// onCharacteristicChanged
UUID characteristicUuid = null;// characteristic.getUuid();
if (Characteristic.HEART_RATE_MEASUREMENT.equals(characteristicUuid)) {
byte[] value = null;// characteristic.getValue();
HeartRateMeasurement hrm = new HeartRateMeasurement(value);
hrm.getHr();
hrm.getEe();
}
}