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Why don't music files automatically resume playing after hanging up a system call on an Android device?

The startAudioMixing method is called to play a music file on an Android device. During the playback process, the system's built-in phone software is used to answer or make a call. After hanging up the phone, the music file does not automatically resume playback.

Reason​

The SDK cannot determine whether the system phone has finished using the audio output device, so music files will not resume playback automatically.

Solution​

After calling the startAudioMixing method, it is recommended to listen for phone events using the native Android method PhoneStateListener and perform the following steps:

  1. When you answer or make a call, call the getAudioMixingCurrentPosition method to get the playing progress of the music file.
  2. After hanging up the phone, call startAudioMixing method again to play the music file, and then call setAudioMixingPosition method to restore the playback progress.
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