Andrew from Esri support was very helpful. To do "application" authentication (without a user name and password) using your app id and secret key you need something like the code below. However, there is a bug (BUG-000092420) in the android sdk and code below does not work at the present time. I'm being told that the fix may make in into the Quartz final release.
private class AppLoginTask extends AsyncTask<Void, Void, Void> {
@Override
protected Void doInBackground(Void... params) {
Log.d("MyApp", "AppLoginTask");
Portal p = new Portal("https://www.arcgis.com", null);
try {
p.doOAuthAppAuthenticate(APP_SECRET, APP_ID, new CallbackListener<Portal>() {
@Override
public void onCallback(Portal portal) {
Log.d("MyApp", "login callback");
//mCreds = new UserCredentials();
mCreds = portal.getCredentials();
setMapDataMode(MapDataMode.ONLINE);
}
@Override
public void onError(Throwable throwable) {
Log.e("MyApp", "login error");
}
});
} catch (Exception e) {
Log.d("MyApp", "login exception");
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void results) {
Log.d("MyApp", "login post execute");
//setMapDataMode(MapDataMode.ONLINE);
}
}
