Android执行ping命令检查网络
【摘要】 因为ping要用到网络请求，所以要在AndroidManifest.xml加入网络权限：
<uses-permission android:name="android.permission.INTERNET"/>
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1、准备好ping命令
将IP或域名和一些参数组合成一条ping命令：
private String spellPing(Stri...
因为ping要用到网络请求，所以要在AndroidManifest.xml加入网络权限：
<uses-permission android:name="android.permission.INTERNET"/>
- 1
1、准备好ping命令
将IP或域名和一些参数组合成一条ping命令：
private String spellPing(String ip) { String countCmd = " -c 4 "; String sizeCmd = " -s 64 "; String timeCmd = " -i 1 "; return "ping" + countCmd + timeCmd + sizeCmd + ip; }
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2、执行ping命令
执行ping命令就是通过使用Runtime.getRuntime().exec(ping)。
Runtime.getRuntime().exec()可以执行各种各样的命令。
private void executePingCmd(String pingCmd){ executorService = Executors.newSingleThreadExecutor(); executorService.execute(new Thread(new PingTask(pingCmd, pingHandler, 1))); } // 创建ping任务 private class PingTask implements Runnable { private String ping; private PingHandler pingHandler; private long delay; public PingTask(String ping, PingHandler pingHandler, long delay) { this.ping = ping; this.pingHandler = pingHandler; this.delay = delay; } @Override public void run() { Process process = null; BufferedReader successReader = null; BufferedReader errorReader = null; try { // 执行ping命令 process = Runtime.getRuntime().exec(ping); // success successReader = new BufferedReader(new InputStreamReader(process.getInputStream())); // error errorReader = new BufferedReader(new InputStreamReader(process.getErrorStream())); String lineStr; while ((lineStr = successReader.readLine()) != null) { // receive Message msg = pingHandler.obtainMessage(); msg.obj = lineStr + "\r\n"; msg.what = 10; msg.sendToTarget(); } while ((lineStr = errorReader.readLine()) != null) { // receive Message msg = pingHandler.obtainMessage(); msg.obj = lineStr + "\r\n"; msg.what = 10; msg.sendToTarget(); } Thread.sleep(delay * 1000); } catch (Exception e) { e.printStackTrace(); } finally { try { if (successReader != null) { successReader.close(); } if (errorReader != null) { errorReader.close(); } } catch (IOException e) { e.printStackTrace(); } if (process != null) { process.destroy(); } } } }
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3、显示执行结果
通过Handler来通知主线程通知更新UI。
private static class PingHandler extends Handler { private WeakReference<MainActivity> weakReference; public PingHandler(MainActivity activity) { this.weakReference = new WeakReference<>(activity); } @Override public void handleMessage(@NonNull Message msg) { switch (msg.what) { case 10: // 3、将结果显示出来 String resultMsg = (String) msg.obj; weakReference.get().pingAdapter.addString(resultMsg); weakReference.get().mRecylerView.scrollToPosition(weakReference.get().pingAdapter.getItemCount() - 1); break; default: break; } } }
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文章来源: blog.csdn.net，作者：WongKyunban，版权归原作者所有，如需转载，请联系作者。
原文链接：blog.csdn.net/weixin_40763897/article/details/100134430
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