问题
Is it possible to use the text-to-speech engine to send a message through a voice call? Like an answering machine.
It's also possible to monitor an outgoing voice call to read out loud a text when the other point answers the phone?
Thanks!
回答1:
During a call, speech generated by TextToSpeech engine won't be audible to the other end of the call.
回答2:
No. In typical android phone designs, the in-call audio bypasses the processor on which linux/android are running, so you can't directly inject anything into it.
来源：https://stackoverflow.com/questions/4203801/use-text-to-speech-on-a-voice-call