iOS/iPhone Delete Remove Data on Web Server (URL,Website)

CREATE TABLE `member` (
  `MemberID` int(11) NOT NULL auto_increment,
  `Name` varchar(50) NOT NULL,
  `Tel` varchar(50) NOT NULL,
  PRIMARY KEY  (`MemberID`)
) ENGINE=MyISAM  AUTO_INCREMENT=4 ;

-- 
-- Dumping data for table `member`
-- 

INSERT INTO `member` VALUES (1, 'Weerachai', '0819876107');
INSERT INTO `member` VALUES (2, 'Win', '021978032');
INSERT INTO `member` VALUES (3, 'Eak', '0876543210');

<?php
	$objConnect = mysql_connect("localhost","root","root");
	$objDB = mysql_select_db("mydatabase");
	$strSQL = "SELECT * FROM member WHERE 1  ";
	$objQuery = mysql_query($strSQL);
	$intNumField = mysql_num_fields($objQuery);
	$resultArray = array();
	while($obResult = mysql_fetch_array($objQuery))
	{
		$arrCol = array();
		for($i=0;$i<$intNumField;$i++)
		{
			$arrCol[mysql_field_name($objQuery,$i)] = $obResult[$i];
		}
		array_push($resultArray,$arrCol);
	}
	
	mysql_close($objConnect);
	
	echo json_encode($resultArray);
?>

<?php
	/*** for Sample 
		$_POST["sMemberID"] = "1";
	*/

	$strMemberID = $_POST["sMemberID"];

	$objConnect = mysql_connect("localhost","root","root");
	$objDB = mysql_select_db("mydatabase");

	/*** Insert ***/
	$strSQL = "DELETE member 
		WHERE MemberID = '".$strMemberID."' ";

	$objQuery = mysql_query($strSQL);

	$arr = null;
	if(!$objQuery)
	{
		$arr["Status"] = "0";
		$arr["Message"] = "Delete Data Failed";
	}
	else
	{
		$arr["Status"] = "1";
		$arr["Message"] = "Delete Data Successfully";
	}
	
	echo json_encode($arr);
?>

//
//  ViewController.h
//  deleteDataServer
//
//  Created by Weerachai on 12/10/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController  <UITableViewDataSource,UITableViewDelegate>
{
    
    IBOutlet UITableView *myTable;
    
    IBOutlet UIBarButtonItem *itemEdit;
    
}

@property(nonatomic,assign) NSMutableData *receivedData;

- (IBAction)btnEdit:(id)sender;

@end

//
//  ViewController.m
//  deleteDataServer
//
//  Created by Weerachai on 12/10/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()
{
    BOOL boolDelete;
    
    NSMutableArray *myObject;
    
    // A dictionary object
    NSDictionary *dict;
    
    // Define keys
    NSString *memberid;
    NSString *name;
    NSString *tel;
    
    
    UIAlertView *loading;
    
    NSString *modeAction;
}

@end

@implementation ViewController

@synthesize receivedData;

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
    
    boolDelete = FALSE;
    
    
    // Define keys
    memberid = @"MemberID";
    name = @"Name";
    tel = @"Tel";
    
    // Create array to hold dictionaries
    myObject = [[NSMutableArray alloc] init];
    
    modeAction = @"LOAD";
    
    // for Load Data to List View
    if([modeAction isEqualToString:@"LOAD"] ){
        
        NSURLRequest *theRequest =
        [NSURLRequest requestWithURL:[NSURL URLWithString:@"https://www.thaicreate.com/url/getData.php"]
                 cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
                 timeoutInterval:10.0];
        
        NSURLConnection *theConnection =[[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
        
        // Loading...
        [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
        
        loading = [[UIAlertView alloc] initWithTitle:@"" message:@"Please Wait..." delegate:nil cancelButtonTitle:nil otherButtonTitles:nil];
        UIActivityIndicatorView *progress= [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(125, 50, 30, 30)];
        progress.activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhiteLarge;
        [loading addSubview:progress];
        [progress startAnimating];
        [progress release];
        [loading show];
        
        if (theConnection) {
            self.receivedData = nil;
        } else {
            UIAlertView *connectFailMessage = [[UIAlertView alloc] initWithTitle:@"NSURLConnection " message:@"Failed in viewDidLoad"  delegate: self   cancelButtonTitle:@"Ok" otherButtonTitles: nil];
            [connectFailMessage show];
            [connectFailMessage release];
        }
        
    }
    
}

- (IBAction)btnEdit:(id)sender {

    if(!boolDelete)
    {
        boolDelete = TRUE;
        [myTable setEditing:YES animated:YES];
        [itemEdit setTitle:@"Cancel"];
    }
    else
    {
        boolDelete = FALSE;
        [myTable setEditing:NO animated:YES];
        [itemEdit setTitle:@"Edit"];
    }
    
}

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
    receivedData = [[NSMutableData alloc] init];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
    sleep(2);
    [receivedData appendData:data];
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
    
    [connection release];
    [receivedData release];
    
    // inform the user
    UIAlertView *didFailWithErrorMessage = [[UIAlertView alloc] initWithTitle: @"NSURLConnection " message: @"didFailWithError"  delegate: self cancelButtonTitle: @"Ok" otherButtonTitles: nil];
    [didFailWithErrorMessage show];
    [didFailWithErrorMessage release];
	
    //inform the user
    NSLog(@"Connection failed! Error - %@", [error localizedDescription]);
    
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    
    [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
    [loading dismissWithClickedButtonIndex:0 animated:YES];
    
    
    if(receivedData)
    {
        //NSLog(@"%@",receivedData);
        NSString *dataString = [[NSString alloc] initWithData:receivedData encoding:NSASCIIStringEncoding];
        NSLog(@" abc = %@",dataString);
        
