iOS sqlite對數(shù)據(jù)庫的各種操作(日常整理全)

更新時間：2016年03月25日 09:42:39 作者：徒步天涯

在IOS中使用Sqlite來處理數(shù)據(jù)。如果你已經(jīng)了解了SQL，那你可以很容易的掌握SQLite數(shù)據(jù)庫的操作。本文給大家介紹iOS sqlite對數(shù)據(jù)庫的各種操作，需要的朋友參考下吧

在IOS中使用Sqlite來處理數(shù)據(jù)。如果你已經(jīng)了解了SQL，那你可以很容易的掌握SQLite數(shù)據(jù)庫的操作。iOS對于數(shù)據(jù)庫的操作：增加、刪除、查找、修改具體介紹如下所示：

首先需要創(chuàng)建一個數(shù)據(jù)庫：本程序的數(shù)據(jù)庫是在火狐瀏覽器里的插件里寫的微量型數(shù)據(jù)庫

火狐找查找SQLite Manager的步驟：

第一步：在工具欄找到附加組件，點擊進入

第二步：搜索 SQP，找到并下載，安裝完成之后需要重啟瀏覽器

第三步：在工具只樂觀找到SQLite Manager，點擊打開

SQLite Manager界面如圖所示

注：SQLite Manager是微量型的數(shù)據(jù)庫編程軟件，所以一次只能執(zhí)行一句代碼?。?！

•創(chuàng)建數(shù)據(jù)庫

--數(shù)據(jù)庫的建立
create table team
(　-- 創(chuàng)建名字為team的table　　stu_id integer primary key autoincrement, 　　stu_name varchar(100), 　　stu_password varchar(100), 　　stu_login varchar(100) )--添加信息 insert into team(stu_name,stu_password,stu_login) values('xiaming','123456','xm') insert into team(stu_name,stu_password,stu_login) values('zhangsan','123456',' zs') --查詢信息select *from team --刪除信息delete from team where stu_id=3

工程目錄文件如下：

這里需要導入一個系統(tǒng)自帶的文件libsqlite3.0.tbd

步驟如圖：

•實現(xiàn)工程

ViewController.h

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface ViewController : UIViewController
@property(strong,nonatomic)UIButton *showbtn;
@property(strong,nonatomic)UIButton *insertbtn;
@property(strong,nonatomic)UIButton *updatebtn;
@property(strong,nonatomic)UIButton *deletebtn;
@end

