gps

问题 I'm getting this unreadable string from a GPS tracking device and I need to decode these information so I can use it in my application (c#). $A grQ05Ah@‘)���ÿÿûÿÿ����°#~À‚¡U But in fact what i expect is something like below : *HQ,XXXXXX,41,4#V1,time,A,**Lat**,N/S,**Lng**,W/E,000.00,000,date,FFFFFBFF,432,35,32448,334 How can i convert the string to standard format in c# ? I convert data to byte as you can see : 24-41-20-20-67-72-51-30-35-41-68-40-91-29-3F-3F-3F-FF-FF-FB-FF-FF-3F-3F-3F-3F-B0-23

问题 Is there any other way to set gps coordinates for the emulator? It does not work for the following methods: 1). geo fix longitude, latitude [altitude] If it does not work in terminal. 2) 3) 回答1: In the emulator tool bar there should be ellipses you can click. Once you click them the Longitude and Latitude in that window are editable and will change the emulators perceived location. annotated image of where to find this button image showing where to edit long and lat 回答2: An additional step

问题 I'm writing a simple app that needs to set the current GPS coordinates from let's say point A, then travel to another point B and have it detect the coordinates at point B. I am able to get point A coordinates no problem. I'm just not getting it to detect the coordinates at point B, it reads the same coordinates as the ones at point A. I've got the app installed on my phone, and I am driving a mile between points. My manifest file includes every possible permission for location. Here is the

问题 As we all know GPS system is far from perfect and when you go around with your app using the gps when the GPS loses the signal and it starts calculating again. And if you try to calculate the distance correctly it will start calculating and for example if you were 30 meters away from your destination it will calculate for example 130 meters. Which messes my how calculation of the distance up. So I found some suggestion that I should filter the GPS coordination using the speed. I want to

问题 Situation: My program has parts that are heavily location based, but do to speed issues for when the location is actually needed, I don't have time to lock. The solution I have designed is to get location information during primary operation (read: main screen) so that the location is available when the specific pieces need them. Right now I register for updates and in onLocationChanged it checks if the location is accurate enough. If it is it calls removesUpdates. Problem: If the device is

问题 We are developing an application for people to mark areas (single points, lines, and polygons) on Google Maps using Android phones (2.1 and up). They are given a Google Maps view and enter the points for the lines by centering the screen at the location that they want to create a point and then press a button on the GUI to add the point at that location. After entering a point, they recenter the screen on the location for the next point and press the create point button again. After all of

问题 I know this question has been asked in similar forms before, but I found no real answer about the following issue: On my Nexus One there's a widget to toggle on/off several things on my phone like wlan, bluetooth, gps,.. Why does this widget has access to the GPS, without forwarding me to the settings screen? And how can I use this functionality in my own apps? On many sites it is mentioned, this is done because of security reasons...but in a strage way, this widget may do this? why? and the

问题 I am making a GPS tracking application. The app should track the iPhone user location. In my case it tracking when app is in background and open . if I am killing my app from background I am not getting location update. Is this an any possible after killing the app, app should track the location in iOS(objective c). 回答1: There is a way to get the location update even when the app is killed/terminated by the user or iOS. In iOS 8 and iOS7 use [locationManager

问题 I don't know why this error is occuring. I didn't update anything. I generated new keys from the google api console but the error is stil appearing. I wanted to do this example [Android SearchView widget with Google Places API][1]. debug->res->values->google_maps_api.xml I also have a release folder with the same structure and I entered the same key in both files. Log: 3151-3151/com.example.onur I/Google Maps Android API﹕ Google Play services client version: 4242000 07-18 10:28:13.655 3151

问题 The application will select a random latitude and longitude to create a point which the user must find. The user's distance from the point will be displayed using a "hot-cold meter", which will change color depending on the distance. This meter must constantly update, which would require that I constantly retrieve the user's location. I would also need to use kCLLocationAccuracyBest . However, this sounds like it would use up a lot of battery. Can I do anything to save battery? 回答1: From the