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DataWedge

112

Return Values

The enumerated list of scanners will be returned via a broadcast Intent. The broadcast Intent action is

"com.symbol.datawedge.api.ACTION_ENUMERATEDSCANNERLIST" and the list of scanners is returned as a

string array (see the example below).

Error and debug messages will be logged to the Android logging system which then can be viewed and filtered by

the logcat command. You can use logcat from an ADB shell to view the log messages, e.g.

Error messages will be logged for invalid actions and parameters.

Example

$ adb logcat -s DWAPI

// first send the intent to enumerate the available scanners on the device

// define action string

String enumerateScanners = "com.symbol.datawedge.api.ACTION_ENUMERATESCANNERS";

// create the intent

Intent i = new Intent();

// set the action to perform

i.setAction(enumerateScanners);

// send the intent to DataWedge

context.this.sendBroadcast(i);

// now we need to be able to receive the enumerate list of available scanners

String enumeratedList = "com.symbol.datawedge.api.ACTION_ENUMERATEDSCANNERLIST";

String KEY_ENUMERATEDSCANNERLIST = "DataWedgeAPI_KEY_ENUMERATEDSCANNERLIST";

// Create a filter for the broadcast intent

IntentFilter filter = new IntentFilter();

filter.addAction(enumeratedList);

registerReceiver(myBroadcastReceiver, filter);

// now we need a broadcast receiver

private BroadcastReceiver myBroadcastReceiver = new BroadcastReceiver() {

@Override

public void onReceive(Context context, Intent intent) {

String action = intent.getAction();

if (action.equals(enumeratedList)) {

Bundle b = intent.getExtras();

String[] scanner_list = b.getStringArray(KEY_ENUMERATEDSCANNERLIST);

}

};

Zebra TC25 Integrator Guide

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