Thank you for your answer.

I search on the RFID123 android sample code an tried to set the correct configuration, but I'm not able to maintain the inventory perform precess.

In fact when I pressed on the trigger, I receive the "INVENTORY_START_EVENT" but 1 second after, I receive the "INVENTORY_STOP_EVENT" without release the trigger.

It's like if the "Inventory.perform()" was just a one shot read.

Do we have a way to maintain the reading during all the time I have the trigger pressed ? Do we need to manually loop on the "Inventory.perform()" while the trigger is pressed ? 

Thank you for your help.

Thank you so mush for your quick answer !

I tested the trigger Start trigger switch and yes, on RFID123 app, it works because the "Trigger type" is set to Handheld and to to Immediate.

The problem is, on my application, when I set to "Immediate", the inventory perform process only on the the pressed event but if I set to others ("handheld", "periodic"), the event "INEVNTORY_START_EVENT" not occurred and I have directly the event "INVENTORY_STOP_EVENT".

I verified, the Inventory.perform() is called but it seems that nothing perform.

Do you have an idea of what would be my problem ?

Thank you for your time

Thank you for your answer.

Sorry, yes I updated my code since my first comment.

After some updates, this is my actual code (where I have the issue): 

-----------------------------------------------------------------------------

// Antenna
Antennas.AntennaRfConfig antennaRfConfig = reader.Config.Antennas.getAntennaRfConfig(1);
antennaRfConfig.setTransmitPowerIndex(270);
antennaRfConfig.setTari(0);
antennaRfConfig.setrfModeTableIndex(0);
reader.Config.Antennas.setAntennaRfConfig(1, antennaRfConfig);

// Singulation
Antennas.SingulationControl singulationControl;
singulationControl = reader.Config.Antennas.getSingulationControl(1);
singulationControl.setSession(SESSION.GetSession(1));
singulationControl.Action.setInventoryState(INVENTORY_STATE.INVENTORY_STATE_A);
reader.Config.Antennas.setSingulationControl(1, singulationControl);

// DPO
reader.Config.setDPOState(DYNAMIC_POWER_OPTIMIZATION.ENABLE);

// Enable Events
reader.Events.addEventsListener(eventHandler);
reader.Events.setTagReadEvent(true);
reader.Events.setBatteryEvent(true);
reader.Events.setHandheldEvent(true);
reader.Events.setInventoryStopEvent(true);
reader.Events.setInventoryStartEvent(true);
reader.Events.setTagReadEvent(true);
reader.Events.setWPAEvent(true);
reader.Events.setScanDataEvent(true);
reader.Events.setAttachTagDataWithReadEvent(false);

// Trigger
StartTrigger startTrigger = reader.Config.getStartTrigger();
startTrigger.setTriggerType(START_TRIGGER_TYPE.START_TRIGGER_TYPE_HANDHELD);
//startTrigger.Periodic.setPeriod(100);
//startTrigger.Handheld.setHandheldTriggerTimeout(10000);
startTrigger.Handheld.setHandheldTriggerEvent(HANDHELD_TRIGGER_EVENT_TYPE.HANDHELD_TRIGGER_PRESSED);
reader.Config.setStartTrigger(startTrigger);

StopTrigger stopTrigger = reader.Config.getStopTrigger();
stopTrigger.setTriggerType(STOP_TRIGGER_TYPE.STOP_TRIGGER_TYPE_IMMEDIATE);
stopTrigger.Handheld.setHandheldTriggerEvent(HANDHELD_TRIGGER_EVENT_TYPE.HANDHELD_TRIGGER_RELEASED);
stopTrigger.Handheld.setHandheldTriggerTimeout(10000);
reader.Config.setStopTrigger(stopTrigger);

reader.Config.setTriggerMode(ENUM_TRIGGER_MODE.RFID_MODE, false);

// Behaviour
reader.Config.setUniqueTagReport(false);
reader.Config.getDeviceStatus(true, true, true); 

-----------------------------------------------------------------------------

I hope it's more clear for you.

Thanks for you help