getParamFromURL

+ (NSDictionary*)getParamFromURL:(NSString*)str
{
//    NSString *str = @"http://103.13.128.149:81/SisticWebApp/mobile_securecode_response.jsp?vpc_3DSECI=05&vpc_3DSXID=prdWs3qHUCo1fb8fu8Fz52vJvnY%3D&vpc_3DSenrolled=Y&vpc_3DSstatus=Y&vpc_Amount=129800&vpc_BatchNo=0&vpc_Command=pay&vpc_Locale=en&vpc_MerchTxnRef=20130527101537mtr&vpc_Merchant=DBS90000011A&vpc_Message=Approved&vpc_OrderInfo=20130527101537oi&vpc_SecureHash=D4555323FC2025A0101B2A667416D953&vpc_TransactionNo=0&vpc_TxnResponseCode=0&vpc_VerSecurityLevel=05&vpc_VerStatus=Y&vpc_VerToken=AAABBjGWZEZyFjE3EJZkAAAAAAA%3D&vpc_VerType=3DS&vpc_Version=1";
    
    NSMutableDictionary *params = [[NSMutableDictionary alloc] init];
    NSString *url=str;
    NSArray *comp1 = [url componentsSeparatedByString:@"?"];
    NSString *query = [comp1 lastObject];
    NSArray *queryElements = [query componentsSeparatedByString:@"&"];
    for (NSString *element in queryElements) {
        NSArray *keyVal = [element componentsSeparatedByString:@"="];
        if (keyVal.count > 0) {
            NSString *variableKey = [keyVal objectAtIndex:0];
            NSString *value = (keyVal.count == 2) ? [keyVal lastObject] : nil;
            NSLog(@"%@ -> %@",variableKey,value);
            [params setValue:value forKey:variableKey];
        }
    }
    
    return [params copy];
}