IOS用sqlite的原生代碼操做數據庫詳解 總和兩個網頁的講解
第一個講解網頁的內容程序員
研究了幾天的數據庫，終於把它給搞出來了。Sqlite是ios上最經常使用的數據庫之一，你們仍是有必要了解一下的。這是仿照網上的一個例子作的，有些部分寫的很差，我稍做了修改，以講解爲主，主要讓你們可以明白如何修改，明白原理，達到觸類旁通的目的。sql
先來看看效果圖數據庫
先來看看數據庫方法類，將各個操做都封裝在一個類裏面，達到代碼重用的目的，這是程序員都應該努力去實現的目標，這樣在下一次用到一樣的方法和類的時候，就能夠直接使用封裝好的類，能夠節約大量的時間。數組
先來看看.h文件函數
#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;//建立數據庫-(BOOL) insertTestList:(sqlTestList *)insertList;//插入數據 -(BOOL) updateTestList:(sqlTestList *)updateList;//更新數據-(NSMutableArray*)getTestList;//獲取所有數據- (BOOL) deleteTestList:(sqlTestList *)deletList;//刪除數據：- (NSMutableArray*)searchTestList:(NSString*)searchString;//查詢數據庫，searchID爲要查詢數據的ID，返回數據爲查詢到的數據@end@interface sqlTestList : NSObject//從新定義了一個類，專門用於存儲數據{ int sqlID;
NSString *sqlText;
NSString *sqlname;
}
@property (nonatomic) int sqlID;
@property (nonatomic, retain) NSString *sqlText;
@property (nonatomic, retain) NSString *sqlname;@end
再來看看.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];
}//獲取document目錄並返回數據庫目錄- (NSString *)dataFilePath{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSLog(@"=======%@",documentsDirectory); return [documentsDirectory stringByAppendingPathComponent:@"data.db"];//這裏很神奇，能夠定義成任何類型的文件，也能夠不定義成.db文件，任何格式都行，定義成.sb文件都行，達到了很好的數據隱祕性 }//建立，打開數據庫- (BOOL)openDB {
//獲取數據庫路徑
NSString *path = [self dataFilePath]; //文件管理器
NSFileManager *fileManager = [NSFileManager defaultManager]; //判斷數據庫是否存在
BOOL find = [fileManager fileExistsAtPath:path];
//若是數據庫存在，則用sqlite3_open直接打開（不要擔憂，若是數據庫不存在sqlite3_open會自動建立）
if (find) {
NSLog(@"Database file have already existed.");
//打開數據庫，這裏的[path UTF8String]是將NSString轉換爲C字符串，由於SQLite3是採用可移植的C(而不是 //Objective-C)編寫的，它不知道什麼是NSString.
if(sqlite3_open([path UTF8String], &_database) != SQLITE_OK) {
//若是打開數據庫失敗則關閉數據庫 sqlite3_close(self._database);
NSLog(@"Error: open database file."); return NO;
}
//建立一個新表 [self createTestList:self._database];
return YES;
} //若是發現數據庫不存在則利用sqlite3_open建立數據庫（上面已經提到過），與上面相同，路徑要轉換爲C字符串
if(sqlite3_open([path UTF8String], &_database) == SQLITE_OK) {
//建立一個新表 [self createTestList:self._database]; return YES;
} else { //若是建立並打開數據庫失敗則關閉數據庫 sqlite3_close(self._database);
NSLog(@"Error: open database file."); return NO;
} return NO;
}//建立表- (BOOL) createTestList:(sqlite3*)db {
//這句是你們熟悉的SQL語句
char *sql = "create table if not exists testTable(ID INTEGER PRIMARY KEY AUTOINCREMENT, testID int,testValue text,testName text)";// testID是列名，int 是數據類型，testValue是列名，text是數據類型，是字符串類型
sqlite3_stmt *statement; //sqlite3_prepare_v2 接口把一條SQL語句解析到statement結構裏去. 使用該接口訪問數據庫是當前比較好的的一種方法
NSInteger sqlReturn = sqlite3_prepare_v2(_database, sql, -1, &statement, nil); //第一個參數跟前面同樣，是個sqlite3 * 類型變量， //第二個參數是一個 sql 語句。 //第三個參數我寫的是-1，這個參數含義是前面 sql 語句的長度。若是小於0，sqlite會自動計算它的長度（把sql語句當成以\0結尾的字符串）。 //第四個參數是sqlite3_stmt 的指針的指針。解析之後的sql語句就放在這個結構裏。 //第五個參數是錯誤信息提示，通常不用,爲nil就能夠了。 //若是這個函數執行成功（返回值是 SQLITE_OK 且 statement 不爲NULL ），那麼下面就能夠開始插入二進制數據。
//若是SQL語句解析出錯的話程序返回
if(sqlReturn != SQLITE_OK) {
NSLog(@"Error: failed to prepare statement:create test table"); return NO;
}
//執行SQL語句
int success = sqlite3_step(statement); //釋放sqlite3_stmt sqlite3_finalize(statement);
//執行SQL語句失敗
if ( success != SQLITE_DONE) {
NSLog(@"Error: failed to dehydrate:create table test"); return NO;
}
NSLog(@"Create table 'testTable' successed."); return YES;
}//插入數據-(BOOL) insertTestList:(sqlTestList *)insertList {
//先判斷數據庫是否打開
if ([self openDB]) {
sqlite3_stmt *statement;
//這個 sql 語句特別之處在於 values 裏面有個? 號。在sqlite3_prepare函數裏，?號表示一個未定的值，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;
}
//這裏的數字1，2，3表明上面的第幾個問號，這裏將三個值綁定到三個綁定變量
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); //執行插入語句
