Dear ,
            I have the following MainActivity class and the app crashes as soon as i call the initializescanner method.All i wanted to do is start the scanner as soon as the app starts.

public class MainActivity implements EMDKListener  {
private BarcodeManager barcodeManager = null;   private Scanner scanner = null;
   private EMDKManager emdkManager = null;

@Overrideprotected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);   setContentView(R.layout.activity_main);
       EMDKResults results = EMDKManager.getEMDKManager(getApplicationContext(), this);        if (results.statusCode != EMDKResults.STATUS_CODE.SUCCESS) {
        //Failed to request the EMDKManager    }
}
@Override   public void onOpened(EMDKManager emdkManager) {
   this.emdkManager = emdkManager;   try {
   // Call this method to enable Scanner and its listeners   initializeScanner();   } catch (ScannerException e) {
  e.printStackTrace();   }

//The EMDK Manager is ready and now you can call other EMDK APIs.   }

private void initializeScanner() throws ScannerException {
   if (scanner == null) {
   barcodeManager = (BarcodeManager) this.emdkManager                              // the app crashes here   .getInstance(EMDKManager.FEATURE_TYPE.BARCODE);
   scanner = barcodeManager.getDevice(BarcodeManager.DeviceIdentifier.DEFAULT);   scanner.triggerType = Scanner.TriggerType.HARD;   scanner.enable();   scanner.read();   }
  }

   @Override   public void onClosed() {
   /* EMDKManager is closed abruptly. Call EmdkManager.release() to free the resources used by the current EMDK instance. */   if (emdkManager != null) {
   emdkManager.release();   emdkManager = null;   }
  }

   @Override   public void onDestroy(){
   super.onDestroy();   if (emdkManager != null) {
   emdkManager.release();   emdkManager = null;   }
   }
}

Error