var intent = Intent()
intent.setAction("com.example.broadcast.MY_NOTIFICATION")
intent.putExtra("data", "Notice me!")

// android:priority attribute or IntentFilter.setPriority()

sendBroadcast(intent)

// restrict broadcasts to the set of apps that hold certain permissions
sendBroadcast(intent, Manifest.permission.SEND_SMS)

/*
<receiver android:name=".YourBrodcastReceiverClass"  android:exported="true">
  <intent-filter>
    <action android:name="com.example.broadcast.MY_NOTIFICATION"/>
  </intent-filter>
</receiver>
*/