Offer 100% user-filled hash-map for P2P announcements about cpt HOT 1 CLOSED

Implemented in cpt-test:1.0.7 (so far).

Basically you have to override these two methods in CptReceiver:

protected void onSupplyWifiP2pDnsSdTxtRecords(Context context) {
    Bundle bundle = new Bundle();
    bundle.putString("key1", "value1");
    bundle.putString("key2", "value2");
    Communication.addP2pDnsSdRecord(context, "_ohai", bundle);
}

protected void onWifiP2pDnsSdTxtRecordAvailable(Context context, String instanceName, Bundle record) {
    String value1 = record.get("key1");
}

The supply method is needed because the wifi stack has some corner cases when the announced data could be lost and CPT needs to ask you for a "refresh" in such case. Of course, should you want to change the content of the map, you just call:

Communication.addP2pDnsSdRecord(context, "_ohai", bundle);

from your app -- previous content for "_ohai" will be overwritten. Don't forget to supply updated data in onSupplyWifiP2pDnsSdTxtRecords too! There isn't any limit on the number of instances, except hardware/OS limitations. So you can have "_ohai1", "_ohai2" etc with different content.

Should you want to remove some of it:

Communication.removeP2pDnsSdRecord(context, "_ohai");

from cpt.