ViewController.h

#import "ViewController.h"
#define PATH [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:@"team.sqlite"]
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// 獲取沙盒 Documents文件路徑
NSLog(@"%@",[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]);
[self button];
}
-(void)button
{
self.showbtn=[UIButton buttonWithType:UIButtonTypeSystem];
self.showbtn.frame=CGRectMake(100, 50, 200, 50);
[self.showbtn setTitle:@"數(shù)據(jù)庫顯示" forState:UIControlStateNormal];
[self.showbtn addTarget:self action:@selector(showSql) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:self.showbtn];
self.insertbtn=[UIButton buttonWithType:UIButtonTypeSystem];
self.insertbtn.frame=CGRectMake(100, 100, 200, 50);
[self.insertbtn setTitle:@"數(shù)據(jù)庫添加" forState:UIControlStateNormal];
[self.insertbtn addTarget:self action:@selector(insertSql) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:self.insertbtn];
self.updatebtn=[UIButton buttonWithType:UIButtonTypeSystem];
self.updatebtn.frame=CGRectMake(100, 150, 200, 50);
[self.updatebtn setTitle:@"數(shù)據(jù)庫修改" forState:UIControlStateNormal];
[self.updatebtn addTarget:self action:@selector(updateSql) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:self.updatebtn];
self.deletebtn=[UIButton buttonWithType:UIButtonTypeSystem];
self.deletebtn.frame=CGRectMake(100, 200, 200, 50);
[self.deletebtn setTitle:@"數(shù)據(jù)庫刪除" forState:UIControlStateNormal];
[self.deletebtn addTarget:self action:@selector(deleteSql) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:self.deletebtn];
}
#pragma mark - 顯示數(shù)據(jù)表中的所有信息
-(void)showSql
{
NSLog(@"顯示數(shù)據(jù)庫信息");
// 數(shù)據(jù)庫
sqlite3 *db;
// 根據(jù)指定的數(shù)據(jù)庫文件存儲路徑打開數(shù)據(jù)庫
int result=sqlite3_open([PATH UTF8String], &db);
// 創(chuàng)建執(zhí)行命令對象
sqlite3_stmt *stmt;
// 打開數(shù)據(jù)庫成功
if (result==SQLITE_OK) {
NSLog(@"連接成功");
// 執(zhí)行預處理命令
int res=sqlite3_prepare_v2(db, "select *from team", -1, &stmt, nil);
if (res==SQLITE_OK) {
// 循環(huán)遍歷數(shù)據(jù)表的行信息
while (sqlite3_step(stmt)==SQLITE_ROW) {
// 獲取數(shù)據(jù)表中整型列的信息
int stu_id=sqlite3_column_int(stmt, 0);
NSLog(@"stu_id is %d",stu_id);
// 獲取數(shù)據(jù)表中字符型的列的信息
NSLog(@"%@",[NSString stringWithFormat:@"%s",sqlite3_column_text(stmt, 1)]);
NSLog(@"%@",[NSString stringWithFormat:@"%s",sqlite3_column_text(stmt, 2)] );
NSLog(@"%@",[NSString stringWithFormat:@"%s",sqlite3_column_text(stmt, 3)] ); 
}
}
}
}
#pragma mark -增加信息
-(void)insertSql
{
sqlite3 *db;
sqlite3_stmt *stmt;
sqlite3_open([PATH UTF8String], &db);
int rst=sqlite3_prepare_v2(db, "insert into team(stu_name,stu_password,stu_login) values(?,?,?)", -1, &stmt, nil);
sqlite3_bind_text(stmt, 1, "wangwu", -1, nil);
sqlite3_bind_text(stmt, 2, "123456", -1, nil);
sqlite3_bind_text(stmt, 3, "ww", -1, nil);
// 判斷是否增加成功
if (rst==SQLITE_OK) {
if (SQLITE_DONE==sqlite3_step(stmt)) {
NSLog(@"add ok");
}else{
NSLog(@"add fail");
}
}
}
#pragma mark - 修改數(shù)據(jù)庫
-(void)updateSql
{
sqlite3 *db;
sqlite3_stmt *stmt;
sqlite3_open([PATH UTF8String], &db);
// 方法一
/*
int res = sqlite3_prepare_v2(db, "update team set stu_name=(?),stu_password=(?),stu_login=(?) where stu_id=2" , -1, &stmt, nil);
sqlite3_bind_text(stmt, 1, "xiaoming", -1, nil);
sqlite3_bind_text(stmt, 2, "123456", -1, nil);
sqlite3_bind_text(stmt, 3, "xm", -1, nil);
*/
// 方法二
int rst=sqlite3_prepare_v2(db, "update team setstu_name='zl',stu_password='zl123',stu_login='zhangsan' where stu_id=4", -1, &stmt, nil);
// 判斷是否修改成功
if (rst==SQLITE_OK) {
if (SQLITE_DONE == sqlite3_step(stmt)) {
NSLog(@" update ok");
}else{
NSLog(@"update fail");
}
}
}
-(void)deleteSql
{
sqlite3 *db;
sqlite3_stmt *stmt;
sqlite3_open([PATH UTF8String], &db);
int rst=sqlite3_prepare_v2(db, "delete from team where stu_id=9", -1, &stmt, nil);
// 判斷是否刪除成功
if (rst==SQLITE_OK) {
if (SQLITE_DONE==sqlite3_step(stmt)) {
NSLog(@" delete ok");
}else{
NSLog(@"delete fail");
}
}
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end

以上內(nèi)容是小編給大家日常收集整理的iOS sqlite對數(shù)據(jù)庫的各種操作，希望對大家有所幫助，如果大家想了解更多有關ios sqlite相關知識請登錄腳本之家網(wǎng)站了解詳情，同時也非常感謝大家一直以來對腳本之家網(wǎng)站的支持！

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