DiscoveryAdapter.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 java.util.ArrayList;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.github.rosjava.android_extras.ros_master_browser.R;
import com.github.rosjava.zeroconf_jmdns_suite.jmdns.DiscoveredService;

import java.net.Inet4Address;
import java.net.Inet6Address;

public class DiscoveryAdapter extends ArrayAdapter<DiscoveredService> {

        private final Context context;
        private ArrayList<DiscoveredService> discovered_services;

    public DiscoveryAdapter(Context context, ArrayList<DiscoveredService> discovered_services) {
        super(context, R.layout.row_layout,discovered_services); // pass the list to the super
        this.context = context;
        this.discovered_services = discovered_services;  // keep a pointer locally so we can play with it
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View v = convertView;
        if (v == null) {
            LayoutInflater vi = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            v = vi.inflate(R.layout.row_layout, null);
        }
        DiscoveredService discovered_service = discovered_services.get(position);
        if (discovered_service != null) {
                TextView tt = (TextView) v.findViewById(R.id.service_name);
                TextView bt = (TextView) v.findViewById(R.id.service_detail);
                if (tt != null) {
                    tt.setText(discovered_service.name);                            
                }
                if( bt != null ) {
                        String result = "";
                        for ( String address : discovered_service.ipv4_addresses ) {
                                if ( result.equals("") ) {
                                        result += address + ":" + discovered_service.port;
                                } else { 
                                        result += "\n" + address + ":" + discovered_service.port;
                                }
                        }
                        for ( String address : discovered_service.ipv6_addresses ) {
                                if ( result.equals("") ) {
                                        result += address + ":" + discovered_service.port;
                                } else { 
                                        result += "\n" + address + ":" + discovered_service.port;
                                }
                        }
                    bt.setText(result);
                }
                ImageView im = (ImageView) v.findViewById(R.id.icon);
                if ( im != null ) {
                        if ( discovered_service.type.equals("_ros-master._tcp" ) ||
                                        discovered_service.type.equals("_ros-master._udp" ) ) {
                        im.setImageDrawable(context.getResources().getDrawable(R.drawable.turtle));
                        } else {
                                // unknown
                        im.setImageDrawable(context.getResources().getDrawable(R.drawable.conductor));
                        }
                }
        }
        return v;
    }
}