Generally when using Android Emulator, if you are not under any proxy servers, then the device by itself finds the DNS server and connects to the Internet without any problems. The problem of connection raises only when you are under proxy servers. The major reasons why this happens is that, your device cannot find the ip address to which it must connect and what the DNS servers that are available for the connection. So you must update the device with these information.

While starting the emulator itself you can pass the dns servers and your http proxy server credentials as parameters to the 'emulator' start command. So the command looks likes this.

emulator -avd -dns-server -http-proxy -debug-proxy

So the real command may look like:

emulator -avd HVGA -dns-server 208.56.45.23, 209 .34.45.23 -http-proxy http://192.168.10.2:8080 -debug-all

HVGA is a example device name

In the place of  for dns servers, you can enter upto 4 dns server address separated by commas.

In the place of  you can use the ip address of your proxy with the Port number to connect to it.

If you got username and password to connect to your proxy server for authentication. You have got provision for that too. In the command you must pass your username and password as

-http-proxy http://username:password@192.168.10.2:8080

You can also pass -debug-all or -debug-proxy to get the error report of the connection.

If you are using Eclipse IDE for your development, then you need to supply this parameters in

Eclipse Preference -> Android -> Launch -> Default Launch Options.



That's it, now you can start your emulator and find Internet is connecting to it.

You can also set the proxy address and dns server details in your emulator by another way.

By default, Android SDK searches for the DNS server details from  resolv.conf file.

On Linux and OS X, the emulator obtains the DNS server addresses by parsing the file /etc/resolv.conf. On Windows, the emulator obtains the addresses by calling the GetNetworkParams() API. Note that this usually means that the emulator ignores the content of your "hosts" file. (/etc/hosts on Linux/OS X, %WINDOWS%/system32/HOSTS on Windows).

So first make sure that  resolv.conf file is present in the desired location, if not make a symbolic link of the fie to the location where the device searches for the resolv.conf file.

To find the present location of the resolv.con file use the following command.

locate resolv.conf

It will list few matched files, choose the one which you want. The contents of the resolv.cof file will be some thing like this.

#
# Mac OS X Notice
#
# This file is not used by the host name and address resolution
# or the DNS query routing mechanisms used by most processes on
# this Mac OS X system.
#
# This file is automatically generated.
#
domain TWOZAO
nameserver 203.145.184.32
nameserver 192.168.10.1

Make a symbolic link to this file from /etc.

ln /path/to/current/resolv.conf /etc/resolv.conf.

Now you made your emulator to find the DNS servers and you can set the proxy
address in your device, Go to Menu -> Settings -> Wireless & Network
Settings -> Mobile Networks -> Access Point Names.


There you can select the APNs and you can fill the proxy address and its port number, username and password there.
Please don't forget to post your comments.

  In this post I will show you how to fetch the you tube top rated videos just with built in PHP functions instead of using zend data api libraries.  Zend data api is the best and optimized way to do this task but rather than including and working with zend and zend data api you can just do this with php built-in functions by reading the you tube feeds for the top rated videos.

 So here we go.
General feed url of youtube is

http://gdata.youtube.com/feeds/api/standardfeeds/FEED_IDENTIFIER 

Youtube feeds URL for the top rated videos is
http://gdata.youtube.com/feeds/api/standardfeeds/top_rated

Here you can replace top_rated with




Fore more info regarding this

http://code.google.com/apis/youtube/2.0/developers_guide_php.html

So we have to read the feeds from the above url, then you can display it where ever you want.

We have the top rated videos as xml so we need to parse it using php function "simplexml_load_file() " .
To do this in php.ini we need to enable the url include option to On if it is not already turned on.

Get the feeds in a variable

                     $url="http://gdata.youtube.com/feeds/api/standardfeeds/top_rated";
                     $comments =simplexml_load_file($url); // Php built in function

So we have  top rated videos in $comments  , we need to parse it using foreach and display it in the following way.

 Here the feed is in yahoo feed format so you to mention the feed as yahoo and then you can parse the media group under entry tag.

      $media = $video->children('http://search.yahoo.com/mrss/');

So from this we can easily parse all the data from the youtube feeds.

Download the source for your reference.





You can also do all other functionality like searching a video or displaying particular video comments, recent videos and more using the above method. Its very easier than the zend data api. Try it out. Leave the comments if you have any problem

1. Introduction:

There are several payment modules in zen cart. You can find them under Admin > Modules > Payment in the admin panel. Many of them are for payment gateways where the customer's credit card is authorized automatically while they are online, and payment is deposited to your merchant bank account (which you set up with your bank) automatically.

Zen Cart as gateways built-in for:

1. Authorize.net AIM (SIM also supported, but AIM is recommended for its security benefits)

2. PayPal Website Payments Standard (IPN)

3. PayPal Express Checkout

4. PayPal Website Payments Pro

5. LinkPoint API

6. YourPay API

as well as:

C.O.D. - Cash On Delivery.
Check/MoneyOrder

2. File Structure:

Payment modules must contain two compulsory files.

1. The payment class is stored in

includes/modules/payment/.php

2. while all text is stored in the appropriate language file

includes/languages//modules/payment/.php

3. The response from the payment server is handled by the files

_response_handler.php

You can download the source of the sample Zen-Cart Payment Module

3. Anatomy of a Payment Module:

The payment class must override some of the following pre defined functions in zencart payment module. So a payment class must contain definitions for the following classes.

Constructor Method

In the Constructor method, the modules initialization must be done. Set the class code, title, description, sort order and status of the module.

update_status Method

This method will be called whenever the status of the module in the admin panel is changed. Here the currency type and zone of the shop can be checked each time of update.

javascript_validation Method

Validate the user input submitted on checkout_payment.php with javascript (client-side). Example: validate credit card number, make sure required fields are filled in

selection Method

This method can be overridden to retrieve required information from the form before submit. Example: ask for extra fields (credit card number), display extra information

pre_confirmation_check Method

This method will be called before processing the checkout confirmation page (i.e, on calling the checkout_process.php). Here check if credit card information is right before sending the info to the payment server

confirmation Method

In this method check for the products details and payment information and execute before displaying the checkout confirmation page

process_button Method

This is the main function, which sends the needed informations to the payment server on submitting the payment form. Examples: add extra hidden fields to the form that are required by the server as POST to perform the transaction.

before_process Method

This method will be executed before processing the order. Check all the parameters before forwarding to checkout confirm page. Examples: retrieve result from online payment services

after_process Method

After processing, the confirmation of checkout this method will be called.

after_order_create Method

This is the last step in processing the check out. Here the orders are taken and the items in the cart are removed to customer purchase table and the products table is updated and successful shopping mail is send to the customer and the store owner.

get_error Method

If an error occurs with the process, output error messages here

check Method

This method is called every time this module is accessed, to check whether the module is in active state.

install Method

If the ‘check method’ returns, status of the module as removed or uninstalled. A install button will be displayed in the admin panel. On clicking on the install() button this install method will be called. The zen cart configuration table will be updated with the information such as module code, title, description and other required parameters of the module.

remove Method

After installing the module, remove button will be displayed on top of the module in admin panel. On clicking on that remove button the rows related to this modules in the zen-cart configuration table will be removed.