geolocation

问题 I have this code: // Using this method to center MyLocation as default location when app is started private void getDeviceLocation() { Log.d(TAG, "getDeviceLocation: getting the devices current location"); mFusedLocationClient = LocationServices.getFusedLocationProviderClient(this); try { if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE

问题 I have this code: // Using this method to center MyLocation as default location when app is started private void getDeviceLocation() { Log.d(TAG, "getDeviceLocation: getting the devices current location"); mFusedLocationClient = LocationServices.getFusedLocationProviderClient(this); try { if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE

问题 I have a collection of documents with a geospatial index location: {lat:XX.XXXX, lng:XX.XXXX} . But I would like them to be outputted by TimeZone. I was thinking of converting geolocation to Timezone, and have an index based on that, but I'm not sure how to do that either, or if it'll be easier to use the geospatial index anyway. 回答1: The excellent answer Sim provided will let you do it all in your own code - but it does require a bit of overhead. If you just want to resolve the locations to

问题 I have created a xamarin forms application. The application should periodically (every 10 sec) get the location of the device (IOS and Android). How can I achieve this? I know there are some libraries for example: Xamarin.Essentials, but I can't decide how many times the location should be taken. It should also be possible to get the local of the device when the xamarin forms application runs in the background (on IOS and Android). Hope someone can help me out with this one. 回答1: For Android

问题 I have created a xamarin forms application. The application should periodically (every 10 sec) get the location of the device (IOS and Android). How can I achieve this? I know there are some libraries for example: Xamarin.Essentials, but I can't decide how many times the location should be taken. It should also be possible to get the local of the device when the xamarin forms application runs in the background (on IOS and Android). Hope someone can help me out with this one. 回答1: For Android

问题 I have created a xamarin forms application. The application should periodically (every 10 sec) get the location of the device (IOS and Android). How can I achieve this? I know there are some libraries for example: Xamarin.Essentials, but I can't decide how many times the location should be taken. It should also be possible to get the local of the device when the xamarin forms application runs in the background (on IOS and Android). Hope someone can help me out with this one. 回答1: For Android

问题 I'm developing an app using Xamarin, and I need a background service that gets the user's GPS location at recurring intervals (say, every 15 minutes). This project (https://github.com/xamarin/mobile-samples/tree/master/BackgroundLocationDemo) is the closest I can find to example code, and it claims that the location continues to update, even with the app in the background. Out of the box, this doesn't seem to be the case. Here's the log once the application moves into the background, and then

问题 First a fall i would like to tell you my rating in blackberry is very very poor. now i am trying to learn gps application. How to start a GPS application for BlackBerry? I'm using Blackberry 7. Could you suggest any working sample application or any link? 回答1: Hi following information useful to you if you want to study following information from directly site you can click this link Sample application details some more useful information you can get from here https://stackoverflow.com/a

问题 i am trying to develop an android app . I use a web service that require my location in latitude and longitude (where i am standing) and giving a feedback another location data. But, the another location data is given with polar system which the origin of polar system is the place where i stand. My question is, how to convert the given polar system data (distance, and degree from the north) to be the another location's latitude and longitude. ? Sorry for my bad english. 回答1: Use formula:

问题 i am trying to develop an android app . I use a web service that require my location in latitude and longitude (where i am standing) and giving a feedback another location data. But, the another location data is given with polar system which the origin of polar system is the place where i stand. My question is, how to convert the given polar system data (distance, and degree from the north) to be the another location's latitude and longitude. ? Sorry for my bad english. 回答1: Use formula: