Send POST Request

readme.txt

The interface expects one UIButton and two UITextFields. The UIButton is connected to the `loginButtonClicked` IBAction and each text field is connected to the respective IBOutlet. 

index.php

<?php

echo $_POST['username'] . ":" . $_POST['password'];

ViewController.h

//
//  ViewController.h
//  LoginDemo
//
//  Created by John Ciacia on 4/1/12.
//  Copyright (c) 2012 Compiled Thoughts. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController {
    IBOutlet UITextField *usernameTextField;
    IBOutlet UITextField *passwordTextField;
}


- (IBAction)loginButtonClicked:(id)sender;
- (void)doLogin:(NSString *)username:(NSString *)password;

@property (nonatomic, retain) IBOutlet UITextField *usernameTextField;
@property (nonatomic, retain) IBOutlet UITextField *passwordTextField;


@end

ViewController.m

//
//  ViewController.m
//  LoginDemo
//
//  Created by John Ciacia on 4/1/12.
//  Copyright (c) 2012 Compiled Thoughts. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController
@synthesize usernameTextField;
@synthesize passwordTextField;


/**
 * Send a POST request with a 'username' and 'password' to http://www.example.com/index.php 
 */
- (void)doLogin:(NSString *)username:(NSString *)password {
    NSString *url = [NSString stringWithFormat:@"http://www.example.com/index.php"];

    NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
    [request setURL:[NSURL URLWithString:url]];
    [request setHTTPMethod:@"POST"];

	//create the body
    NSString *post = [NSString stringWithFormat:@"&username=%@&password=%@", username, password];
    NSData *postBody = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];

    //set headers
    [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Current-Type"];
    [request setValue:[NSString stringWithFormat:@"%d", [postBody length]] forHTTPHeaderField:@"Content-Length"];

    //set request body
    [request setHTTPBody:postBody];

    //get response
    NSHTTPURLResponse *urlResponse = nil;  
    NSError *error = [[NSError alloc] init];  
    NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&error];  
    NSString *result = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];

    if ([urlResponse statusCode] == 200 ) {
        NSLog(@"Response: %@", result);
    } else {
        NSLog(@"There was an error. Return code: %d", (int)[urlResponse statusCode]);
    }
}

- (IBAction)loginButtonClicked:(id)sender {
    [self doLogin:usernameTextField.text:passwordTextField.text];
}

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)viewDidUnload {
    [super viewDidUnload];
    // Release any retained subviews of the main view.
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}

@end