iOS+PHP注册登录系统 iOS部分（下）

// 
// ViewController.m 
// iosLogin 
// 
// Created by 曹晗 on 16/2/25. 
// Copyright :emoji: 2016年 CaoHan. All rights reserved. 
// 
 
#import "ViewController.h" 
 
@interface ViewController () 
@property (weak, nonatomic) IBOutlet UITextField *txtUser; 
@property (weak, nonatomic) IBOutlet UITextField *txtPwd; 
 
@end 
 
@implementation ViewController 
 
- (void)viewDidLoad { 
  [super viewDidLoad]; 
  // Do any additional setup after loading the view, typically from a nib. 
} 
 
- (void)didReceiveMemoryWarning { 
  [super didReceiveMemoryWarning]; 
  // Dispose of any resources that can be recreated. 
} 
- (IBAction)LoginClick:(id)sender { 
  //前后去空格 
  NSString *userName = [_txtUser.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]; 
  NSString *userPwd = [_txtPwd.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]; 
   
  NSDictionary *jsonDic = [self getJsonData:userName userpwd:userPwd]; 
  NSString* loginFlag = [jsonDic objectForKey:@"loginFlag"]; 
  NSLog(@"%@",loginFlag); 
   
  [self aletrInfo:loginFlag]; 
} 
- (IBAction)registButton:(id)sender { 
  UIStoryboard *storboard = self.storyboard; 
  registViewController *vc2 = [storboard instantiateViewControllerWithIdentifier:@"vc2"]; 
  [self presentViewController:vc2 animated:YES completion:nil]; 
} 
//用于请求PHP 获得JSON 
- (NSDictionary *)getJsonData:(NSString *)user_name userpwd:(NSString *)user_pwd { 
  NSError *error; 
  NSString *urlString = [NSString stringWithFormat:@"http://192.168.1.106/iosLogin/index.php?action=login&user_name=%@&user_pwd=%@",user_name,user_pwd]; 
  //加载一个NSURL对象 
  NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:urlString]]; 
  //将请求的url数据放到NSData对象中 
  NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; 
  //IOS5自带解析类NSJSONSerialization从response中解析出数据放到字典中 
  NSDictionary *jsonDic = [NSJSONSerialization JSONObjectWithData:response options:NSJSONReadingMutableLeaves error:&error]; 
  NSLog(@"接收到的数据为%@",jsonDic); 
  return jsonDic; 
} 
//弹出信息 
- (void)aletrInfo:(NSString *)loginFlag{ 
  UIAlertView *alert = [[UIAlertView alloc]init]; 
  [alert setTitle:@"提示"]; [alert setDelegate:nil]; 
  [alert addButtonWithTitle:@"确定"]; 
   
  if ([loginFlag isEqual: @"0"]) { 
    [alert setMessage:@"账号或密码错误"]; 
  } 
  if ([loginFlag isEqual:@"1"]) { 
    [alert setMessage:@"登陆成功"]; 
  } 
  [alert show]; 
} 
 
@end 

// 
// registViewController.m 
// iosLogin 
// 
// Created by 曹晗 on 16/2/27. 
// Copyright 2016年 CaoHan. All rights reserved. 
// 
 
#import "registViewController.h" 
 
@interface registViewController () 
@property (weak, nonatomic) IBOutlet UITextField *txtUser; 
@property (weak, nonatomic) IBOutlet UITextField *txtPwd; 
 
@end 
 
@implementation registViewController 
 
- (void)viewDidLoad { 
  [super viewDidLoad]; 
  // Do any additional setup after loading the view. 
} 
 
- (void)didReceiveMemoryWarning { 
  [super didReceiveMemoryWarning]; 
  // Dispose of any resources that can be recreated. 
} 
//这个是注册按钮 
- (IBAction)registButton:(id)sender { 
  NSString *userName = [_txtUser.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]; 
  NSString *userPwd = [_txtPwd.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]; 
   
  NSDictionary *jsonDic = [self getJsonData:userName userpwd:userPwd]; 
  NSString* registFlag = [jsonDic objectForKey:@"registFlag"]; 
  NSLog(@"%@",registFlag); 
   
  [self aletrInfo:registFlag]; 
   
} 
//这个是返回按钮 
- (IBAction)returnButton:(id)sender { 
  [self dismissModalViewControllerAnimated:YES]; 
} 
 
- (NSDictionary *)getJsonData:(NSString *)user_name userpwd:(NSString *)user_pwd { 
  NSError *error; 
  NSString *urlString = [NSString stringWithFormat:@"http://192.168.1.106/iosLogin/index.php?action=regist&user_name=%@&user_pwd=%@",user_name,user_pwd]; 
  //加载一个NSURL对象 
  NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:urlString]]; 
  //将请求的url数据放到NSData对象中 
  NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; 
  //IOS5自带解析类NSJSONSerialization从response中解析出数据放到字典中 
  NSDictionary *jsonDic = [NSJSONSerialization JSONObjectWithData:response options:NSJSONReadingMutableLeaves error:&error]; 
  NSLog(@"接收到的数据为%@",jsonDic); 
  return jsonDic; 
} 
 
- (void)aletrInfo:(NSString *)registFlag{ 
  UIAlertView *alert = [[UIAlertView alloc]init]; 
  [alert setTitle:@"提示"]; [alert setDelegate:nil]; 
  [alert addButtonWithTitle:@"确定"]; 
   
  if ([registFlag isEqual: @"0"]) { 
    [alert setMessage:@"用户名已存在"]; 
  } 
  if ([registFlag isEqual:@"1"]) { 
    [alert setMessage:@"注册成功"]; 
  } 
  [alert show]; 
} 
 
@end