        // for Load Data
        if([modeAction isEqualToString:@"LOAD"] ){
            
            id jsonObjects = [NSJSONSerialization JSONObjectWithData:receivedData options:NSJSONReadingMutableContainers error:nil];
            
            // values in foreach loop
            for (NSDictionary *dataDict in jsonObjects) {
                NSString *strMemberID = [dataDict objectForKey:@"MemberID"];
                NSString *strName = [dataDict objectForKey:@"Name"];
                NSString *strTel = [dataDict objectForKey:@"Tel"];
                
                dict = [NSDictionary dictionaryWithObjectsAndKeys:
                        strMemberID, memberid,
                        strName, name,
                        strTel, tel,
                        nil];
                [myObject addObject:dict];
            }
            
            // Reload Data
            [myTable reloadData];
        }
        
        // for Delete
        if([modeAction isEqualToString:@"DELETE"] ){
            
            // Return Status E.g : { "Status":"1", "Message":"Delete Data Successfully" }
            // 0 = Error
            // 1 = Completed
            
            id jsonObjects = [NSJSONSerialization JSONObjectWithData:receivedData options:NSJSONReadingMutableContainers error:nil];
            
            // value in key name
            NSString *strStatus = [jsonObjects objectForKey:@"Status"];
            NSString *strMessage = [jsonObjects objectForKey:@"Message"];
            NSLog(@"Status = %@",strStatus);
            NSLog(@"Message = %@",strMessage);
            
            // Completed
            if( [strStatus isEqualToString:@"1"] ){
                UIAlertView *completed =[[UIAlertView alloc]
                                         initWithTitle:@": -) Completed!"
                                         message:strMessage delegate:self
                                         cancelButtonTitle:@"OK" otherButtonTitles: nil];
                [completed show];
            }
            else // Error
            {
                UIAlertView *error =[[UIAlertView alloc]
                                     initWithTitle:@": ( Error!"
                                     message:strMessage delegate:self
                                     cancelButtonTitle:@"OK" otherButtonTitles: nil];
                [error show];
            }
            
            // Reload Data After Delete
            [myTable reloadData];
            
            // Hide Delete
            [myTable setEditing:NO animated:YES];
            
        }
        
    }
    
    // release the connection, and the data object
    [connection release];
    [receivedData release];
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    
    int nbCount = [myObject count];
    if (nbCount == 0)
    {
        return 1;
    }
    else
    {
        return [myObject count];
    }
    
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    
    static NSString *CellIdentifier = @"Cell";
    
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        // Use the default cell style.
        cell = [[[UITableViewCell alloc] initWithStyle : UITableViewCellStyleSubtitle
                                       reuseIdentifier : CellIdentifier] autorelease];
    }
    
    int nbCount = [myObject count];
    if (nbCount ==0)
    {
        cell.textLabel.text = @"";
        cell.detailTextLabel.text = @"";
    }
    else
    {
        NSDictionary *tmpDict = [myObject objectAtIndex:indexPath.row];
        
        // MemberID
        NSMutableString *text;
        text = [NSString stringWithFormat:@"MemberID : %@",[tmpDict objectForKey:memberid]];
        
        // Name & Tel
        NSMutableString *detail;
        detail = [NSString stringWithFormat:@"Name : %@ , Tel : %@"
                  ,[tmpDict objectForKey:name]
                  ,[tmpDict objectForKey:tel]];
        
        cell.textLabel.text = text;
        cell.detailTextLabel.text= detail;
        
        //[tmpDict objectForKey:memberid]
        //[tmpDict objectForKey:name]
        //[tmpDict objectForKey:tel]
    }
    return cell;
}

- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
    // Return YES if you want the specified item to be editable.
    return YES;
}

// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
    
    // to Delete
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        //[myObject removeObjectAtIndex:indexPath.row];
        //[tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
        
        modeAction = @"DELETE";
        
        if([modeAction isEqualToString:@"DELETE"] ){
            
            // Get Index Delete
            NSDictionary *tmpDict = [myObject objectAtIndex:indexPath.row];
            
            //sMemberID=1
            NSMutableString *post = [NSString stringWithFormat:@"sMemberID=%@",[tmpDict objectForKey:memberid]];
            
            NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
            NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
            
            NSURL *url = [NSURL URLWithString:@"https://www.thaicreate.com/url/deleteData.php"];
            NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
                            cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
                            timeoutInterval:10.0];
            [request setHTTPMethod:@"POST"];
            [request setValue:postLength forHTTPHeaderField:@"Content-Length"];
            [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
            [request setHTTPBody:postData];
            
            NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:request delegate:self];
            
            // Loading...
            [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
            
            loading = [[UIAlertView alloc] initWithTitle:@"" message:@"Deleting..." delegate:nil cancelButtonTitle:nil otherButtonTitles:nil];
            UIActivityIndicatorView *progress= [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(125, 50, 30, 30)];
            progress.activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhiteLarge;
            [loading addSubview:progress];
            [progress startAnimating];
            [progress release];
            [loading show];
            
            // Delete Object Row
            [myObject removeObjectAtIndex:indexPath.row];
            
            if (theConnection) {
                self.receivedData = nil;
            } else {
                UIAlertView *connectFailMessage = [[UIAlertView alloc] initWithTitle:@"NSURLConnection " message:@"Failed in viewDidLoad"  delegate: self cancelButtonTitle:@"Ok" otherButtonTitles: nil];
                [connectFailMessage show];
                [connectFailMessage release];
            }
            
        }
        
    }
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)dealloc {
    [myTable release];
    [itemEdit release];
    [super dealloc];
}

@end