public async void PreferredSubscriptionBtn_Clicked(object sender, EventArgs e)
{
try
{
var action = await DisplayActionSheet("Operation", "Cancel", null, Enum.GetNames(typeof(CallPreferredVoiceSubscription)));
Log.Debug(Globals.LogTag, "Action: " + action);
if (action != null)
{
CallPreferredVoiceSubscription subscription = (CallPreferredVoiceSubscription)Enum.Parse(typeof(CallPreferredVoiceSubscription), action);
Log.Debug(Globals.LogTag, "CallPreferredVoiceSubscription start -- Set subscription to " + subscription);
await call.SetCallPreferredVoiceSubscription(subscription);
CallPreferredVoiceSubscription subs = call.GetCallPreferredVoiceSubscription();
Log.Debug(Globals.LogTag, "Current CallPreferredVoiceSubscription = " + subs);
if (subs == subscription)
{
Log.Debug(Globals.LogTag, "CallPreferredVoiceSubscription set and get subscription is successful");
}
else
{
Log.Debug(Globals.LogTag, "CallPreferredVoiceSubscription set and get subscription has failed");
}
}
}
catch (Exception ex)
{
Log.Debug(Globals.LogTag, "PreferredVoiceSubscription ,exception = " + ex.ToString());
}
}
internal static extern int SetCallPreferredVoiceSubs(IntPtr handle, CallPreferredVoiceSubscription subscription, TapiResponseCallback cb, IntPtr userData);
internal static extern int GetCallPreferredVoiceSubs(IntPtr handle, out CallPreferredVoiceSubscription subscription);
internal static extern Telephony.TelephonyError GetPreferredVoiceSubscription(IntPtr handle, out CallPreferredVoiceSubscription callSub);