Is there a way to get the Location (latitude, longitude) of an wifi access point? I need to display them on a map so the only way for me to do that is to get the location of each wifi access point.
Thanks.
You need to use a database of access points for this, such as the one at WiGLE.net.
Contact them for information on a commercial license.
Routers don't typically have GPS capabilities. You can determine the geographic location roughly using a reverse IP lookup and a geographic ISP database.
You might be able to estimate a distance away from the user using signal strength...
Related
I am working one of the application which need latitude,longitude and altitude. And I have succeed for fetching Latitude and Longitude using Fused Location but I would like to get altitude or elevation from android device without Internet.
This application gets all 3 params i.e , Lat,Long and altitude without Internet. How it is possible?
https://play.google.com/store/apps/details?id=com.ilyabogdanovich.geotracker&hl=en
Based from this thread, you don't need internet for GPS.
GPS is basically a satellite based positioning system that is designed to calculate geographic coordinates based on timing information received from multiple satellites in the GPS constellation. GPS has a relatively slow time to first fix (TTFF), and from a cold start (meaning without a last known position), it can take up to 15 minutes to download the data it needs from the satellites to calculate a position. A-GPS used by cellular networks shortens this time by using the cellular network to deliver the satellite data to the phone.
However, all that is derived that is Geographic Coordinates (latitude/longitude) is impossible to obtain more from GPS only. So you need an internet connection to get the Lat,Long and altitude.
You may also check this thread: Use FusedLocationServiceApi without internet connection
I want to know if gps can be used to get the latitude and longitude of an address.I've just began to work on gps on android.My problem is that if the user does not have internet connection, i want him to be able to get the latitude and longitude of an address.Can gps do that or it is only used to get current location.If not are they any other way of getting this done.I;m using google maps and i've also tried to get geocoding as mentioned in some posts,but it does not work.
From your question,
If you are using Google Map and GeoCoder class that means you must have Internet connection. And moreover when you are working with GPS, again you must have Internet Connection. If you are using GPS_PROVIDER then you required open sky type environment and for NETWORK_PROVIDER you can fetch gps details inside a room,but for both provider Internet is must.
You are missing the point of what GPS is designed to do.
Your phone's GPS doesn't do anything with an address. All GPS does is get the latitude/longitude of your current position, nothing more. The phone (via an internet connection) is able to identify your address based on the Latitude/Longitude that the GPS provides by using 3rd party provides (such as Google Maps)
It sounds like you just want to get the latitude/longitude of any address, not just for the device's physical location. That does not require GPS at all. But it needs an internet connection in order to access a provider to perform the geocoding.
A answer I provided to Does GPS require Internet? is a somewhat related to your issue. The 2nd to last paragraphs are pertinent here as well
While it requires a significant amount of effort, you can write your own tool to do the reverse geocoding, but you still need to be able to house the data somewhere as the amount of data required to do this is far more you can store on a phone, which means you still need an internet connection to do it. If you think of tools like Garmin GPS Navigation units, they do store the data locally, so it is possible, but you will need to optimize it for maximum storage and would probably need more than is generally available in a phone.
So effectively, you theoretically could write your own tool, cache data locally and query it as needed, but that not something that is easily done.
I need to know the distance between my phone and WiFi access points. These points are set up in adjacent rooms. I researched about Geo Location, but that's been deprecated now ... Basic set-up of my project consists of 3 WiFi access points. My code is getting the strongest signal and getting connected to that access point.
Now I need to get the distance between that access point and my phone. Help would be appreciated. Thanks.
Based on my knowledge and following answers, it is not possible to find out distance between your device and WiFi access point. Because basically they don't store GPS location inside.
how to get wifi hotspot's location?
Location and distance calculation using Wifi in android
What methods does Google use to match IP addresses to approximate location inside a building using wifi or service-provider?
The actual location identification method is abstracted away. Developers are to only concern themselves with the source.
The NETWORK_PROVIDER source uses the IP Address and Cellular triangulation to identify the user's location.
http://developer.android.com/reference/android/location/LocationManager.html#NETWORK_PROVIDER
Also the method getLastKnownLocation(best) that provides the LocationManager can be used, as GPS won't work indoors. It is not accurate, but it will give a location of a big area.
I try to receive latitude & longitude on android phone.
Is location on android receive directly from satellite?
Why it dynamic all the time, while I standing though?
So, anyone know how to make it stable ?
Thanks
The location may come from a variety of places:
The "last-known" location, an OS-level cached location (fast, but may be inaccurate)
The wifi network (Google can often deduce location from the wifi net you're on, but not always)
Mobile network - if the device is on a mobile phone network, that can provide location information
GPS receiver. If the device is outdoors this will provide the most accurate location
Your app will have specific needs, and so you need to decide which locations you want, and what you do when you get them, based on their accuracy, and the source.
With GPS, buildings, tees, the weather, etc will all have an effect on the location, so you'll never get one amazingly accurate location. Many apps just request a location and use it, but if you need accurate, stable location data, you need to collect data from relevant sources, and then use your own algorithm to decide which to use.
You need to read, understand, and use what's in this page:
http://developer.android.com/guide/topics/location/obtaining-user-location.html