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Call Recording error if existing recorder app engage in recording

recorder = new MediaRecorder(); recorder.setAudioSource(MediaRecorder.AudioSource.VOICE_CALL); recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); fileName = FileHelper.getFilename(phoneNumber); recorder.setOutputFile(fileName); recorder.start(); It works perfectly in my device .But when…