return; } //初始化数据库 sqlService *sqlSer = [[sqlService alloc] init]; //数据库插入 if (oprateType == 0) { sqlTestList *sqlInsert = [[sqlTestList alloc]init]; sqlInsert.sqlID = [idValue.text intValue]; sqlInsert.sqlText = textValue.text; sqlInsert.sqlname = textName.text; //调用封装好的数据库插入函数 if ([sqlSer insertTestList:sqlInsert]) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"插入数据成功" delegate:self cancelButtonTitle:@"好" otherButtonTitles:nil]; [alert show]; [alert release]; } else { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"插入数据失败" delegate:self cancelButtonTitle:@"好" otherButtonTitles:nil]; [alert show]; [alert release]; } [sqlInsert release]; } //数据库更新 if(oprateType == 1){ sqlTestList *newValue = [[sqlTestList alloc]init]; newValue.sqlID = [idValue.text intValue]; newValue.sqlText = textValue.text; newValue.sqlname = textName.text; //调用封装好的更新数据库函数 if ([sqlSer updateTestList:newValue]) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"更新数据成功" delegate:self cancelButtonTitle:@"好" otherButtonTitles:nil]; [alert show]; [alert release]; } else { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"更新数据失败" delegate:self cancelButtonTitle:@"好" otherButtonTitles:nil]; [alert show]; [alert release]; } [newValue release]; } }@end
代码写的有些啰嗦,不过不难容易看懂,很少解释了,要在xib文件中添加3个UITextField和ULabel,要记得连线。
在主界面的.h文件
#import <UIKit/UIKit.h>#import "sqlService.h"@interface SQLite3TestViewController : UIViewController<UITableViewDelegate,UITableViewDataSource> { UITableView *utableView; NSArray *listData; UISearchBar *searchBar;//搜索栏 } @property (nonatomic, retain) IBOutlet UITableView *utableView; @property (nonatomic, retain) IBOutlet UISearchBar *searchBar; @property (nonatomic, retain) NSArray *listData;- (IBAction)insertValue;- (IBAction)updateValue;- (IBAction)getAllValue;- (IBAction)deleteValue;- (IBAction)searchValue;@end
.m文件
//// SQLite3TestViewController.m// SQLite3Test//// Created by fengxiao on 11-11-28.// Copyright 2011 __MyCompanyName__. All rights reserved.//#import "SQLite3TestViewController.h"#import "operateSqlViewController.h"@implementation SQLite3TestViewController@synthesize utableView;@synthesize listData;@synthesize searchBar;- (void)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,数据若是不少的,在这里写可让数据提早加载 sqlService *sqlSer = [[sqlService alloc] init]; listData = [sqlSer getTestList]; [sqlSer release]; [utableView reloadData]; }- (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use.}- (void)viewDidUnload { utableView = nil; listData = nil; searchBar = nil; [super viewDidUnload]; // Release any retained subviews of the main view. // e.g. self.myOutlet = nil;}- (void)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];//这里若是不初始化一个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:@"提示" message:@"请选择要更新的项" delegate:self cancelButtonTitle:@"好" otherButtonTitles:nil]; [alert show]; [alert release]; return; } NSUInteger row = [indexPath row]; sqlTestList *sqlList = [[sqlTestList alloc]init]; sqlList = [listData objectAtIndex:(row - 1)];//在这里面获取点击的行,由于table的第一行没显示数据,因此这里要减1。 operateSqlViewController *operateController = [[operateSqlViewController alloc] init ]; UINavigationController *theNavController = [[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 = [[sqlService alloc] init]; listData = [sqlSer getTestList]; [utableView reloadData]; [sqlSer release]; }- (IBAction)deleteValue{ [searchBar resignFirstResponder]; NSIndexPath *indexPath = [utableView indexPathForSelectedRow]; if (indexPath == nil) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"请选择要删除的项" delegate:self cancelButtonTitle:@"好" otherButtonTitles:nil]; [alert show]; [alert release]; return; } NSUInteger row = [indexPath row]; sqlTestList *sqlList = [[sqlTestList alloc]init]; sqlList = [listData objectAtIndex:(row - 1)]; sqlService *sqlSer = [[sqlService alloc] init]; if ([sqlSer deleteTestList:sqlList]) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"删除数据成功" delegate:self cancelButtonTitle:@"好" otherButtonTitles:nil]; [alert show]; [alert release]; //删除成功后从新获取数据更新列表 listData = [sqlSer getTestList]; [utableView reloadData]; } else { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"删除数据失败" delegate:self cancelButtonTitle:@"好" otherButtonTitles:nil]; [alert show]; [alert release]; return; } [sqlList release]; [sqlSer release]; }- (IBAction)searchValue{ if ([searchBar.text isEqualToString:@""]) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"请输入要查询数据的ID" delegate:self cancelButtonTitle:@"好" otherButtonTitles:nil]; [alert show]; [alert release]; return; } else {// int idNum = [searchBar.text intValue]; NSString *str = searchBar.text; sqlService *sqlSer = [[sqlService alloc] init]; listData = [sqlSer searchTestList:str]; if ([listData count] == 0) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"sorry,未查询到数据,请查看name是否有误" delegate:self cancelButtonTitle:@"好" otherButtonTitles:nil]; [alert show]; [alert release]; return; } [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] + 1;//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%d",indexPath.row]; //cell不重用 UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CustomIdentifier]; if (indexPath.row == 0) cell.selectionStyle = UITableViewCellSelectionStyleNone; if ( cell == nil ) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CustomIdentifier] autorelease]; cell.backgroundColor = [UIColor clearColor]; } if (indexPath.row > 0) { NSUInteger row = [indexPath row]; sqlTestList *sqlList = [[sqlTestList alloc] init] ; if (listData != nil) sqlList = [listData objectAtIndex: (row - 1)];//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, 10, 70, 30)]; UILabel *IDLabel = [[UILabel alloc]initWithFrame:CGRectMake(90+40, 10, 70, 30)]; UILabel *valueLabel = [[UILabel alloc]initWithFrame:CGRectMake(180+40, 10, 70, 30)]; nameLabel.text = sqlList.sqlname; IDLabel.text = sqlList.sqlText; valueLabel.text = [NSString stringWithFormat:@"%d",sqlList.sqlID]; [cell.contentView addSubview:nameLabel]; [cell.contentView addSubview:IDLabel]; [cell.contentView addSubview:valueLabel]; [nameLabel release]; [IDLabel release]; [valueLabel release]; } else { for (int i = 0; i < 3; i ++) { UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(90 * i + 40, 10, 70 , 30)]; NSArray *array = [NSArray arrayWithObjects:@"姓名",@"ID",@"电话", nil]; label.text = [array objectAtIndex:i]; label.backgroundColor = [UIColor clearColor]; [cell.contentView addSubview:label]; [label release]; } } return cell; }- (NSIndexPath*)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath { [searchBar resignFirstResponder]; if (indexPath.row == 0) { return nil;//让第一行不能点击 } else return indexPath; }@end