How to check whether microphone is used by any background app

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After searching more i found the solution and i am adding it here for anyone that needs it to find it easier.

private boolean validateMicAvailability(){
    Boolean available = true;
    AudioRecord recorder =
            new AudioRecord(MediaRecorder.AudioSource.MIC, 44100,
                    AudioFormat.CHANNEL_IN_MONO,
                    AudioFormat.ENCODING_DEFAULT, 44100);
    try{
        if(recorder.getRecordingState() != AudioRecord.RECORDSTATE_STOPPED ){
            available = false;

        }

        recorder.startRecording();
        if(recorder.getRecordingState() != AudioRecord.RECORDSTATE_RECORDING){
            recorder.stop();
            available = false;

        }
        recorder.stop();
    } finally{
        recorder.release();
        recorder = null;
    }

    return available;
}

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