Xamarin形式地理编码Android [英] Xamarin Forms Geocode Android

问题描述

我有两段代码，一段是从一个位置获得地址，一个从地址获得位置。

I Have two pieces of code, one to get adresses from a position & one to get position from adress.

GetAddressesForPosition

 var geoCoder = new Geocoder();

            Task.Run(async () =>
            {
                var possibleAddresses = await geoCoder.GetAddressesForPositionAsync(position);

                Device.BeginInvokeOnMainThread(() =>
                {
                    var firstAdress = possibleAddresses.FirstOrDefault();
                    GeolocationAdressEntry.Text = firstAdress;
                    //GeolocationAdressEntry.Text = $@"{firstAdresse.} {firstAdresse.PostalCode} {firstAdresse.Locality}";
                });

            });

对于这段代码，我没有任何异常，代码也没有执行过。

For this code, I not have any exception and the code never goes after

var possibleAddresses = await geoCoder.GetAddressesForPositionAsync(position); 

GetPositionsForAddress

GetPositionsForAddress

var elem = (Entry)sender;
            var geoCoder = new Geocoder();

            IEnumerable<Xamarin.Forms.Maps.Position> loc;

            try
            {
                loc = await geoCoder.GetPositionsForAddressAsync(elem.Text);

                var firstLoc = loc.FirstOrDefault();
                var adress = elem.Text;

                CreateNewPin(firstLoc, adress);
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex.Message);
            }

对于这一个，它会抛出一个错误：grpc failed。如果需要，我可以发布完整的错误。

For this one it thrown an error : "grpc failed". If needed I can post the complete error.

这很无聊，因为它在IOS中完美运行。

This is boring because it works perfectly in IOS.

I尝试使用不同版本的仿真器（Genymotion& adb），并且使用真实设备。同样的问题。

I tried on emulators ( Genymotion & adb ) with different versions and also in a true device. Same issue.

推荐答案

问题来自仿真器。代码在真正的设备中工作。

The issue comes from the emulator. Code work in a true device.

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