[android-developers] Does Android's GPS location provider do a built-in optimization?
how accurate is the data from Android's GPS location provider? does the device always try to seek a satellite, or does it sometimes return an optimization of the past locations without querying the satellites? if this question is device-specific, i'm asking about HTC Hero, HTC Desire and Google Nexus One. thanks -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Does Android's GPS location provider do a built-in optimization?
in most gps devices , the device has a graph of visible sat.s and estimates the postion of sat.s based on it ... sincerely mohammad shankayi On Wed, Dec 29, 2010 at 10:59, t tomers...@gmail.com wrote: how accurate is the data from Android's GPS location provider? does the device always try to seek a satellite, or does it sometimes return an optimization of the past locations without querying the satellites? if this question is device-specific, i'm asking about HTC Hero, HTC Desire and Google Nexus One. thanks -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Does Android's GPS location provider do a built-in optimization?
That doesn't really make sense. When you ask for location, you will specify how accurate you want the data to be. If you ask for GPS accuracy, it will start using that (if it hasn't already). You keep the request open, so it continuously looks for satellites and tracks movement. Each update it gives you includes the accuracy of the position, which is based on the source of the data (network, GPS, etc), and for GPS the number of satellites. Often when you first ask for GPS data, there will be no GPS fix at all, but you will still be able to get some data based on cell towers. The accuracy information tells you how much you can infer from each report you get. But this is not a one-shot request -- as long as you have asked for position reports, it will continually monitor the location as accurately as it can. There is of course the newer API to get the last location, and of course that is what it says -- the last reported location, whatever that was, without use GPS or cell towers to try to determine the current location. On Wed, Dec 29, 2010 at 10:59 AM, t tomers...@gmail.com wrote: how accurate is the data from Android's GPS location provider? does the device always try to seek a satellite, or does it sometimes return an optimization of the past locations without querying the satellites? if this question is device-specific, i'm asking about HTC Hero, HTC Desire and Google Nexus One. thanks -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Does Android's GPS location provider do a built-in optimization?
dianne is right but this ability is only in A-gps devices and as we know all android devices has the ability of positioning with cell towers :) sincerely mohammad shankayi On Wed, Dec 29, 2010 at 12:23, Dianne Hackborn hack...@android.com wrote: That doesn't really make sense. When you ask for location, you will specify how accurate you want the data to be. If you ask for GPS accuracy, it will start using that (if it hasn't already). You keep the request open, so it continuously looks for satellites and tracks movement. Each update it gives you includes the accuracy of the position, which is based on the source of the data (network, GPS, etc), and for GPS the number of satellites. Often when you first ask for GPS data, there will be no GPS fix at all, but you will still be able to get some data based on cell towers. The accuracy information tells you how much you can infer from each report you get. But this is not a one-shot request -- as long as you have asked for position reports, it will continually monitor the location as accurately as it can. There is of course the newer API to get the last location, and of course that is what it says -- the last reported location, whatever that was, without use GPS or cell towers to try to determine the current location. On Wed, Dec 29, 2010 at 10:59 AM, t tomers...@gmail.com wrote: how accurate is the data from Android's GPS location provider? does the device always try to seek a satellite, or does it sometimes return an optimization of the past locations without querying the satellites? if this question is device-specific, i'm asking about HTC Hero, HTC Desire and Google Nexus One. thanks -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Does Android's GPS location provider do a built-in optimization?
Yes if the device does not have a GPS, or if the user has turned off the GPS, you will only get cell or network based location. On Wed, Dec 29, 2010 at 12:47 PM, mohammad shankayi mohd...@gmail.comwrote: dianne is right but this ability is only in A-gps devices and as we know all android devices has the ability of positioning with cell towers :) sincerely mohammad shankayi On Wed, Dec 29, 2010 at 12:23, Dianne Hackborn hack...@android.comwrote: That doesn't really make sense. When you ask for location, you will specify how accurate you want the data to be. If you ask for GPS accuracy, it will start using that (if it hasn't already). You keep the request open, so it continuously looks for satellites and tracks movement. Each update it gives you includes the accuracy of the position, which is based on the source of the data (network, GPS, etc), and for GPS the number of satellites. Often when you first ask for GPS data, there will be no GPS fix at all, but you will still be able to get some data based on cell towers. The accuracy information tells you how much you can infer from each report you get. But this is not a one-shot request -- as long as you have asked for position reports, it will continually monitor the location as accurately as it can. There is of course the newer API to get the last location, and of course that is what it says -- the last reported location, whatever that was, without use GPS or cell towers to try to determine the current location. On Wed, Dec 29, 2010 at 10:59 AM, t tomers...@gmail.com wrote: how accurate is the data from Android's GPS location provider? does the device always try to seek a satellite, or does it sometimes return an optimization of the past locations without querying the satellites? if this question is device-specific, i'm asking about HTC Hero, HTC Desire and Google Nexus One. thanks -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
