void StartIfStopped()
{
Task.Run(async() =>
{
if (await _viewModel.IsRunning() == false)
{
await _viewModel.StartENService();
/// If EN is disabled, then the OS dialog will pop up.
/// Calling the StartENService method again seems to make the EN api properly update its state, before we update our UI.
/// This is not an optimal solution, but seems to work fine as a workaround for now.
/// A better way would be for us to be able to listen to state changes in the EN api.
if (await _viewModel.IsEnabled() == false)
{
await _viewModel.StartENService();
}
if (await _permissionManager.PoweredOff())
{
DialogHelper.ShowBluetoothTurnedOffDialog(this);
}
InvokeOnMainThread(() =>
{
UpdateUI();
});
}
});
}
private async void StartStopButton_Click(object sender, EventArgs e)
{
await _semaphoreSlim.WaitAsync();
bool isRunning = await _viewModel.IsEnabled();
switch (isRunning)
{
case true when !_permissionUtils.AreAllPermissionsGranted():
PreventMultiplePermissionsDialogsForAction(_permissionUtils.HasPermissions);
_semaphoreSlim.Release();
break;
case true:
await DialogUtils.DisplayDialogAsync(
this,
_viewModel.OffDialogViewModel,
StopGoogleAPI,
() => _semaphoreSlim.Release());
break;
default:
await DialogUtils.DisplayDialogAsync(
this,
_viewModel.OnDialogViewModel,
StartGoogleAPI,
() => _semaphoreSlim.Release());
break;
}
UpdateUI();
}
private async void StartGoogleAPI()
{
try
{
await _viewModel.StartENService();
bool isRunning = await _viewModel.IsRunning();
if (isRunning)
{
BackgroundFetchScheduler.ScheduleBackgroundFetch();
}
if (await _viewModel.IsEnabled() &&
!await _viewModel.IsRunning() &&
await BluetoothStateBroadcastReceiver.GetBluetoothState(UpdateUI) == BluetoothState.OFF)
{
await _permissionUtils.HasPermissions();
// wait until BT state change will be completed
await BluetoothStateBroadcastReceiver.GetBluetoothState(UpdateUI);
}
}
finally
{
UpdateUI();
}
}