success2 = sqlite3_step(statement); //釋放statement sqlite3_finalize(statement);
//若是插入失敗
if (success2 == SQLITE_ERROR) {
NSLog(@"Error: failed to insert into the database with message."); //關閉數據庫 sqlite3_close(_database); return NO;
} //關閉數據庫 sqlite3_close(_database); return YES;
} return NO;
}//獲取數據- (NSMutableArray*)getTestList{
NSMutableArray *array = [NSMutableArray arrayWithCapacity:10]; //判斷數據庫是否打開
if ([self openDB]) {
sqlite3_stmt *statement = nil; //sql語句
char *sql = "SELECT testID, testValue ,testName FROM testTable";//從testTable這個表中獲取 testID, testValue ,testName，若獲取所有的話能夠用*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 { //查詢結果集中一條一條的遍歷全部的記錄，這裏的數字對應的是列值,注意這裏的列值，跟上面sqlite3_bind_text綁定的列值不同！必定要分開，否則會crash，只有這一處的列號不一樣，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];//定義了自動釋放的NSArray，這樣不是個好辦法，會形成內存泄露，建議你們定義局部的數組，再賦給屬性變量。}//更新數據-(BOOL) updateTestList:(sqlTestList *)updateList{
if ([self openDB]) {
sqlite3_stmt *statement;//這至關一個容器，放轉化OK的sql語句 //組織SQL語句
char *sql = "update testTable set testValue = ? and testName = ? WHERE testID = ?";
//將SQL語句放入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;
}
//這裏的數字1，2，3表明第幾個問號。這裏只有1個問號，這是一個相對比較簡單的數據庫操做，真正的項目中會遠遠比這個複雜 //綁定text類型的數據庫數據
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);
//執行SQL語句。這裏是更新數據庫
success = sqlite3_step(statement); //釋放statement sqlite3_finalize(statement);
//若是執行失敗
if (success == SQLITE_ERROR) {
NSLog(@"Error: failed to update the database with message."); //關閉數據庫 sqlite3_close(_database); return NO;
} //執行成功後依然要關閉數據庫 sqlite3_close(_database); return YES;
} return NO;
}//刪除數據- (BOOL) deleteTestList:(sqlTestList *)deletList{ if ([self openDB]) {
sqlite3_stmt *statement; //組織SQL語句
static char *sql = "delete from testTable where testID = ? and testValue = ? and testName = ?"; //將SQL語句放入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;
}
//這裏的數字1，2，3表明第幾個問號。這裏只有1個問號，這是一個相對比較簡單的數據庫操做，真正的項目中會遠遠比這個複雜
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); //執行SQL語句。這裏是更新數據庫
success = sqlite3_step(statement); //釋放statement sqlite3_finalize(statement);
//若是執行失敗
if (success == SQLITE_ERROR) {
NSLog(@"Error: failed to delete the database with message."); //關閉數據庫 sqlite3_close(_database); return NO;
} //執行成功後依然要關閉數據庫 sqlite3_close(_database); return YES;
} return NO;
}//查詢數據- (NSMutableArray*)searchTestList:(NSString*)searchString{
NSMutableArray *array = [NSMutableArray arrayWithCapacity:10]; //判斷數據庫是否打開
if ([self openDB]) {
sqlite3_stmt *statement = nil; //sql語句
NSString *querySQL = [NSString stringWithFormat:@"SELECT * from testTable where testName like \"%@\"",searchString]; const char *sql = [querySQL UTF8String];// char *sql = "SELECT * FROM testTable WHERE testName like ?";//這裏用like代替=能夠執行模糊查找，原來是"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); //查詢結果集中一條一條的遍歷全部的記錄，這裏的數字對應的是列值。
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//剛纔.h文件裏定義的類在這實現@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
這就是封裝好的類，能夠重用哦！spa
下面是添加數據頁面.net
這也是一個類，來看.h文件指針
#import <UIKit/UIKit.h>#import "sqlService.h"@interface operateSqlViewController : UIViewController {
UITextField *idValue;
UITextField *textValue;
UITextField *textName; int oprateType;//區分數據插入與更新
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
再來看看.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:@"數據插入"];
} else if(oprateType == 1){
[self.navigationItem setTitle:@"數據更新"];
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:@"請輸入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:@"請輸入電話"
delegate:self
cancelButtonTitle:@"好"
