Android人停止通话后，如何自动停止语音录制？

TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
PhoneStateListener phoneStateListener = new PhoneStateListener() {
    @Override
    public void onCallStateChanged(int state, String incomingNumber) {
        super.onCallStateChanged(state, incomingNumber);
        if (state == TelephonyManager.CALL_STATE_IDLE) {
            // 通话结束，停止录制
            stopRecording();
        }
    }
};
telephonyManager.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);

MediaRecorder mediaRecorder = new MediaRecorder();
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mediaRecorder.setOutputFile(outputFilePath);

// 开始录制
try {
    mediaRecorder.prepare();
    mediaRecorder.start();
} catch (IOException e) {
    e.printStackTrace();
}

// 停止录制
private void stopRecording() {
    if (mediaRecorder != null) {
        mediaRecorder.stop();
        mediaRecorder.release();
        mediaRecorder = null;
    }
}