iOS利用ASIHTTPRequest 實現一個簡單的登陸驗證
今天給大家帶來一個簡單的登陸驗證，用的是ASIHttpRequest 這個開源類庫，使用的方法很簡單，從網上下載下來以后，添加到項目中，并添加一下這些框架。
下面上代碼
// // ViewController.h // NetDemo // // Created by zhouhaifeng on 12-6-6. // Copyright (c) 2012年 zhouhaifeng. All rights reserved. //import <UIKIT uikit.h="">
import "ASIHttpHeaders.h"
import "CJSONDeserializer.h"
import "tooles.h"
@interface ViewController : UIViewController
{ UITextField username; UITextField password; } @property (nonatomic,retain) UITextField username; @property (nonatomic,retain) UITextField password;
@end</asihttprequestdelegate></uikit></pre>
// // ViewController.m // NetDemo // // Created by zhouhaifeng on 12-6-6. // Copyright (c) 2012年 zhouhaifeng. All rights reserved. //import "ViewController.h"
define HOSTURL @"
@interface ViewController () -(void) login:(id)sender; -(void) GetErr:(ASIHTTPRequest )request; -(void) GetResult:(ASIHTTPRequest )request; @end
@implementation ViewController @synthesize username,password;
(void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. UILabel *txt1 = [[UILabel alloc] initWithFrame:CGRectMake(30,100,70,30)]; [txt1 setText:@"用戶名"]; [txt1 setBackgroundColor:[UIColor clearColor]]; [self.view addSubview:txt1];
UILabel *txt2 = [[UILabel alloc] initWithFrame:CGRectMake(30,140,70,30)]; [txt2 setText:@"密 碼"]; [txt2 setBackgroundColor:[UIColor clearColor]]; [self.view addSubview:txt2];
username = [[UITextField alloc]initWithFrame:CGRectMake(120,100, 150, 30)]; [username setBorderStyle:UITextBorderStyleRoundedRect]; [self.view addSubview:username];
password = [[UITextField alloc]initWithFrame:CGRectMake(120,140, 150, 30)]; [password setBorderStyle:UITextBorderStyleRoundedRect]; [password setSecureTextEntry:YES]; [self.view addSubview:password];
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect]; [btn setTitle:@"提交" forState:UIControlStateNormal]; [btn addTarget:self action:@selector(login:) forControlEvents:UIControlEventTouchUpInside]; [btn setFrame:CGRectMake(90, 180, 150, 40)]; [self.view addSubview:btn];
}
-(void) login:(id)sender { //表單提交前的驗證 if (username.text == nil||password.text==nil ) { [tooles MsgBox:@"用戶名或密碼不能為空！"]; return; } //隱藏鍵盤 [username resignFirstResponder]; [password resignFirstResponder]; // [tooles showHUD:@"正在登陸...."]; NSString urlstr = HOSTURL; NSURL myurl = [NSURL URLWithString:urlstr]; ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:myurl]; //設置表單提交項 [request setPostValue:username.text forKey:@"username"];
[request setPostValue:username.text forKey:@"password"]; [request setDelegate:self]; [request setDidFinishSelector:@selector(GetResult:)]; [request setDidFailSelector:@selector(GetErr:)]; [request startAsynchronous];}
//獲取請求結果
(void)GetResult:(ASIHTTPRequest *)request{
[tooles removeHUD]; NSData data =[request responseData]; NSDictionary dictionary = [[CJSONDeserializer deserializer] deserializeAsDictionary:data error:nil];
//輸出接收到的字符串
NSString *str = [NSString stringWithUTF8String:[data bytes]];
NSLog(@"%@",str);
//判斷是否登陸成功
if ([dictionary objectForKey:@"yes"]) {[tooles MsgBox:[dictionary objectForKey:@"yes"]]; return;}else if ([dictionary objectForKey:@"error"] != [NSNull null]) {
[tooles MsgBox:[dictionary objectForKey:@"error"]]; return;}
}
//連接錯誤調用這個函數
(void) GetErr:(ASIHTTPRequest *)request{
[tooles removeHUD];
[tooles MsgBox:@"網絡錯誤,連接不到服務器"]; }
(void)viewDidUnload { [super viewDidUnload]; // Release any retained subviews of the main view. }
(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); }
-(void) dealloc { [username release]; [password release]; [super dealloc]; }
@end</pre>
php端驗證的代碼，隨便寫了下，后面就是返回一個JSON格式的字符串。
<?php if($_POST['username'] == "admin" && $_POST['password'] == "admin") { echo '{"yes":"登陸成功"}'; }else { echo '{"error":"用戶名或密碼錯誤"}'; }; ?>
原文地址：http://blog.csdn.net/toss156/article/details/7638529