How can I import contacts from gmail to iPhone application? - iphone

I have an app in which I need to fetch my friend's gmail id into my iPhone app. How can I import contacts from gmail to my iPhone application?

You can read the Google Contacts API for more information
http://code.google.com/apis/contacts/

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How to get a vCard (.vcf file) into Android or ios contacts from website

How to add or import vcard file contacts into android and ios phone contacts app from website directly???
Thanks in advance...

Invite user to install an iOS App using Facebook sdk without FBWebDialogs

I have an iOS Bussiness app, which used Facebook to login. Now I have access to the friends list. Is there a way to send a request to a Facebook friend (who is currently not using app) to install my App. My app is Bussiness app category not the game.
this site shows all the information that you want:
https://developers.facebook.com/docs/games/invitable-friends/v2.2

Importing gmail contacts into iOS application

Is there any sample code to import the gmail contacts into iOS application? I have gone through the sample codes with the API but I didn't find any thing to import the contacts.
Any help will be appreciated.
Not sure about SDK,
but you need to implement google oAuth Protocol to importing contact from a user's gmail account.
check this good oAuth Library

how to fetch my Gmail contacts into my iPhone App

I have an app in which I need to fetch my friends gmail id to my Iphone app.how to import contacts from gmail to iphone application? But i don't Know how to do this . Can any one give any example for this.
Any help would be appreciated..
Use GData for objective-c;
http://code.google.com/p/gdata-objectivec-client/wiki/GDataObjCIntroduction
you need to do a read-only checkout from google code, the command is "svn checkout gdata-objectivec-client.googlecode.com/svn/trunk gdata-objectivec-client-read-only" see code.google.com/p/gdata-objectivec-client/source/checkout

Get iPhone address book contacts into a mobile web app?

Is it possible to get iPhone address book/contacts into a mobile web app? Yes/No, how?
There is no API in JavaScript to fetch the address book content in Mobile Web application BUT the PhoneGap have made it available through the plugins So they have exposed the Phone Contact list through Contact JS class,
Follow the below link to play with phone Contact list .
PhoneGap Contact Documentation