Usage | Handheld Developer

Table of Contents

Keyboard wedge

To you use the RFID app with a existing app that has a input field (e.g. for barcode scanning), you do not need to make any changes to your code.

Make sure to set the Output method to either Paste or Keyboard, enable the Trigger setting and assign one of the hardware keys to F7.

Broadcast

If you just want to receive the tag ID or data in your own code without any additional control, you can use a broadcast receiver.

Make sure to set the Output method to either Broadcast, enable the Trigger setting and assign one of the hardware keys to F7. Register the receiver as shown below:

// Broadcast receiver to barcode data (device == 1) or tag uid (device == 2)
private BroadcastReceiver receiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        if(intent.getAction().equals("com.handheldgroup.anysend.RESULT") == false) return;
        
        // Numeric representation of the tag type
        int type = intent.getIntExtra("type", -1);
        
        // String representation of the tag type
        String typeName = intent.getStringExtra("type_name");
        
        // Data as byte array
        byte[] dataArray = intent.getByteArrayExtra("data");
        
        // Data as String
        String dataString = intent.getStringExtra("string");
    }
};

// Register the receiver
registerReceiver(receiver, new IntentFilter("com.handheldgroup.anysend.RESULT"));

// Broadcast receiver to barcode data (device == 1) or tag uid (device == 2)

private BroadcastReceiver receiver = new BroadcastReceiver() {

@Override

public void onReceive(Context context, Intent intent) {

if(intent.getAction().equals("com.handheldgroup.anysend.RESULT") == false) return;

// Numeric representation of the tag type

int type = intent.getIntExtra("type", -1);

// String representation of the tag type

String typeName = intent.getStringExtra("type_name");

// Data as byte array

byte[] dataArray = intent.getByteArrayExtra("data");

// Data as String

String dataString = intent.getStringExtra("string");

}

};

// Register the receiver

registerReceiver(receiver, new IntentFilter("com.handheldgroup.anysend.RESULT"));

Start and stop scan

If you want to control the start and stop of a scan from your code instead (or in addition to) a hardware button, you can send broadcasts to the RFID app.

public void enableRfid() {
    Intent intent = new Intent("com.handheldgroup.anysend.SET_STATE");
    intent.setPackage("com.handheldgroup.rfid");
    intent.putExtra("device", true);
    sendBroadcast(intent);
}

public void disableRfid() {
    Intent intent = new Intent("com.handheldgroup.anysend.SET_STATE");
    intent.setPackage("com.handheldgroup.rfid");
    intent.putExtra("device", false);
    sendBroadcast(intent);
}

public void enableRfid() {

Intent intent = new Intent("com.handheldgroup.anysend.SET_STATE");

intent.setPackage("com.handheldgroup.rfid");

intent.putExtra("device", true);

sendBroadcast(intent);

}

public void disableRfid() {

Intent intent = new Intent("com.handheldgroup.anysend.SET_STATE");

intent.setPackage("com.handheldgroup.rfid");

intent.putExtra("device", false);

sendBroadcast(intent);

}

Scan activity

If you don’t want to build your own user interface for scanning, you can also directly start the scan activity provided by the app.