android 获取局域网内其他手机的ip

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public class WifiDemoActivity extends Activity { private Button mTestButton; private WifiManager mWifiManager; private TextView iptextview; staticintthreadCount = 0 ; booleanisOver = false ; staticintpingSize = 0 ; public ArrayList> ping; // ping 后的结果集 private ListView showiplistview; public ArrayList> getPing() { // 用来得到ping后的结果集 returnping; } public void setPing(ArrayList> ping){ this .ping=ping; } @Override protected void onPause() { System.exit( 0 ); finish(); super .onPause(); } @Override public void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.main); ping = new ArrayList>(); iptextview = (TextView) findViewById(R.id.IPTEXTVIEWID); mTestButton = (Button) findViewById(R.id.button1); showiplistview = (ListView) findViewById(R.id.SHOWIPLISTVIEWID); mTestButton.setOnClickListener(mAllClickListener); mWifiManager = (WifiManager) this .getSystemService(Context.WIFI_SERVICE); } @Override protected void onResume() { isOver = true ; mUpdaHandler.sendMessage(createMessage( 10003 , null )); super .onResume(); } private View.OnClickListener mAllClickListener = new View.OnClickListener() { @Override public void onClick(View v) { switch (v.getId()) { case R.id.button1: if (ping.size() > 0 ) { ping.clear(); ((IpAdapter) showiplistview.getAdapter()).setIpData(ping); } new Thread() { public void run() { WifiInfo wifiInfo = mWifiManager.getConnectionInfo(); mWifiManager.getConfiguredNetworks(); List list = mWifiManager .getConfiguredNetworks(); for (WifiConfiguration wifiConfiguration : list) { String ssid = wifiConfiguration.SSID; String mSsid = ssid.substring( 1 , ssid.length() - 1 ); String result = wifiConfiguration.toString(); if (mSsid.equalsIgnoreCase(wifiInfo.getSSID())) { Log.d( "Tag" , wifiConfiguration.toString()); try { int i = result.indexOf( "LinkAddresses" ); int i1 = result.indexOf( "Routes" ); String ipAddress = result .substring(i, i1) .trim() .substring( 16 , result.substring(i, i1) .length() - 6 ); Log.d( "Tag" , ipAddress); int i2 = result.indexOf( "DnsAddresses" ); String mWifiIntAddress = result .substring(i2) .trim() .substring( 15 , result.substring(i2) .length() - 4 ); Log.d( "Tag" , "WifiInetAddresses " + mWifiIntAddress); String[] s = { mWifiIntAddress, ipAddress }; mUpdaHandler.sendMessage(createMessage( 10002 , s)); PingAll(mWifiIntAddress); } catch (Exception e) { Log.e( "Tag" , "erro" + e); } } } } }.start(); break ; default : break ; } } }; public void PingAll(String hostAddress) { // 首先得到本机的IP，得到网段 try { int k = 0 ; k = hostAddress.lastIndexOf( "." ); String ss = hostAddress.substring( 0 , k + 1 ); for ( int i = 1 ; i <= 250 ; i++) { // 对所有局域网Ip String iip = ss + i; creatLog(WifiDemoActivity. class , "PingAll" , iip, null ); Ping(iip); } // 等着所有Ping结束 while (isOver) { Thread.sleep( 3000 ); if (threadCount == 0 ) { isOver = false ; int k1 = 0 ; String result= "" ; result=(String)ping.get( 0 ).get( "ip" ); k1=result.lastIndexOf( "." ); result=result.substring(k1+ 1 ,result.length()); int mResult=Integer.valueOf(result); for (Map map:ping){ String s=(String) map.get( "ip" ); String s1= s.substring(k1+ 1 ,s.length()); int mS1=Integer.valueOf(s1); mResult=mResult>mS1?mResult:mS1; } Log.d( "Tag" , "" +mResult); mUpdaHandler.sendMessage(createMessage( 10003 , null )); } creatLog(WifiDemoActivity. class , "pingall" , "wait......" , null ); } } catch (Exception e) { creatLog(WifiDemoActivity. class , "pingAll" , "" , e); } } public void Ping(String ip) { // 最多30个线程 try { while (threadCount > 30 ) { Thread.sleep( 2 ); } creatLog(WifiDemoActivity. class , "ping" , threadCount + "" , null ); threadCount += 1 ; runPingIPprocess(ip); } catch (Exception e) { creatLog(WifiDemoActivity. class , "ping" , null , e); } } public void runPingIPprocess( final String ipString) { final Thread pingThread = new Thread() { @Override public void run() { try { ／／ping ip地址 Process p = Runtime.getRuntime().exec( "ping -c 1 -w 5 " + ipString); int status = p.waitFor(); if (status == 0 ) { Map map = new HashMap(); creatLog(WifiDemoActivity. class , "runpingIpProcesses" , "true" + ipString, null ); map.put( "ip" , ipString); ping.add(map); pingSize++; if (pingSize > 10 ) { pingSize = 0 ; //setPing(ping); mUpdaHandler .sendMessage(createMessage( 10001 , ping)); Log.d( "Tag" , "you are number" ); } creatLog(WifiDemoActivity. class , "run" , ping.toString(), null ); } else { creatLog(WifiDemoActivity. class , "runpingIPprocess" , "false" , null ); } threadCount--; creatLog(WifiDemoActivity. class , "run now " , threadCount + "" , null ); } catch (Exception e) { threadCount--; creatLog(WifiDemoActivity. class , "runPingIpprocess" , null , e); } finally { } } }; pingThread.start(); } private Handler mUpdaHandler = new Handler() { @Override public void handleMessage(Message msg) { IpAdapter adapter ; switch (msg.what) { case 10001 : try { Log.d( "Tag" , ping.toString() + "over" ); ArrayList> pings = (ArrayList>) msg.obj; adapter = (IpAdapter) showiplistview.getAdapter(); adapter.setIpData(getPing()); creatLog(WifiDemoActivity. class , "10001" , pings + "" , null ); adapter.notifyDataSetChanged(); isOver= true ; } catch (Exception e) { creatLog(WifiDemoActivity. class , "1001" , null , e); } break ; case 10002 : String[] s = (String[]) msg.obj; iptextview.setText( "本机IP:" + s[ 1 ] + "\n路由器IP:" + s[ 0 ]); break ; case 10003 : adapter = new IpAdapter(WifiDemoActivity. this , ping); showiplistview.setAdapter(adapter); break ; default : break ; } } }; public static Message createMessage( int what, Object object) { Message message = new Message(); message.what = what; message.obj = object; return message; } public static void creatLog(Class class1, String where, String data, Exception e) { if (e != null ) { Log.e(class1.getSimpleName() + " " +where, "erro \n" + e); } else if (e == null ) { Log.d(class1.getSimpleName() + " " +where + "" , data + "" ); } } ｝

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