我创建了一个非常简单的测试应用程序来尝试将我当前的纬度/经度反向地理编码为地址。
这是我的 ViewModel 的代码:
namespace LoginProductsMVVM.Core.ViewModels
{
public class ProductDetailViewModel
: MvxViewModel
{
public void Init(Product product)
{
Product = product;
}
private Product _product;
public Product Product
{
get { return _product; }
set { _product = value;
RaisePropertyChanged (() => Product); }
}
private string _latitude;
public string Latitude{
get { return _latitude; }
set { _latitude = value; RaisePropertyChanged(() => Latitude); }
}
private string _longitude;
public string Longitude{
get { return _longitude; }
set { _longitude = value; RaisePropertyChanged(() => Longitude); }
}
private string _address;
public string Address{
get { return _address; }
set { _address = value; RaisePropertyChanged(() => Address); }
}
private IMvxGeoLocationWatcher _watcher;
public IMvxGeoLocationWatcher Watcher
{
get
{
_watcher = Mvx.Resolve<IMvxGeoLocationWatcher> ();
return _watcher;
}
}
public ProductDetailViewModel(IMvxGeoLocationWatcher watcher)
{
_watcher = watcher;
_watcher.Start (new MvxGeoLocationOptions (), OnLocation, OnError);
}
void OnLocation (MvxGeoLocation location)
{
Latitude = location.Coordinates.Latitude.ToString();
Longitude = location.Coordinates.Longitude.ToString();
// Android Location specific stuff
var activity = Mvx.Resolve<IMvxAndroidCurrentTopActivity> ().Activity;
Geocoder geocdr = new Geocoder (activity.BaseContext);
IList<Address> addresses = geocdr.GetFromLocation (double.Parse(Latitude), double.Parse(Longitude), 1);
addresses.ToList().ForEach ((addr) => Address += addr.ToString() + "\r\n\r\n");
}
void OnError (MvxLocationError error)
{
Mvx.Error ("Seen location error {0}", error);
}
}
}
我的 OnLocation 方法中有一个断点,但它永远不会进入那里。我是否遗漏了一些东西才能在 Android 上正常工作?它似乎适用于 iOS...