Hi,
 
I have two activities using EMDK. In the first one I initialize EMDK in onCreate method, this works properly. In this first activity I have a button, that starts another activity like this:
 
public void btnDoneOnClick(View view) {
        Intent intent = new Intent(this, LocationUnitsListActivity.class);
        intent.putExtra(Constants.LocationKey, barcode);
        intent.putExtra(Constants.LocationOption, selectedOption);
        startActivity(intent);
        //finish();
    }
 
In onDestroy method of this first activity I do this:
 
@Override
    protected void onDestroy() {
        super.onDestroy();
        if (emdkManager != null) {
 
 
            // Clean up the objects created by EMDK manager
            emdkManager.release();
            emdkManager = null;
        }
    }
 
In the new started activity (the second one) I initialize EMDK again. No error occurs during initialization but barcode scanner stays inactive. So I tried to uncomment last line of the btnDonOnClick method. This made a little progress. Barcode reader is active now also in second activity but in this second activity listener's event DoScannerDataPostExecute is not fired. So the scanned barcodes goes to nowhere and I am not able to catch them in my activity.
 
Here is architecture of my application:
 
class EMDKBaseActivity{
     protected void initializeEMDK(){
          EMDKResults results = EMDKManager.getEMDKManager(
                getApplicationContext(), this);
 
             if (results.statusCode != EMDKResults.STATUS_CODE.SUCCESS) {
                 Toast t = Toast.makeText(this, "EMDKManager Request Failed", Toast.LENGTH_LONG);
                 t.show();
             }
     }
 
     public void onOpened(EMDKManager emdkManager){
      ....
     }
 
     public void onClosed(){
          ...
     }
 
     public void onStatus(StatusData sd){
          ...
     }
 
     public void onData(ScanDataCollection scanDataCollection){
          new AsyncScannerDataUpdate().execute(scanDataCollection);
     }
    
     protected void onStop(){
          ...
     }
 
     @Override
    protected void onDestroy() {
        super.onDestroy();
        if (emdkManager != null) {
 
 
            // Clean up the objects created by EMDK manager
            emdkManager.release();
            emdkManager = null;
        }
    }
}
 
    private class AsyncScannerDataUpdate extends AsyncTask {
 
 
        @Override
        protected ArrayList doInBackground(ScanDataCollection... params) {
            ArrayList result = new ArrayList();
 
 
            try {
                // Starts an asynchronous Scan. The method will not turn ON the
                // scanner. It will, however, put the scanner in a state in
                // which
                // the scanner can be turned ON either by pressing a hardware
                // trigger or can be turned ON automatically.
                scanner.read();
 
 
                ScanDataCollection scanDataCollection = params[0];
 
 
                // The ScanDataCollection object gives scanning result and the
                // collection of ScanData. So check the data and its status
                if (scanDataCollection != null
                        && scanDataCollection.getResult() == ScannerResults.SUCCESS) {
 
 
                    ArrayList scanData = scanDataCollection
                            .getScanData();
 
 
                    // Iterate through scanned data and prepare the statusStr
                    for (ScanData data : scanData) {
                        // Get the scanned data
                        String barcodeData = data.getData();
                        result.add(barcodeData);
                    }
                }
 
 
            } catch (ScannerException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
 
 
            // Return result to populate on UI thread
            return result;
        }
 
 
        @Override
        protected void onPostExecute(ArrayList result) {
            DoScannerDataPostExecute(result);
        }
    }
 
 
class FirstActivity extends EMDKBaseActivity{
     public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
 
          ....
 
        initializeEMDK();
    }
 
@Override
 
    protected void DoScannerDataPostExecute(ArrayList result) {
          //this works correctly
    }
 
     public void btnDoneOnClick(View view) {
        Intent intent = new Intent(this, SecondActivity.class);
        startActivity(intent);
        finish();
    }
}
 
class SecondActivity extends EMDKBaseActivity{
     public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
 
          ....
 
        initializeEMDK(); //no error occurs
    }
 
    protected void DoScannerDataPostExecute(ArrayList result) {
          //this DOES NOT work at all. This is not even fired
    }
 
}