UISB 登陆

ViewController.h

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
{
    //登录页面的组成
    //登陆名提示 输入框
    //密码提示
    //登录按钮
    //注册按钮
    //作为私有 
    UILabel* _lbUserName;
    UILabel* _lbPassword;
    
    UITextField* _tfUserName;
    UITextField* _tfPassWord;
    
    UIButton* _btLogin;
    UIButton* _btRegister;
    
}



@end

viewController.m

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    _lbUserName=[[UILabel alloc]init];
    _lbUserName.frame=CGRectMake(20, 60, 80, 40);
    _lbUserName.text=@"用户名";
    _lbUserName.font=[UIFont systemFontOfSize:20];
    _lbUserName.textAlignment=NSTextAlignmentLeft;
    
    _lbPassword=[[UILabel alloc]init];
    _lbPassword.frame=CGRectMake(20, 140, 80, 40);
    _lbPassword.text=@"密码";
    _lbPassword.font=[UIFont systemFontOfSize:20];
    _lbPassword.textAlignment=NSTextAlignmentLeft;

    
    _tfUserName=[[UITextField alloc]init];
    _tfUserName.frame=CGRectMake(120, 60, 180, 40);
    _tfUserName.placeholder=@"亲输入用户名";
    _tfUserName.borderStyle=UITextBorderStyleRoundedRect;
    
    _tfPassWord=[[UITextField alloc]init];
    _tfPassWord.frame=CGRectMake(120, 140, 180, 40);
    _tfPassWord.placeholder=@"请输入密码";
    _tfPassWord.borderStyle=UITextBorderStyleRoundedRect;
    _tfPassWord.secureTextEntry=YES;
    
    _btLogin=[UIButton buttonWithType:UIButtonTypeRoundedRect];
    _btLogin.frame=CGRectMake(120, 300, 80, 40);
    [_btLogin setTitle:@"登陆" forState:UIControlStateNormal];
    [_btLogin addTarget:self action:@selector(pressLogin) forControlEvents:UIControlEventTouchUpInside];
    
    
    _btRegister=[UIButton buttonWithType:UIButtonTypeRoundedRect];
    _btRegister.frame=CGRectMake(120, 360, 80, 40);
    [_btRegister setTitle:@"注册" forState:UIControlStateNormal];
    [_btRegister addTarget:self action:@selector(pressRegister) forControlEvents:UIControlEventTouchUpInside];
    
    [self.view addSubview:_lbUserName];
    [self.view addSubview:_lbPassword];
    [self.view addSubview:_tfUserName];
    [self.view addSubview:_tfPassWord];
    [self.view addSubview:_btLogin];
    [self.view addSubview:_btRegister];
    
    
    
}
//登陆

-(void)pressLogin
{
    NSString* strName=@"michael";
    NSString* strPass=@"123456";
    //获取输入框中的用户名
    NSString* strTextName=_tfUserName.text;
    NSString* strTextPass=_tfPassWord.text;
    
    if ([strName isEqualToString:strTextName] && [strPass isEqualToString:strTextPass])
    {
        
        NSLog(@"用户名密码正确");
//        UIAlertView* alView =[[UIAlertView alloc] initWithTitle:@"提示" message:@"验证成功，登陆成功" delegate:nil cancelButtonTitle:@"确认" otherButtonTitles:nil];
//        [alView show];
        
    }else
    {
        NSLog(@"用户名密码错误");
//        UIAlertView* alView=[[UIAlertView alloc] initWithTitle:@"提示" message:@"验证失败 用户名或密码错误" delegate:nil cancelButtonTitle:@"确认" otherButtonTitles:nil];
//        [alView show];
        
    }
    
    
    
    
    
    
}
//注册
-(void)pressRegister
{
    
    
    
}

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
    //回收键盘
    [_tfUserName resignFirstResponder];
    [_tfPassWord resignFirstResponder];
    
}


@end