gps

问题 Following up with the ans I got from this post I would like to know how can I avoid making use of AGPS or network GPS. I am using LocationClient in my code to fetch user's current location. The LocationClient is a fused API which automatically makes use of GPS_PROVIDER or NETWORK_PROVIDER . My main intention here is to avoid deduction of money (For more information on this refer the SO question that I have linked above). Thanks. 回答1: Don't use fused. Use GPS_PROVIDER alone. That will use just

问题 I want to get the longitude and latitude of device. I used location api to get the longtitude and latitude the problem now I am facing is that I could not call the getLocation() method inside button click event. It throws an error as getLocation() method cannot be called from event thread.Can any one tell me how to solve this problem? 回答1: You simply create another thread and call getLocation() from that thread. See the documentation for java.lang.Thread in the API documentation. 来源： https:/

问题 how can I access to my Bluetooth GPS via Standard Serial Port (SPP) using PHP in Windows ? Thanks. 回答1: Here is a Windows extension for serial data: http://www.easyvitools.com/phpserial/index.html This class might be a bit more cross platform: http://www.phpclasses.org/package/3679-PHP-Communicate-with-a-serial-port.html Then I'd suggest reading about the NMEA protocol: http://en.wikipedia.org/wiki/NMEA_0183 来源： https://stackoverflow.com/questions/3691783/php-access-to-bluetooth-gps-via

问题 I am currently using Python/Numpy to deal with geographical/GPS data (loving it!), and I am facing the recurring task to calculate distances between geographical points defined by a coordinate pair pn = [lon, lat] . I have a function that I use like this: dist = geodistance(p1, p2) which is analog to euclidean distance in linear algebra (vector subtraction/difference), but occurs in geodesical (spherical) space instead of rectangular euclidean space. Programmatically, euclidean distance is

问题 I am trying to find distance between two locations in android using the LocationListener and related classes and methods. I was able to get the coordinates of the given address by using geo coding class. And also was able to get distance between two addresses using the distanceto method. 2.Now I want to give address and get coordinates and then get the distance between previous given address location and the current location (which changes) in real time. since there is no current location

问题 I want to make an application in android. In this app user have to register in this app. With the registration the gps location(lat and long) will store in database table with user info. In this app i want to add a functionality that is "Search People who are in Root". User can input starting point and ending point(like : Mumbai to Delhi). And every peoples between this two point want to be found. For Example : User-A have newly registered in this app. User-A's gps location is like lat = 20

问题 How do I simulate GPS movement on iOS simulator? I am developing an app that uses gps an I need to test it while the user location is changing.. How can I do that? thank you in advance.. 回答1: From the Debug menu of the iOS Simulator, check the Location menu: It provides you with several options pertaining to changing the location of the simulated device. 来源： https://stackoverflow.com/questions/12641817/ios-simulator-and-gps

问题 In Android What are the location determination strategies for Real-time GPS location determination (for user real-time user location tracking). Periodic GPS location determination (for periodic user location determination). For most accurate GPS location value. I am trying to make mobile applications of type 1 and type 2. Please guide me regarding the same 回答1: You can use Google Play Services API which is friendly and simple to use or GPS location API directly. Google Play Services API can

问题 perhaps this is a simple question. I have 3 GPS coordinates (one is the current user location). What I want now is to calculate the angle between the user location and the two GPS coordinates. Imagine the user location in the center of the two other points, the three points can be seen as a triangle. And I want to calculate the angle at the user location. I hope someone can help me because I have no idea how to do this with spherical coordinates like the GPS coordinates I have. THX - nekro

问题 My NETWORK_PROVIDER in my GPS application has stopped working all of a sudden. It has nothing to do with my internet connection because every other application on my phone works with the internet. I tried it with GPS_PROVIDER and it works perfectly fine and on top of that, after calling onLocationChanged it IS able to retrieve locations from the internet, so this further reinstates that the internet WORKS. My phone: Samsung Galaxy S2 Android version 4.0.3 Things I have tried to no avail: