I want to make an app for android phones which will gives some notification when it reaches certain point . Is it possible to do it using GPS ? And is it possible to make user download maps and then use that map to track location using GPS system , i mean can i track device location without internet using GPS and gives notification when phone is offline .if it is possible then please give me some guidance how can I do it
you can get location with no cell tower by satellite. it is free and called fine location. cell towers are less accurate form of location. The map used to display the location must have a connection to the internet however and you get maps via google This is free to develop apps but when you sell the app google takes a cut.
yeah we can get our current location in offline by using FUSED LOCATION
refer here
I need to get current location in China but current location manager is not working in china.Its not showing latitude and longitude. Please tell me how can I get this? Many Thanks
Fact 1: All Google services are blocked in China.
Fact 2: Although it gives a feeling that AOSP is nothing to do with Google, it's really not.
The truth is that once you used NETWORK_PROVIDER to get a location, a message was send to Google location server to check out the location, and returned the location back to you. For the reason every Chinese knows about, you can't access the server, that's why when you combine NETWORK_PROVIDER and GPS_PROVIDER together, debug codes in a room, nothing get returned(GPS is not accessible in a room).
Solution:
Use android ROM modified by Chinese company like XIAOMI, MEIZU etc. These ROMs modify the framework and redirect the NETWORK_PROVIDER message to other servers.
Use some third-party location service like BAIDU location SDK.
I have make an android application which help us to get GPS Location using A-gps in my android phone. I am getting latitude and longitude successfully in Metro Cities of my country, but when I am going to some forest area,GPS do not get location and for this I need to run GPRS of my phone,after running google map once in my phone ,GPS successfully gets latitude and longitude even if I closes my internet connection or remove sim card from my phone. But since I do not want to use google map, what should I do now and why it is happening?? Any help will be appreciable
It takes a long time (several minutes) to get the GPS location with high precision. However, if you enable network based location (e.g. cell tower, WiFi), it's way faster but with lower precision.
As a result, you should listen to all the providers with LocationManager, and figure out which provides the best location. Or, if your app targets Android 8 and above, you can use the Location APIs provided with Google Play Services, which hides the details as using LocationManager directly.
First make sure that it is not the fault of your phone or its operation system version.
Download a well working known GPS App, look if they get a GPS signal without internet.
Place it under very good cointions: free view to sky, outside dense city, at least an open place.
You should get a signal within one minute, maybe if the phone has a poor built-in GPS antenna, a bit more, wait some minutes.
If the well working foreign app still don't get GPS it's an Operating system bug.
If you get one, then it´s your fault, and it is worth for further investigation.
*first check your GPS working or not properly with **ANDROITS GPS TEST*.
if it finds and fixes satellite do not worry. as AGPS is fast , standlone GPS needs to have much more time to fix on its own especially in city as many radio waves disturbs GPS fixure.
better first fix with AGPS and then you can turn off data or internet, still it will work as it already had its location and satellites fixed.
with standlone GPS it takes huge time and battery.**
If your phone use GPS h/w to get the location information, it don't require any internet connection. It should be able to get the location fix using GPS without the help of internet. But it may take some time to get the location fix.
You can install the this free app from play-store to test the GPS of your phone : "TestYourGPS".
https://play.google.com/store/apps/details?id=com.eorsavik.testyourgps
My question is, How will actually LocationManager get data from GPS device on mobile?
Can I manually give LocationManager data which i intended to give??
For my testing I require such thing.
Or Can anyone provide me details how or through which File will GPS device provide data to LocationManager.
Or By what means will the Location API communicate with GPS device/ GPS driver.
I require some or the other information to provide direct GPS data to LocationManager inturn to the APPs using locationManager(Directly on mobile not by emulators).
Any help or suggestions are Appreciated.
Reagrds
Poorna Chander T
Here is a nice app for testing apps that require GPS:
http://forum.xda-developers.com/showthread.php?t=1577485
Also you have to select "Allow mock locations" in developer options on your phone.
I have implemented Android GPS application and cell-id application for location tracing separately, now I want to combine the functionality of both the applications, I want to trace the location via GPS if wifi not available or vice verca. Kindly guide me how can I get the status of GPS and wifi.
http://developer.android.com/guide/topics/location/obtaining-user-location.html