Xamarin
A Microsoft open-source app platform for building Android and iOS apps with .NET and C#.
5,292 questions
Xamarin.Form make OutBound Call with SpeakerPhoneOn
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Universal Camera
276
Reputation points
It use to be that AudioManager allowed to turn SpeakerPhone On and Off during InBound and OutBound Call. I have posted several question for Android 10-13 with Xamarin each of which have fallen on deaf ears. WHY? Could it'd be that Google has sabotage the old WORKING protocols into new protocols and has blindsided Xamarin. Whatever the reasons are it's creating a lot of problems in using speakerphone. In my search I am learning that Android documents reference using PreciseCallState for managing status of outbound calls. Since OffHook event is the only State Event currently available which really does not expose the events regarding if other phone has answered your call. I wrote a background service that monitors the current outgoing call and I discovered the CallMode always InCall status and only OffHook event is fired. My attempt to activate the speakerphone using this background service yielded no success. PLEASE Someone HELP!!!!
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Rob Caplan - MSFT 5,412 Reputation points Microsoft Employee2023-01-29T06:52:06.98+00:00 @Universal Camera , if you need help beyond what you can get in the forum you can open a support case at https://support.serviceshub.microsoft.com/supportforbusiness/create?sapId=4fd4947b-15ea-ce01-080f-97f2ca3c76e8 and select Developer Tools/Xamarin/Class Libraries and Runtime/Android Platform Libraries
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Universal Camera 276 Reputation points
2023-01-29T08:57:14.1566667+00:00 @Anonymous I was wondering when are you going to rescue me. I will follow your recommendation and report back! Thank you Rob!
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Universal Camera 276 Reputation points
2023-01-29T15:56:11.07+00:00 @Anonymous is this problem unique to me or is this something that is verifiable on your end by a sample code that I provided below for the BroadcastReceiver and MainActivity...Both of my LG-K51 not activating SpeakerPhoneOn running Android 12 Targeting 10. Using VS2019 has the same result...Thanks Rob in Advance! https://learn.microsoft.com/en-us/answers/questions/1161762/xamarin-forms-speakerphone-stop-activating-suddenl?comment=question#comment-1168376
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Universal Camera 276 Reputation points
2023-02-01T18:20:32.51+00:00 @Rob Caplan I followed the link you provided for reporting SpeakerPhoneOn issue, but as soon I specified Visual Studio Community the process ended.
I would appreciate further guidance towards a resolution!
Thank you Rob!
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Rob Caplan - MSFT 5,412 Reputation points Microsoft Employee
2023-02-02T18:33:55.6533333+00:00 If you need help with calling Android methods from Xamarin you can open a case with the path Developer Tools/Xamarin/Class Libraries and Runtime/Android Platform Libraries . Visual Studio Community isn't directly relevant.
Microsoft can help only with the Xamarin side - if there's an underlying problem or limitation in Android or in your specific device you'd need to report those through Android or the device manufacturer.
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Universal Camera 276 Reputation points
2023-02-04T02:52:15.5966667+00:00 @Rob Caplan Thank you! I don't understand a perfectly running code stop working. The support is paid only so that takes me out of that path. Can you PLEASE try above code and let me know if it works for you?
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Rob Caplan - MSFT 5,412 Reputation points Microsoft Employee
2023-02-06T22:48:37.0433333+00:00 You've posted the same question several times over almost a two year timespan and received the same advice multiple times: you need to follow up with Android. Continuing to repeat the same question is going to give you the same answer.
This appears to be an Android issue not a Xamarin issue. You are calling Android Audio API here. Xamarin is just providing the ability to call them from C#, not adding to or altering the actual functionality of the AudioManager and Telephony stacks. Telephony is specialized enough that we can't help you with it on the Q&A forums. If you want to open a case we can provide more advisory development support, but even so we can't directly address problems in Android.
Typically when something worked in one version of Android and then doesn't in the next it's because Android either deprecated the feature or added security around it, though it's also possible that they either fixed or introduced a bug. From a quick look at Android's documentation it appears that setSpeakerPhoneOn has been deprecated in favor of the more general setCommunicationDevice.
This API replaces the following deprecated APIs:
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