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I'm planning to develop an android app for GPS tracking. Actually I'm a beginner in mobile app back-end server. My requirement is to store lat and long value of a authenticated user in back-end. So I need user registration, storing and retrieving of lat and long values and a GUI is needed for admin to view all user details (like active users, number of registrations, lat and long values of particular user etc.).
How can I do this? I browsed and found some results like ruby, parse.com, Google App Engine. Which is the easiest and efficient technology for my above requirements.
Any help would be appreciated. Thanks.
I've personally been using Parse as a back-end for my apps and its been great. Also it's pretty easy to setup and use. Though this is a matter of opinion.
Take a look at Traccar, it's free and open source server for GPS tracking. It supports various protocols including some HTTP based ones (e.g. OsmAnd)
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Is there any way to get the total number of viewers of an activity in an android app? I searched, but the only thing I found was Google Analytics. but as far as I got, this API only shows the number of install uninstalls and some other features not the one that I want.
Appreciate your answers
From what I understand, you are trying to find how many users have visited an Activity in your app. The Google Analytics does give you that details. You can check the implementation here :
https://developers.google.com/analytics/devguides/collection/android/v4/screens#implementation
This is what you need.
Integrate Flurry Analytics in five minutes to get basic insights into
your users and app performance, or set up advanced analysis of complex
events to get a deep understanding of everything your users are doing.
From initial launch to the top of the charts, Flurry Analytics is free
at any scale and available for iOS, Android, Blackberry, Windows
Phone, and mobile web.
For more info:http://www.flurry.com/solutions/analytics
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I'm building an app with a friend, and even though we want our app to be free and without any advertising we would like to be able to receive some money from potential donners, how would I do that? is it possible to do it via the google dev app (I want it as simple as possible for the donor) or is the best way paypal?
thanks
The simplest way for the donor is of course to provide Google Play payment options.
The most popular way I've encountered for this kind of setup is to have two applications:
Free,
"Donate", which costs the amount of donation you wish to receive.
An alternative (simpler to manage, but may be less visible to your users depending on how you implement it) is to use In-App-Billing. That way you could just have one application with a "Donate" button.
IMPORTANT: this covers only the technical part of this problem, for the legal part, you'd have to consult a lawyer.
At least some countries impose a tax on donations in those kinds of cases, or require some additional paperwork to fill, so if you're unlucky or your app provides you significant income you could be hit by your tax revenue service (or even the police, if not filling paperwork breaks some criminal laws).
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I'm making my first backend for an app that should work for android and iphone. It should have features similar to instagram with some photos and text.
Currently I'm looking at doing it with google App engine.
For a backend like this, with users, posts, comments etc. Should I use the datastore option or SQL?
I know JAVA so using google app engine should be fairly simple. But is it simple to make it work with iOS too?
I'm open for suggestions if you think there are better places to do backends like something with node.js or so. It should be easy to deply, quick and expandable.
What would be your suggestions?
parse.com is the answer to all your problems
At work we use Drupal as a backend.
It's an easy to use CMS, It has secure RESTful connection for doing content management things. It has an iOS SDK https://github.com/workhabitinc/drupal-ios-sdk. It supports commenting, user registration, user permissions, posts out of the box.
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I am working on a project both on Android and IOS.
Basicly, user will take photos of an object, place, logo, painting, etc. Store it in the app database. Then when the user takes the photo of the same object again the app will be able to match and confirm that these images are from the same or similiar source.
I checked a lot of APIs, I would rather free software but one time affordable payment will also work. Most of the APIs want to get paid per image count in database or per times the app tried to match images. Plus most of them work with a cloud server where the images are matched in a huge database.
I do not want these, I want a simple matching algorithm that can work offline on mobile devices.
Any help will be appreciated.
I recommend you take a look at OpenCV. A lot of those services you mention are built on top of this or are similar. Since you only want offline mode this should work really well for you, although it will take more work on your end. You might want to start with the object detection tutorial, but there are tons of resources on OpenCV
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I'm building an app which needs to store moderate-to-large (10-100 GB) amounts of data online.
Does android provide any free service to do this?
The best option I am looking for is database storage. I want to be able to interrogate and insert data.
The second part of my question is about databases. Is it possible to have an online database that will allow multiple interrogation and possibly multiple insertions at the same time?
(of course, by "at the same time", I mean I want to have some synchronized piece of data, an user overwrites it, then after waiting for the first user to release it, the second user overwrites it. This waiting is done in background and no error is generated regarding the still-in-use file.)
Google App Engine probably integrates the best for android as well as gives you 1 gb free and then you can pay for how much you want. Google app-engine will also synchronize your read/write operations for you.
Read more: https://developers.google.com/appengine/docs/java/datastore/