//第一步导入FMDB数据库
//第二步在Build Phasses中导入数据库：libsqlite3.tbd
//创建DataBase类，在DataBase类中创建两个基于NSObject的类对象（Tel和DataBase）
.h
@interface Tel : NSObject
@property(nonatomic,assign)NSInteger theId;
@property(nonatomic,strong)NSString *name,*phone,*em;
@end
@interfaceDataBase :NSObject
//单例方法
+(instancetype)initData;
-(void)initSql;
-(void)addData:(Tel*)data;
-(void)update:(Tel*)data;
-(void)delData:(NSInteger)theid;
-(NSMutableArray*)showArray;
@end
.m
#import "DataBase.h"
#import "FMDatabase.h"
//创建静态变量
staticDataBase*sqlData;
static FMDatabase *db;
@implementation Tel
@end
@implementation DataBase
+(instancetype)initData{
if(!sqlData) {
sqlData= [DataBasenew];
}
return sqlData;
}
-(void)initSql{
NSString *strPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0];
NSString*fileName = [strPathstringByAppendingString:@"filename.db"];
db= [[FMDatabasealloc]initWithPath:fileName];
if([dbopen]) {
NSLog(@"打开数据库成功");
[db executeUpdate:@"create table sql(theId integer primary key,name text,phone text,em text)"];
[dbclose];
}
else{
NSLog(@"打开数据库失败");
}
}
-(void)addData:(Tel*)data{
if([dbopen])
{
[db executeUpdate:[NSString stringWithFormat:@"insert into sql values(null,'%@','%@','%@')",data.name,data.phone,data.em]];
}
else
{
NSLog(@"添加数据失败");
}
[dbclose];
}
-(void)update:(Tel*)data{
if([dbopen]) {
[db executeUpdate:[NSString stringWithFormat:@"update sql set name ='%@',phone = '%@',em = '%@' where theId = '%ld'",data.name,data.phone,data.em,data.theId]];
}
else
{
NSLog(@"修改数据失败");
}
[dbclose];
}
-(void)delData:(NSInteger)theid
{
if([dbopen]) {
[db executeUpdate:[NSString stringWithFormat:@"delete from sql where theId = '%ld'",theid]];
}
else
{
NSLog(@"删除数据失败");
}
[dbclose];
}
-(NSMutableArray*)showArray{
NSMutableArray *array = [NSMutableArray array];
FMResultSet *set = [FMResultSet new];
if([dbopen])
{
set = [db executeQuery:@"select *from sql"];
while([setnext]) {
Tel*t = [Telnew];
t.theId= [setintForColumn:@"theId"];
t.name= [setstringForColumn:@"name"];
t.phone= [setstringForColumn:@"phone"];
t.em= [setstringForColumn:@"em"];
[arrayaddObject:t];
}
}
else
{
NSLog(@"查询数据失败");
}
[dbclose];
returnarray;
}
@end
//创建基于：UIView的类(TelView)
.h
@interfaceTelView :UIView
@property(nonatomic,strong)UITextField*nameTf,*phoneTf,*emTf;
@end
.m
#import "TelView.h"
@implementation TelView
-(instancetype)initWithFrame:(CGRect)frame{
if(self= [superinitWithFrame:frame]) {
[selfaddSubview:self.nameTf];
[selfaddSubview:self.phoneTf];
[selfaddSubview:self.emTf];
}
return self;
}
-(UITextField*)nameTf{
if(!_nameTf) {
_nameTf= [[UITextFieldalloc]initWithFrame:CGRectMake(0,90,self.frame.size.width,44)];
_nameTf.placeholder = @"please you name";
_nameTf.textAlignment = NSTextAlignmentCenter;
_nameTf.borderStyle = UITextBorderStyleRoundedRect;
}
return _nameTf;
}
-(UITextField*)phoneTf{
if(!_phoneTf) {
_phoneTf= [[UITextFieldalloc]initWithFrame:CGRectMake(0,140,self.frame.size.width,44)];
_phoneTf.placeholder = @"please you phone";
_phoneTf.textAlignment = NSTextAlignmentCenter;
_phoneTf.borderStyle = UITextBorderStyleRoundedRect;
}
return _phoneTf;
}
-(UITextField *)emTf{
if(!_emTf)
{
_emTf= [[UITextFieldalloc]initWithFrame:CGRectMake(0,190,self.frame.size.width,44)];
_emTf.placeholder = @"please you email";
_emTf.textAlignment = NSTextAlignmentCenter;
_emTf.borderStyle = UITextBorderStyleRoundedRect;
}
return _emTf;
}
@end
//创建导航条
//在AppDelgate.m中添加以下代码
#import "ViewController.h"
