【代码笔记】iOS-账号，密码记住

一，效果图。

 



 

 



二，工程图。



三，代码。

RegisViewController.h

#import <UIKit/UIKit.h>

@interface RegisViewController : UIViewController

@end

 

RegisViewController.m

//注册页面
#import "RegisViewController.h"
#import "LoginViewController.h"

@interface RegisViewController ()
{
UITextField *accountField;
UITextField *passField;
}

@end

@implementation RegisViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}

- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.

self.title=@"注册";

[self initView];

}
-(void)initView
{
accountField=[[UITextField alloc]initWithFrame:CGRectMake(50, 100, 200, 40)];
[accountField setBackgroundColor:[UIColor redColor]];
[accountField setPlaceholder:@"请输入账号"];
[accountField setKeyboardType:UIKeyboardTypeNumberPad];
[accountField setClearsContextBeforeDrawing:YES];
[self.view addSubview:accountField];

passField=[[UITextField alloc]initWithFrame:CGRectMake(50, 160, 200, 40)];
[passField setBackgroundColor:[UIColor redColor]];
[passField setPlaceholder:@"请输入密码"];
[passField setKeyboardType:UIKeyboardTypeNumberPad];
[passField setClearsContextBeforeDrawing:YES];
[self.view addSubview:passField];

UIButton *registeBut=[UIButton buttonWithType:UIButtonTypeRoundedRect];
registeBut.backgroundColor=[UIColor greenColor];
registeBut.frame=CGRectMake(70, 220, 100, 40);
[registeBut setTitle:@"注册" forState:UIControlStateNormal];
[registeBut addTarget:self action:@selector(resis) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:registeBut];

}

//注册的时候，将账号，密码保存到本地。
-(void)resis
{

NSUserDefaults *defaut=[NSUserDefaults standardUserDefaults];
[defaut setObject:accountField.text forKey:@"account"];
[defaut setObject:passField.text forKey:@"password"];
[defaut synchronize];

LoginViewController *login=[[LoginViewController alloc]init];
[self.navigationController pushViewController:login animated:YES];

}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

 

LoginViewController.h

#import <UIKit/UIKit.h>

@interface LoginViewController : UIViewController

@end

 

LoginViewController.m

//登陆页面
#import "LoginViewController.h"

@class RegisViewController;
@interface LoginViewController ()
{
UITextField *accountField;
UITextField *passField;
}
@end

@implementation LoginViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}

- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
self.title=@"登陆";

[self initView];

}
-(void)initView
{
accountField=[[UITextField alloc]initWithFrame:CGRectMake(50, 100, 200, 40)];
[accountField setBackgroundColor:[UIColor redColor]];
[accountField setKeyboardType:UIKeyboardTypeNumberPad];
[accountField setClearsContextBeforeDrawing:YES];
[accountField setText:[[NSUserDefaults standardUserDefaults] objectForKey:@"account"]];
[self.view addSubview:accountField];

passField=[[UITextField alloc]initWithFrame:CGRectMake(50, 160, 200, 40)];
[passField setBackgroundColor:[UIColor redColor]];
[passField setText:[[NSUserDefaults standardUserDefaults] objectForKey:@"password"]];
[passField setKeyboardType:UIKeyboardTypeNumberPad];
[passField setClearsContextBeforeDrawing:YES];
[self.view addSubview:passField];

UIButton *loginBut=[UIButton buttonWithType:UIButtonTypeRoundedRect];
loginBut.backgroundColor=[UIColor greenColor];
loginBut.frame=CGRectMake(70, 220, 100, 40);
[loginBut setTitle:@"登陆" forState:UIControlStateNormal];
[loginBut addTarget:self action:@selector(login) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:loginBut];

}
-(void)login
{
[self.navigationController popViewControllerAnimated:YES];
}