var smtc = SystemMediaTransportControls.GetForCurrentView();
smtc.ButtonPressed += smtc_ButtonPressed;
smtc.PropertyChanged += smtc_PropertyChanged;
smtc.IsEnabled = true;
smtc.IsPauseEnabled = true;
smtc.IsPlayEnabled = true;
smtc.IsNextEnabled = true;
smtc.IsPreviousEnabled = true;
在后台任务中,你应该有:
smtc = BackgroundMediaPlayer.Current.SystemMediaTransportControls;
smtc.ButtonPressed += smtc_ButtonPressed;
smtc.PropertyChanged += smtc_PropertyChanged;
smtc.IsEnabled = true;
smtc.IsPauseEnabled = true;
smtc.IsPlayEnabled = true;
smtc.IsNextEnabled = true;
smtc.IsPreviousEnabled = true;
public MainPage()
{
this.InitializeComponent();
// Hook up app to system transport controls.
systemMediaControls = SystemMediaTransportControls.GetForCurrentView();
systemMediaControls.ButtonPressed += SystemControls_ButtonPressed;
// Register to handle the following system transpot control buttons.
systemMediaControls.IsPlayEnabled = true;
systemMediaControls.IsPauseEnabled = true;
}
async void SystemControls_ButtonPressed(SystemMediaTransportControls sender,
SystemMediaTransportControlsButtonPressedEventArgs args)
{
switch (args.Button)
{
case SystemMediaTransportControlsButton.Play:
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
mediaElement.Play();
});
break;
case SystemMediaTransportControlsButton.Pause:
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
mediaElement.Pause();
});
break;
default:
break;
}
}