I'm a beginner learning android app development.
I have a requirement for a user to be able to Read messages (just the body content - text only) from a Gmail account (Read-only mail extraction?) and save the email content within the app.
I don't need to retrieve messages when the user is not actively using the app.
The app and SQLite database I am building sits on the phones internal local storage. I do not have a backend server.
I have looked at the Gmail API tutorial here: https://developers.google.com/gmail/api/guides/
As I understand, I need to use the Gmail API and ensure that a user of my app can authenticate as a Gmail user.
Is anyone able to advise:
1) if this is feasible to do without a back end server?
2) any tutorials as to how to approach this, or would you recommend just working through the material I listed above?
3) (I understand this is highly subjective) how substantial a task this is to undertake for a learner (This is an educational project, so I am limited by time - if it takes me more than 3-4 days I will run out of time!) An idea as to how long it might take someone who is experienced would help me to grasp the scale of the task.
Google uses Oauth2 to authenticate and track applications connected with a user's account. You will need to get a security key for app from google. Because you do not have server, you will want to get a client only key and not the service key. You can get the client key by going to the Google API Console. For help about how to let the user sign-in to their account you can look at this Android tutorials here. After you get the google sign-in working you can continue on to getting the Gmail messages.
It may seem like a complicated process, but you should be able to have in working in a short amount of time if you go through the tutorials on Google's developer's site. I got a similar app working in only about an hour. To add a nice user interface will take longer, but thats up to you.
Related
I'm a bit confused on how I can implement a user system into my application.
For a small overview, the mobile application needs to allow users to login or register, follow other users, and favorite/like items.
I've checkout out the documentation on Google Cloud Platform for implementing User Auth:
https://developers.google.com/identity/protocols/OpenIDConnect
https://cloud.google.com/appengine/docs/standard/java/users/
https://cloud.google.com/appengine/docs/standard/java/oauth/
I've used Parse in the past, and would expect the Firebase User Auth system to offer a similar experience, however due to Firebase conflicts with App Engine, that route is a no-go.
I understand there is also the User API, which can be used for things like restricting Cloud Endpoints calls to logged in users.
How can I roll a user auth system for my application? The best solution that comes to mind would be to just store user emails and passwords in Google Cloud Datastore, and check if the combination exists when a user logs in. However, I'm fairly unfamiliar with creating user systems and this seems like it would come with some sort of security issues.
you can use Firebase Authentication with Google App Engine. Your information that you have to use manual scaling instance is not correct. This was a bug and were fixed. Please see the following post for more informations
Verify Firebase Token at Google App Engine
I posted a question here 8 days ago with no reply. I'll try to ask better:
I'm trying to integrate a Gmail login feature into my desktop java program. Upon the very first launch, the user will be required to login/create an account. The option to "remember me" should be available afterwards. Users need to login so that the app can search their inbox for emails containing attachments, and then download one or more attachments. No emails are ever sent.
OAuth 2.0 seems like a reliable API, but I'm confused about 3 things:
1) Pricing: The link here seems to mention there's no charge for the OAuto 2.0 API, regardless of whether it's used for commercial purposes or not. Do you know if this is correct or how I can verify it?
2) Legality: Is it legal to make money from software that uses Google's OAuth 2.0 API? Like I said, the app will only be logging into a user's email to download an attachment from a particular email.
3) Implemenation: Is the OAuth API the most reliable/efficient method? My rationale was to allow Google to handle the privacy and security issues so to avoid storing encrypted login data on user's PC. This is what I'm aiming for visually:
I have an app that provides initial login (authentication) with facebook or twitter.
I would like to add WeChat authentication.
App isn't on the stores yet.
Does anyone have any experience on this kind of authentication?
What are the steps to achieve it?
I'm so confused by wechat documentation because seems have two versions:
one used to send messages;
another one, seems, that grants authenticated API (chinese documentation only?);
I think that a guide on SO is missing and can help a lot of people considering that documentation is not too clear.
Problem is that I cannot register my app:
if I use 'developers.wechat.com' I can't create app because of this bug.
if I use 'https://open.weixin.qq.com/' I can't create my account because a chinese phone number is required.
So?
I have a web base email client that uses a java app to connect to IMAP and POP3 servers to download email. There is an issue that if a user usually logs in form the US that the java app will not have access to collect emails until that user logs in from the same county the java app is running.
I was told to overcome this to use google oAuth in order for the account user to give permission to my app to collect emails. Is this correct? Once this has been accomplished I would also like to the the API to import contacts, but for now authorization/authentication is sufficient.
The problem I am facing is that after trying to make heads a or tails of the google oAuth api documentation im really confused and did not yet manage to make a working example. Documentation often has links to a depreciated API and there is no example with a dowload link to both the API needed and exaple source code, as a result I think im using incorrect libraries for my examples.
Its also not clear to me what/how to accomplish what is needed do I use client authentication via javascript to create a popup whereby the user grants access?
Or do I use installed app client with a token and secret, this is what I tried but the 'command line' example I tried requires Java EE and this is a native app so I dont see why and I dont want to import all Java EE libraries to my small email downloader app.
Where can I find more intuitive documentation and working examples on this?
If you stay away from OpenID 2 and OAuth 1, I think the docs are pretty orderly these days. The best place to start is https://developers.google.com/accounts/docs/OAuth2
Hi I am developing an Android App where I require a user to authenticate his session before using the app. One way is to store a user name and password by asking him to register on the app and then use that to authenticate him. But i was looking to do something else, maybe use an OpenId account to authenticate or Opensoial or something like Facebook Connect. Any Suggestions and comments? thanks for you help.
First, please do not whine about not getting answers after only an hour, particularly when it's Sunday in much of the world. If you want responses in less than an hour on a weekend, hire an expensive consultant.
Hi I am developing an Android App
where I require a user to authenticate
his session before using the app.
Why?
Any Suggestions and comments?
Most Android applications do not require authentication for local use. They may require authentication for access to online content (e.g., Web service), in which case the authentication is handled by the Web service and uses technology dictated by the Web service.
Bear in mind that any online authentication process (e.g., OAuth, Facebook Connect) means your application cannot be used in offline mode.
If your goal is to use authentication as some means of helping to combat piracy, you might consider using the new LVL system that Google released this week.