I have a web app that has standard user model information. I am building an iPhone app to communicate with the endpoints in my current web app to authenticate the user and all the actions he/she can do. What is the standard approach for this? OAuth?
Use a UIWebView or use ASIHTTPRequest.
Create a webservice on top of the web app.. MAke iphone app comunicate through that webservice by parsing the data... And the easiest way to parse is by using this library.. http://sudzc.com/
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I am making an API in NodeJS that 'll be used by a website and iPhone native app at the same time.
It is supposed to authorize user using LinkedIn API. How can I do that with NodeJS API when iPhone native app is working on other end.
Take a look at passportjs.org
You should be able to do what you need with this library.
I'd like to build a web application which allow iPhone users to save a short memo as a todo list on the web server. The user must logon on Facebook on the iPhone before submitting a memo.
On the server side, how can I tell whether the iPhone user has logon on Facebook or not?
In a native app, FBConnect can be used to establish trust between the app and Facebook. (FBConnect calls an fbDidLogin delegate method).
It's up to you to establish trust between your iPhone app and your web service, but once you have, the app can report the FB login state along with it's requests.
Assuming you're just building a web application, I don't understand why it would be different then building a normal web application that uses fbconnect and graph api. You just happen to design it to fit a mobile browser. There's a section on authentication.
I'm designing an iPhone/android app which needs user to login using his/her facebook account.
The app uses GAE (Google App Engine) as the background server, so the problem now is that I don't know how GAE, iPhone and Facebook authentication works.
My guess is user login FB from iPhone and will get an access_token, and then the iphone app sends the access_token to GAE so that GAE can recognize the user.
Is that correct? Or is there any tutorial about how to cooperate between these platforms?
Thanks!
Take a look at the LeanEngine open source project. It was designed to do exactly what you are trying to do - login from a mobile device to GAE with Facebook or OpenID account (and sync data between the client and GAE).
It consists of a preprogrammed GAE application and libraries for Android and iOS and if you are satisfied with the built-in functionality you really do not need to do any modifications to the server part. You can just use it as it is.
I want to access TTS (Text-To-Speech) and STT (Speech-To-Text) functionality of iOS from web app. Since web app dont access ios device functions, is it possible to launch Native app from Web app?
e.g. When user wants to access TTS (e.g. Dragon Dictation), web page will launch Native app, take recording and send the recorded text to web app again.
Or we can access TTS/STT functionality right from web app?
The only native apps you can access from web apps are those with custom URL schemes set up, and the built-in ones e.g. SMS (sms://), phone (tel://), iTunes (itms://) and YouTube (http://youtube.com/watch?...).
If the apps you mention don't have their own custom URL schemes which you can use to get to them, there's no other way you can do this.
I can answer one part of your question - using the functionality of an IOS native app from a web-app;
Apps can be developed such that they respond to custom URL schemes - like, for example, the mail app responds to mailto:// and youtube responds to youtube://. Calling a URL with one of these schemes will start the IOS app - but it's entirely on the developer to code this into their application.
You could therefore in theory develop an app to get triggered from a web-app, perform an action then return to a web app after! Probably not something I would try and do though.
Is there a mechanism to use Facebook Connect to authenticate via a custom developed iPhone application? Would that require embedding WebKit as a browser and using the authentication there?
Here is the official library for it.
http://wiki.developers.facebook.com/index.php/Facebook_Connect_for_iPhone
edit https://developers.facebook.com/docs/guides/mobile/#ios