@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions {
self.window.rootViewController =
[[UINavigationController alloc]initWithRootViewController:[ViewController new]];
return YES;
}
//在ViewController.h中把UIViewController 修改成：UITableViewController
.m 添加以下代码
#import "ViewController.h"
//Model
#import "DataBase.h"
//Controller
#import "SecViewController.h"
@interface ViewController ()
{
NSMutableArray *array;
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.title=@"通讯录";
UISearchBar*search = [[UISearchBaralloc]initWithFrame:CGRectMake(0,0,self.view.frame.size.width,44)];
self.tableView.tableHeaderView = search;
//创建右按钮
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]initWithTitle:@"添加" style:UIBarButtonItemStylePlain target:self action:@selector(click)];
//设置行高
self.tableView.rowHeight = 90;
//初始化数组
array = [NSMutableArray array];
}
-(void)click{
[self.navigationController pushViewController:[SecViewController new] animated:YES];
}
//视图将要展示
-(void)viewWillAppear:(BOOL)animated
{
[[DataBase initData]initSql];
array = [[DataBase initData]showArray];
[self.tableView reloadData];
}
#pragma mark -
#pragma mark UITableViewDataSource
-(NSInteger)tableView:(UITableView*)tableView numberOfRowsInSection:(NSInteger)section
{
returnarray.count;
}
-(UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@""];
if(!cell)
{
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@""];
}
Tel*t =array[indexPath.row];
cell.textLabel.text= [NSStringstringWithFormat:@"%ld\n姓名:%@\n手机号:%@\n邮箱:%@",t.theId,t.name,t.phone,t.em];
cell.textLabel.numberOfLines = 0;
returncell;
}
-(void)tableView:(UITableView*)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath*)indexPath{
[[DataBase initData]initSql];
[[DataBaseinitData]delData:[array[indexPath.row]theId]];
[arrayremoveObject:array[indexPath.row]];
[self.tableView reloadData];
}
-(void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath{
SecViewController *sec = [SecViewController new];
sec.t=array[indexPath.row];
[self.navigationController pushViewController:sec animated:YES];
}
@end
//创建SecViewController
在.h好中添加头文件和声明属性：
#import "DataBase.h"
@property(nonatomic,strong)Tel *t;
在.m文件夹中添加以下大码
//Model
#import "DataBase.h"
//View
#import "TelView.h"
@interface SecViewController ()
{
TelView*tview;
}
@end
@implementationSecViewController
- (void)viewDidLoad {
[super viewDidLoad];
tview = [[TelView alloc]initWithFrame:self.view.frame];
tview.backgroundColor = [UIColor lightGrayColor];
self.view=tview;
tview.nameTf.text = self.t.name;
tview.phoneTf.text = self.t.phone;
tview.emTf.text = self.t.em;
if(!self.t) {
self.title=@"添加数据";
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]initWithTitle:@"保存" style:UIBarButtonItemStylePlain target:self action:@selector(save)];
}
else{
self.title=@"修改数据";
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]initWithTitle:@"修改" style:UIBarButtonItemStylePlain target:self action:@selector(change)];
}
}
-(void)save
{
Tel*tel = [Telnew];
tel.name = tview.nameTf.text;
tel.phone = tview.phoneTf.text;
tel.em=tview.emTf.text;
[[DataBase initData]initSql];
[[DataBase initData]addData:tel];
[self.navigationController popViewControllerAnimated:YES];
}
-(void)change
{
self.t.name =tview.nameTf.text;
self.t.phone = tview.phoneTf.text;
self.t.em = tview.emTf.text;
[[DataBase initData]initSql];
[[DataBase initData]update:self.t];
[self.navigationController popViewControllerAnimated:YES];
}