Get Scanner Status

GET_SCANNER_STATUS

Introduced in DataWedge 6.5.

Returns the status of the scanner currently selected by DataWedge as the default.

Function Prototype

Intent i = new Intent();
i.setAction("com.symbol.datawedge.api.ACTION");
i.putExtra("com.symbol.datawedge.api.GET_SCANNER_STATUS", "");

Parameters

ACTION [String]: "com.symbol.datawedge.api.ACTION"

EXTRA_DATA [String]: "com.symbol.datawedge.api.GET_SCANNER_STATUS"

EXTRA VALUE: Empty string

Return Values

Returns a String of the name of the active DataWedge Profile

EXTRA NAME: "com.symbol.datawedge.api.RESULT_SCANNER_STATUS"

EXTRA TYPE [String]: [ ] Possible values:

• WAITING - Scanner is ready to be triggered
• SCANNING - Scanner is emitting a scanner beam
• DISABLED - Scanner is disabled
• CONNECTED - An external (Bluetooth or serial) scanner is connected
• DISCONNECTED - The external scanner is disconnected

Error and debug messages are logged to the Android logging system, which can be viewed and filtered by the logcat command. Use logcat from an ADB shell to view the log messages:

$ adb logcat -s DWAPI

Error messages are logged for invalid actions and parameters.

Example Code

Query Scanner Status

//Sending the intent to query scanner status
    Intent i = new Intent();
    i.setAction("com.symbol.datawedge.api.ACTION");
    i.putExtra("com.symbol.datawedge.api.GET_SCANNER_STATUS","");
    i.putExtra("SEND_RESULT","true");
    i.putExtra("com.symbol.datawedge.api.RESULT_CATEGORY","android.intent.category.DEFAULT");
    this.sendBroadcast(i);

// call in onResume()
private void registerReceivers(){
    IntentFilter filter = new IntentFilter();
    filter.addAction("com.symbol.datawedge.api.RESULT_ACTION");
    filter.addCategory(Intent.CATEGORY_DEFAULT);
    registerReceiver(receiver,filter);
}

//call in onPause()
private void unRegisterReceivers(){
    unregisterReceiver(receiver);
}

Receive Query Results

// Receiving the results 
class ResultIntentReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
        if(intent.hasExtra("com.symbol.datawedge.api.RESULT_SCANNER_STATUS")) {
            String scannerStatus = intent.getStringExtra("com.symbol.datawedge.api.RESULT_SCANNER_STATUS");
            Log.d(TAG,"Scanner status:"+scannerStatus);
        }
    };
}

    private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver(){
    @Override
    public void onReceive(Context context, Intent intent){

    if (intent != null) {
        String command = intent.getStringExtra("COMMAND");
        String commandidentifier = intent.getStringExtra("COMMAND_IDENTIFIER");
        String result = intent.getStringExtra("RESULT");
        Bundle bundle = new Bundle();
        String resultInfo = "";
        if (intent.hasExtra("RESULT_INFO")) {
            bundle = intent.getBundleExtra("RESULT_INFO");
            Set<String> keys = bundle.keySet();
            for (String key : keys) {
                resultInfo += key + ": " + bundle.getString(key) + "\n";
            }
        }
        String text = "Command: " + command + "\n" +
                "Result: " + result + "\n" +
                "Result Info: \n" + resultInfo + "\n" +
                "CID:" + commandidentifier;

        Log.d("TAG", "#DataWedgeTestApp# \nCommand: " + command + "\nResult: " + result + "\nReason:\n" + resultInfo);
        Toast.makeText(context, text, Toast.LENGTH_LONG).show();
        }
    };
};

SEE ALSO:

Zebra Support Central | Integrator Guides, Product Manuals, Software Downloads and Support

LaunchPad | Zebra Developer Community

Intent | Android Developers

Intents and Intent Filters | Android Developers

Android Intents | Tutorial