com.miz.mizuu.SearchForNetworkShares.java Source code

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Here is the source code for com.miz.mizuu.SearchForNetworkShares.java

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/*
 * Copyright (C) 2014 Michell Bak
 *
 * 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.miz.mizuu;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.content.LocalBroadcastManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;

public class SearchForNetworkShares extends Activity {

    private ListView list;
    private NetworkAdapter adapter;
    private TextView status;
    private ProgressBar pbar;
    private boolean running = true;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.simple_list);

        pbar = (ProgressBar) findViewById(R.id.progressBar);

        status = (TextView) findViewById(R.id.overviewMessage);

        list = (ListView) findViewById(R.id.listView1);
        adapter = new NetworkAdapter();
        list.setAdapter(adapter);
        list.setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
                sendBroadcast(arg2);
            }
        });

        new Thread() {
            @Override
            public void run() {
                ExecutorService executor = Executors.newFixedThreadPool(10);
                for (int dest = 0; dest < 255; dest++) {
                    String host = "192.168.1." + dest;
                    executor.execute(pingRunnable(host));
                }

                executor.shutdown();
                try {
                    executor.awaitTermination(60 * 1000, TimeUnit.MILLISECONDS);
                } catch (InterruptedException ignored) {
                }

                if (running)
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            pbar.setVisibility(View.GONE);
                            status.setVisibility(View.GONE);
                        }
                    });
            }
        }.start();
    }

    private void sendBroadcast(int number) {
        Intent i = new Intent("mizuu-network-search");
        i.putExtra("ip", ((NetworkAdapter) list.getAdapter()).getHost(number));
        LocalBroadcastManager.getInstance(this).sendBroadcast(i);
        running = false;
        finish();
    }

    private Runnable pingRunnable(final String host) {
        return new Runnable() {
            public void run() {
                if (isReachableByPing(host)) {
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            ((NetworkAdapter) list.getAdapter()).addHost(host);
                        }
                    });
                }
            }
        };
    }

    public static boolean isReachableByPing(String host) {
        try {
            Process myProcess = Runtime.getRuntime().exec("ping -c 1 " + host);
            myProcess.waitFor();

            if (myProcess.exitValue() == 0)
                return true;
        } catch (Exception e) {
        }

        return false;
    }

    static class ViewHolder {
        TextView name, desc;
        ImageView icon;
    }

    private class NetworkAdapter extends BaseAdapter {

        private LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        private ArrayList<String> hosts = new ArrayList<String>();

        @Override
        public int getCount() {
            return hosts.size();
        }

        public void addHost(String host) {
            hosts.add(host);
            notifyDataSetChanged();
        }

        public String getHost(int count) {
            if (count > hosts.size())
                return "";
            return hosts.get(count);
        }

        @Override
        public Object getItem(int position) {
            return null;
        }

        @Override
        public long getItemId(int position) {
            return 0;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder holder;

            if (convertView == null) {
                convertView = inflater.inflate(R.layout.file_list_item, null);
                holder = new ViewHolder();
                holder.name = (TextView) convertView.findViewById(R.id.text1);
                holder.desc = (TextView) convertView.findViewById(R.id.size);
                holder.icon = (ImageView) convertView.findViewById(R.id.icon);
                convertView.setTag(holder);
            } else {
                holder = (ViewHolder) convertView.getTag();
            }

            holder.name.setText(hosts.get(position));
            holder.desc.setVisibility(View.GONE);
            holder.icon.setImageResource(R.drawable.ic_folder_open_white_24dp);

            return convertView;
        }
    }
}