otherButtonTitles:nil];
[alert show];
[alert release]; return;
} if (textName.text.length == 0) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示"
message:@"請輸入姓名"
delegate:self
cancelButtonTitle:@"好"
otherButtonTitles:nil];
[alert show];
[alert release]; return;
}
//初始化數據庫
sqlService *sqlSer = [[sqlService alloc] init];
//數據庫插入
if (oprateType == 0) {
sqlTestList *sqlInsert = [[sqlTestList alloc]init];
sqlInsert.sqlID = [idValue.text intValue];
sqlInsert.sqlText = textValue.text;
sqlInsert.sqlname = textName.text;
//調用封裝好的數據庫插入函數
if ([sqlSer insertTestList:sqlInsert]) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示"
message:@"插入數據成功"
delegate:self
cancelButtonTitle:@"好"
otherButtonTitles:nil];
[alert show];
[alert release];
} else {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示"
message:@"插入數據失敗"
delegate:self
cancelButtonTitle:@"好"
otherButtonTitles:nil];
[alert show];
[alert release];
}
[sqlInsert release];
} //數據庫更新
if(oprateType == 1){
sqlTestList *newValue = [[sqlTestList alloc]init];
newValue.sqlID = [idValue.text intValue];
newValue.sqlText = textValue.text;
newValue.sqlname = textName.text;
//調用封裝好的更新數據庫函數
if ([sqlSer updateTestList:newValue]) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示"
message:@"更新數據成功"
delegate:self
cancelButtonTitle:@"好"
otherButtonTitles:nil];
[alert show];
[alert release];
} else {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示"
message:@"更新數據失敗"
delegate:self
cancelButtonTitle:@"好"
otherButtonTitles:nil];
[alert show];
[alert release];
}
[newValue release];
}
}@end
代碼寫的有些囉嗦，不過不難容易看懂，很少解釋了，要在xib文件中添加3個UITextField和ULabel，要記得連線。
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;//搜索欄
}
@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];//先初始化那個專門用於存數據的類，才調用類獲取數據的方法}- (void)viewDidAppear:(BOOL)animated{//在這裏寫是爲了等待時間縮短一點，數據若是不少的，在這裏寫可讓數據提早加載
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];//觸發這個insertValue方法時隱藏鍵盤
operateSqlViewController *operateController = [[operateSqlViewController alloc] init ];
UINavigationController *theNavController = [[UINavigationController alloc]
initWithRootViewController:operateController];//這裏若是不初始化一個UINavigationController類的對象來存放operateSqlViewController類的UIViewController，就不會有最上面的導航欄了。
operateController.oprateType = 0;//optrateType爲0時爲數據插入 [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:@"請選擇要更新的項"
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)];//在這裏面獲取點擊的行，由於table的第一行沒顯示數據，因此這裏要減1。
operateSqlViewController *operateController = [[operateSqlViewController alloc] init ];
UINavigationController *theNavController = [[UINavigationController alloc]
initWithRootViewController:operateController];
operateController.oprateType = 1;//optrateType爲1時爲數據更新
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:@"請選擇要刪除的項"
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:@"刪除數據成功"
delegate:self
cancelButtonTitle:@"好"
otherButtonTitles:nil];
[alert show];
[alert release];
//刪除成功後從新獲取數據更新列表
listData = [sqlSer getTestList];
[utableView reloadData];
} else {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示"
message:@"刪除數據失敗"
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:@"請輸入要查詢數據的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,未查詢到數據，請查看name是否有誤"
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;//從第二行開始，第一行不顯示數據}- (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)];//讀取數據的時候也要減一行，從第二行開始
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",@"電話", 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;//讓第一行不能點擊 } else
return indexPath;
}@end
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