DiscoverySetup.java

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/*
 * Copyright (C) 2013 Yujin Robot.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.github.rosjava.android_extras.ros_master_browser;

import android.content.Context;
import com.github.rosjava.zeroconf_jmdns_suite.jmdns.Zeroconf;
import android.app.ProgressDialog;
import android.os.AsyncTask;

public class DiscoverySetup extends AsyncTask<Zeroconf, String, Void> {

        private ProgressDialog commencing_dialog; 
        private final Context context;

        public DiscoverySetup(Context context) {
                this.context = context;
        }
        
    protected Void doInBackground(Zeroconf... zeroconfs) {
        if ( zeroconfs.length == 1 ) {
            Zeroconf zconf = zeroconfs[0];
            android.util.Log.i("zeroconf", "*********** Discovery Commencing **************");
            zconf.addListener("_ros-master._tcp","local");
            zconf.addListener("_ros-master._udp","local");
        } else {
                android.util.Log.i("zeroconf", "Error - DiscoveryTask::doInBackground received #zeroconfs != 1");
        }
        return null;
    }

    protected void onPreExecute() {
                commencing_dialog = ProgressDialog.show(context,
                                "Zeroconf Discovery", "Adding listeners...", true);
    }
    protected void onPostExecute(Void result) {
        commencing_dialog.dismiss();
    }
}