I want to create an app that allows a user to find the nearby other users location using GPS coordinates who are Logged in to the same app .Also it can be track the location of the devices(Logged in to the same app) which are moving in a car .
Can someone give me an overview of how I can accomplish this. is there any free API available to accomplish this task.
Danielbeard is correct - you would need to be continually storing/updating locations on a server somewhere. Your app does get some running time when it is in the background, but I'm not sure it would be enough to run the web traffic that you'd need.
Check out this post: Running app in background and send frequent http request
And check out the multitasking guide here: Multitasking Guidelines
You can also look at Push Notifications. Hopefully this helps.
In iOS7 MultiPeerConnectivity was introduced to find near by applications, so if you have a coffee shop and someone walks by or in they could get the latest deals, or, you walk into a room and the music changes to what you like as your device exchanges information with another.
http://nshipster.com/multipeer-connectivity/
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I am thinking to make my own app like Find My iPhone app . But I am confused that whether apple allow developers to have access to play with the security or is there such Apple API's that can help us to include features as in the above app. Any suggestions?
Well I just can't comment because of low reputation. But people must give a reason to down-grade a question. Its quite a valid question.
Creating an app like this is semi possible. Due to the fact that you are not allowed to keep running in the background, except for certain special cases. Such as Music or a guidance app (navigation apps)
Your app can register to receive updates from the GPS location and process them.
The problem is it will use your gps all the time.
The find my iphone app is a combination of wifi location/sim card location/gps location.
It uses a combination of all these items which it has to keep track of your location as close as possible. Now back to your question, the fact that you cannot keep running in the background, will mean the app needs to stay open all the time (open I mean running, not necessarily onscreen). Not like the application from apple itself, which of course is allowed to go outside these developer restrictions.
The APIs exist for you to create the main functionality of this app. Core Location and APNS
When use A is looking for the location of user B, A would tell a server that it needs user B's location.
A push notification could fire up user B's app, at which point...
User B's location services would kick in, in the background,
Send this information to your server
Then update user A with another push notification.
Am developing application for calculate count of user moved steps and draw the user activities in the map. And we are using UIAccelerometer delegate for receive acceleration-related data from the onboard hardware. So I need to receive acceleration-related data when the application in background mode too. Last time one of my application got rejected because of using location service in background, Apple suggested me like "you can only use this background mode if your app truly needs this information to provide value for the user". Kindly suggest the best approach for this application.
You cannot run accelerometer in background.
You can track user's location in background... however, if you just keep tracking it and do nothing with that info.. apple is going to reject it and tell you to just get the lates location when app comes to foreground.
what you can try is.. update the user of total distance covered etc on a regular basis (like run keeper) and this will justify tracking location in background.
But first, you can try appealing to the review board explaining that you need to track location in background because you show entire route travelled by user when app comes to foregraound. and compare this to existing apps like run keeper and if you are lucky apple may approve your application without any changes...
This can easily be done.
What happens in that iOS put your application in halt state when your application is not in running in foreground state.
You just need to register your application for background execution.
Refer :
http://dcraziee.wordpress.com/2013/05/20/background_ios/
Also refer :
iOS background application network access
for apple policies about using location service.Which states that you can use location service in background.
I am new to iphone development.I want to know that is there a framework or method to get the gps location of another iphone if the application is installed in both the iphone.
If there is any method can u please help me to sort out this
thanks in advance?
I agree with James, thank god it is not open in that anyone can see where anyone is via a single method, but I did create a solution that does this as a test app and it was not to difficult.
The frameworks that I used are Core Location to get the GPS coordinates, Foundation Framework to share the information with a web service using NSURLConnection, MapKit to map the coordinates, and the open source SBJson encoder/decoder.
I then created a PHP web service that enabled users of the app to register and choose who they would share their location with.
Then once per minute each instance of the app that is active would send its coordinates to the web service and then download any coordinates of other devices that it is allowed to see.
If I published this app, I would probably provide an option to chose the update frequency to conserve battery life.
Two free apps that also do this, that were created by Apple, are the Find Friends and Find iPhone apps.
If you are interested in creating something like this, check out the LocateMe sample code at developer.apple.com.
I need to know if this is possible. I want to develop an iPhone app that uses facebook credential to login (this is possible i know) and the create an event (like a dinner) and invite friends from facebook. When the time for the event comes (like 15-20 minutes before the start time) all the users that are attending the event can see how far are the others participants to this event using GPS (Core Location lookups) and see on a map as they move towards the place of the event
Yes. Everything you have described in your question is possible.
However, iPhone doesn't allow things like that to run in the background - your app would only work if each guest had the app open as they were travelling towards the event. The app would then update a server somewhere with their locations.
You might be able to do this with a notification that told them to open the app 10 minutes before the event started?
Android allows background tasks so you might want to write this for Android devices first and then make an iPhone version later?
I was wondering if it was possible to get the location of the iPhone with an app that isnt running, or at least running in the background. What I want to do is have the iPhone send a push notification when it arrives at a certain coordinate. Is this possible? If so, could someone put me in the right direction?
Thanks,
Ben
Yes, it is possible. Your application can ask to be notified of significant location changes or to simply continue using the GPS while executing in the background. The former—the approach recommended by Apple—uses less power at the cost of accuracy (this blog post indicates that the updates are accurate to roughly 500m), while the latter is as accurate as the device can manage. This is all detailed in the iOS Application Programming Guide and and the Location Awareness Programming Guide.
If you simply want your application to be notified when the device moves into a particular region, you may want to look into CLLocationManager's startMonitoringForRegion:desiredAccuracy:. If the device moves into a particular geographical region, your app is launched (even if it's not running!).