Prevent voicemail from playing when call is in progress

Visual voicemail playback uses the phone stream, which will cause all sort of audio conflict in a call. This CL forces voicemail playback to fail if a call is in progress.

Bug: 63584851
Test: manual - play voicemail while in call, "Cannot play voicemail" shown.
PiperOrigin-RevId: 163899919
Change-Id: I7350f6904b5a76f9c21a1d541f3c1f39271a5608
1 file changed
tree: 6654371e9cc7687fb73cc962944c4f70e4b7add4
  1. assets/
  2. java/
  3. Android.mk
  4. AndroidManifest.xml
  5. LICENSE