Is there an easier way to check who has installed my app using the Google plus API? I am listing out friends list where I would like to show the user if the his/her friends are using the app if not invite them?
As of now, I am getting the unique ID from the friends list and checking in backend with a database if the user is present or not.
Can somebody let me know what could be the best way to achieve this?
The people.list API method supports a collection value of connected.
The list of visible people in the authenticated user's circles who also use the requesting app. This list is limited to users who made their app activities visible to the authenticated user.
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I want to get a user id / Google id from a app user without Google sign in. Is it possible to identify a user without authentication?
I want to sync data between devices without a login.
Thank you for any tips like classes or anything else.
Is it possible to identify a user without authentication?
No. Identifying a user is basically the literal definition of "authentication". It's like asking if you can get wet without using a liquid.
Im working on a project where a user isn´t forced to sign up a account.
My plan is that a user could do anything like a user that is registered except for a few exceptions.
I implement a like function which saves the users behaviour on a webserver and later when the data is fetched again it recognized if the user liked something or not. My problem is that I have to save this informations also if the user isn´t registered to my application. A User should be free to decide wheter the user likes to sign up or not and isn´t forced to be a registered user.
I found three different way that could work!
1. Option
First option would be the accountmanager but I don´t like this option at all cause I have to ask for the contact permission and also ask which account a user want to use.
2. Option
A other option would be if a user starts the app for the very first time the app would call a server which creates a random unique code and send that code to my application to save it as key for the users actions which is saved on a server. But that also doesn´t seems to be a good solution for my problem.
3. Option
The last option would be oauth but for now I don´t know if and how it would be the solution to my problem!
I would be thankful for every answer!
I have worked on a comic app that requires saving the user subscribed channels, genre or comics and save the likes/dislikes for the same. User can be subscribed to push notification too.
For this, we used Firebase Authentication (anonymous signup). And to save the user subscription information, we used Firebase Firestore.
And followed the below approach.
As soon as the app opens, check if the user has already anonymous SignIn. If it hasn't, signUp silently.
Add a listener for user push notification token change. And update it to Firestore by anonymous user-id as key (We did same for storing other information too).
I think this approach would help to solve this problem.
You could use firebase auth for that!
Usually, you would use it with email & password or google login but it also has an anonymous login feature that should save the user's phone.
There are few techniques. It depends on whether you want to recognise a user between installations of app. If you are OK to lose a user on reinstallation you can use Firebase installation ID and link users behaviour with this id. If you want to remember users even between installations you can use unique to each combination of app-signing key, user, and device Secure.ANDROID_ID(more info about ids). But still the best way is implementing your own signing in or using of AccountManager.
Im developing an android application for the first time (no prior experience whit coding....). Mainly the app is going to be used at work as a tool for service technicians. The app is almost ready for field testing, but there is one thing i need the app to do before that. I need the app to force the user to log in every time its opened. This is because some of the info on the app is confidential, and only people that currently works for the company is allowed to have this info. Whit firebase i can then block the users that leave the company, or users that are not verified. Currently the users sign in whit google and they stay signed in until they clear the app data or delete it.
I have looked far and wide for the answer to this, but i have only come across different use of timers.
If anyone has a better solution to this "safety" issue, im open to anything.
If you are using Google Sign-In for authentication, there is no out of the box support for forcing your user to authenticate with Google every time they use your app.
This makes sense, because the user is still authed with Google on your phone. A login system only authenticates the user; it doesn't inherently protect data stored on the device. As long as Google has a valid access token, the user won't have to type a username and password again (and simply clicking "login with Google" again doesn't really provide extra protection here).
If your primary concern is blocking access to users who have left the company, you should be covered if you are using Google Apps for your company. If you disable the user's account, their access tokens should become invalid. Google Apps admins can also manually revoke access to specific apps for specific users.
If you don't use Google Apps (e.g. your users are using #gmail.com accounts or accounts from a domain outside fo your control), you might want to consider implementing a list of users allowed to access the application, and verify the current user has access by checking that list via an API call on launch.
If the goal is really protecting the confidential information in the application, you might want to take an approach similar to Android Pay in which you require your user to set and enter a PIN number to access the application. As an added benefit, you can then use that PIN to encrypt any confidential data you are storing locally.
I will suggest you take a look into shared preferences and every time when the user is back into the app you send them to the login activity.
My app presents the device contact list for the user to select a contact. However, I do not see the device login - the name & email used to sign in to the android store - in the contact list.
I've read other posts showing how I can get the device login from the system profile. However, I'm trying to understand what prevents or allows that login info from getting added to the gmail account contacts list.
Ultimately, I want to use this info for the user to register his usage of my app. With that, I intend to receive the user's name and email address (with his permission, of course). Perhaps there's a better way to approach what I want.
That account used to login to the device is the user's account. The contact list you are talking about are the user's contacts. If I were the user, I think it would be odd to have myself listed as one of my contacts...
It sounds like you already know how to get the information you want. I don't believe there's a "better" approach than simply doing that. You need to be more clear on why that is not a good approach or what about that approach needs to be improved.
I develop mobile cross-platform games (for iOS,Android and WP).
I want to know the email or the phone number of the people who bought my app from the iOS,Android or WP store, for using these informations for authentication purpose.
Waiting for your valuable comments and sugessions
Thanks.
You don't have that information unless people authorize you or give it to you.
Under no circumstances should you be able to get the information of the people who are buying your apps unless they opt into it and it’s made crystal clear to them that you are getting this information.
This was in the news last year because you shouldn't have that data.
This counts for iOS and Android.
options
Ask users for their personal information in the app and send it to
your servers.
Make your app need registration and login ( This is very strict on iOS, make sure you have some kind of offerable service which actually need registration)
You can link their personal information with device numbers, but these are spoofable on rooted and jailbroken devices
To get the device information on android:
You want to call android.telephony.TelephonyManager.getDeviceId().
This will return whatever string uniquely identifies the device (IMEI on GSM, MEID for CDMA).
You'll need the
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
permission to do this.
On iOS look at this answer: How to get IMEI on iPhone?
I can only speak for iOS:
You can't get email address nor phone number using iOS APIs. If you want this, you need to ask the user yourself.
Then you'd need a way to verify them:
Email by sending a link they need to click.
Phone number by sending the user an SMS (with link they need to click, or code they need to type in UI), or by calling them and asking them to dial/DTMF a code they see in the app, or on the app enter a code they hear.
If you want to keep users apart, without needing any info from them:
Have a non-consumable in-app payment item (which you could call 'account' for example). Since these items can only be bought once per user, and because Apple's in-app purchase receipt contains a unique ID, you can use this as a user identifier. (If this does not make sense, you need to read Apple's documentation about in-app purchases.)
If you are asking the user for mail/no then just store temperorly and use webservice to retrive in background
If you want the details without knowing to user Use analytics and catch maild id's of user (flurry , google analytics)
I dont think this is possible currently. The playstore console displays information like number of download, carriers, devices, etc. You may want to consider building in those features and requesting the info from the user via the valid permissions. Aside there is an unofficial playstore API that lets you pull data viz. app info, comments, etc. You can find it here