Users log into my app through the facebook sdk. If one user clicks on another user I'd like to enable them to chat via facebook messenger. I can launch messenger from my app, but is there a way to launch into the chat screen with a specific user.
You can open a conversation in Messenger with deep links:
http://m.me/{user_name} <- this is official link for Messenger. You'll need to ask user for his Messenger's username.
fb-messenger://user/{user_id} <- this link is not documented, so it can break any time (Deep linking). user_id probably is the Facebook User Id, so it will be easier to obtain, however you'll need to ask for user_profile permission to get user id (Messenger Permissions)
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I'm trying to hide the Facebook customer chat plugin when the user is not logged in into Facebook.
I've looked at the API here https://developers.facebook.com/docs/messenger-platform/discovery/customer-chat-plugin/
But this method doesn't seem to exist. However I can change the message If the user is not logged in.
Can I somehow listen to that and then hide it?
I am creating an app with Node.js express to display social media feeds using their API. I am using FACEBOOK, TWITTER, INSTAGRAM. When I click on any social media icon, a popup window is appearing to login. After logging in all of them. I clicked a button to display feeds. This is working good for single account. Now I want to login multiple account for every social media. But whenever I clicked another social media icon to login .I saw there is already logged in.
For example I click Facebook icon to login . After appearing model window I fill up my username(jrajput315) and password. After logging in this account, I want to login some other Facebook account. And I click Facebook icon to login again. But I see (jrajput315) is already logged in there.
Since you are already logged in to Facebook from one account, Facebook uses a sign-in cookie to keep you logged in. Until this cookie is flushed out, you cannot login through another facebook account on the same browser in the same session.
I guess similar practice happens with few other web-apps, if I am not mistaken.
My app was rejected by Apple because "Login via Facebook" opens the Safari app, because I am using UIWebView for Facebook login, which is working fine. I am getting the access token as well.
The problem is I also need user information like user ID, email ID, user name etc. because I need to save it on my server.
How do I get the logged-in user's info when I have the access token?
Have you read the FB iOS documentation?
https://developers.facebook.com/docs/reference/ios/current/
There is an API called FBRequest which can retrieve various information or the Graph API can be used to obtain stuff.
How to integrate FB login with an iOS app is fully documented with example projects.
i want to develop an android app using youtube API 3.
It is necessary that the user who will be using the app has to login with his/her gmail credentials to actually view a video?
Or just registering the app here https://developers.google.com/youtube/registering_an_application is fine and the user watching the video or using the app need not login to his/her gmail account.
It is necessary that the user who will be using the app has to login with his/her gmail credentials to actually view a video?
No. Authentication via OAuth is only necessary if your application requires access to "private user data". Simply viewing a video does not meet those requirements.
More details here: https://developers.google.com/youtube/v3/guides/authentication
Is there any way to access the Facebook UID for a user that clicks on a marketplace ad that is created using the Ad API without app authentication via Open Graph?
No. They have to authenticate your app before you have a chance to see their UID. If you could get their UIDs, you could spam them and Facebook doesn't want this.