Develop Reference

Making a Google sign in plugin for Unity

So I'm trying to get a google sign in working for Unity
I'm stuck however.
I'm trying to convert an example into a Android library, which would call the sign in intent.
I've tried searching but with no leads.
This shows that you need to extract all the extra libraries and add them to your unity project, seems like a good lead.
If anyone has done it, could you point me in the right direction?

You can use Firebase Authentication for Unity to add Google sign-in. It's easy to implement with examples on their page, and you can also add Facebook, email, and other other sign-in services. I highly recommend trying out some of their other products like Analytics too.

Google Chrome push notification - Java

I am interested to enable google push notification for my web application in Chrome. I want to use Java as primary programming language. I tried to look at many examples but I didn't get caught of any information which helps me. Can anyone please let me know how to start with?
Regards,
Rakesh

I would start by looking at the notification API. It is much simpler to use. To find examples of the I would direct you to Youtube with the exact same question. The Rich Notification is a very complex system, but google also but out a few videos on how to use them.

Android Studio creating tabs for a app , beginner

I am currently working on a project and I want to make different tabs. Like the app flipboard
I am making my app in android studio and I am done with the "home page", but I don't know how to make a new tab.
I also want to make like a sign in page for when people first open the app like facebook.
For lasst I also want it to have google maps in it.
But I don't know how to do that either.
So my question is how do you do that or is there a book / website where you can get all the information about this and android studio in general.

Your question is too broad and I don't think anyone is going to write up the code for you. A simple google search has given me this:
For Facebook login, implement Facebook SDK:
https://developers.facebook.com/docs/android/getting-started
Google Maps:
https://developers.google.com/maps/documentation/android-api/?hl=en
Google's SDKs also support user login, which you could use together with Facebook.
For "creating new tabs", apparently I can't post more than two links in my post since I don't have enough reputation, but google "android how to make new activity".

For the Tabs you can use the Android Action Bar:
Tutorial
For the Map you can use the Google Maps API, its easy to understand ;)
Google Maps

I am using this guide based on SlidingTabLayout . And i think it will help you perfectly .

How to use quickblox for web

I want to use quickblox for chat. I want to use quickblox rest api. But I don't understand how can I achieve this.
I tried to follow the tutorial given in http://quickblox.com/developers/Javascript
But I am not able to understand how to configure this

Why are you not use JavaScript SDK for web?
I suggest you to use JavaScript SDK for real time chat application and documentation is also very good for JavaScript SDK
Go thought this link:"https://quickblox.com/developers/Javascript"
Hope this help you.

Use JavaScript Library in Android Application

I want to use the SJCL library in an Android app that I'm building. The thing is SJCL is a javascript crypto library. I'm new to Android development and I was wondering how I could go about using the library in my project.
What I'm looking to do is hash a person's username and password and decrypt whatever response I get from the server which is why I want to use SJCL. If anyone has any insight into how to do this, that'd be great!

I think that only way it can be done is WebView.
Maybe this will give you some lead.
Android WebView Javascript from assets

To achieve your goal, you can use this library for running JavaScript in Android apps.