简单的注册 登录

//注册页面的Button事件

- (IBAction)action:(id)sender {

    

    if ([self.username.text isEqualToString:@""]||[self.password.text isEqualToString:@""]||[self.Apassword.text isEqualToString:@""])

    {

        

        

        UIAlertView *av=[[UIAlertView alloc] initWithTitle:@"提示" message:@"输入不能为空" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil];

        [av show];

    }

    else

    {

        if (![self.password.text isEqualToString:self.Apassword.text]) {

            UIAlertView *av=[[UIAlertView alloc] initWithTitle:@"提示" message:@"输入密码不一致" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil];

            [av show];

        }else

        {

            //NSUserDefaults 存一些短小数据

            //在注册里将账号密码存入进去,去登录里取出数据

            NSUserDefaults *user=[NSUserDefaults standardUserDefaults];

            [user setObject:self.username.text forKey:@"userName"];

            [user setObject:self.Apassword.text forKey:@"passWord"];

            [user synchronize];

            [self dismissViewControllerAnimated:YES completion:nil];

            

        }

    

    }

    

}

 

 

****************************

 

//登录

- (IBAction)landing:(id)sender {

    //NSUserDefaults 存放在Library文件perferences

    NSUserDefaults *user=[NSUserDefaults standardUserDefaults];

    

    if ([[user objectForKey:@"userName"]isEqualToString:self.userName.text]&&[[user objectForKey:@"passWord"]isEqualToString:self.passWord.text]) {

    

        UIAlertView *av=[[UIAlertView alloc] initWithTitle:@"提示" message:@"登陆成功" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil];

        [av show];

    }

    else

    {

        UIAlertView *av=[[UIAlertView alloc] initWithTitle:@"提示" message:@"登陆失败" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil];

        [av show];

        

    }

    

}

原文地址:https://www.cnblogs.com/haiying/p/4117594.html