Geolocator.StatusChanged Kejadian
Definisi
Penting
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// Register
event_token StatusChanged(TypedEventHandler<Geolocator, StatusChangedEventArgs const&> const& handler) const;
// Revoke with event_token
void StatusChanged(event_token const* cookie) const;
// Revoke with event_revoker
Geolocator::StatusChanged_revoker StatusChanged(auto_revoke_t, TypedEventHandler<Geolocator, StatusChangedEventArgs const&> const& handler) const;
public event TypedEventHandler<Geolocator,StatusChangedEventArgs> StatusChanged;
function onStatusChanged(eventArgs) { /* Your code */ }
geolocator.addEventListener("statuschanged", onStatusChanged);
geolocator.removeEventListener("statuschanged", onStatusChanged);
- or -
geolocator.onstatuschanged = onStatusChanged;
Public Custom Event StatusChanged As TypedEventHandler(Of Geolocator, StatusChangedEventArgs)
Jenis Acara
Persyaratan Windows
Kemampuan aplikasi |
location
ID_CAP_LOCATION [Windows Phone]
|
Contoh
Contoh kode ini menunjukkan bagaimana peristiwa StatusChanged ditangani. Objek Geolocator memicu peristiwa StatusChanged untuk menunjukkan bahwa pengaturan lokasi pengguna berubah. Peristiwa tersebut melewati status yang sesuai melalui properti Status
using Windows.UI.Core;
...
async private void OnStatusChanged(Geolocator sender, StatusChangedEventArgs e)
{
await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
// Show the location setting message only if status is disabled.
LocationDisabledMessage.Visibility = Visibility.Collapsed;
switch (e.Status)
{
case PositionStatus.Ready:
// Location platform is providing valid data.
// notify user: Location platform is ready
break;
case PositionStatus.Initializing:
// Location platform is attempting to acquire a fix.
// notify user: Location platform is attempting to obtain a position
break;
case PositionStatus.NoData:
// Location platform could not obtain location data.
// notify user: Not able to determine the location
break;
case PositionStatus.Disabled:
// The permission to access location data is denied by the user or other policies.
// notify user: Access to location is denied
// Clear cached location data if any
break;
case PositionStatus.NotInitialized:
// The location platform is not initialized. This indicates that the application
// has not made a request for location data.
// notify user: No request for location is made yet
break;
case PositionStatus.NotAvailable:
// The location platform is not available on this version of the OS.
// notify user: Location is not available on this version of the OS
break;
default:
// unknown result
break;
}
});
}
Keterangan
Anda dapat mengakses informasi tentang peristiwa dengan objek
Saat menggunakan geofence, gunakan peristiwa GeofenceMonitorStatusChanged untuk memantau perubahan izin lokasi alih-alih peristiwa ini dari kelas Geolocator.
Berlaku untuk
Lihat juga
- StatusChangedEventArgs
- Dapatkan lokasi saat ini
- Dapatkan lokasi saat ini
- Menyiapkan geofence
- sampel geolokasi