Android 判断是否能真正上网的实例详解

检测网络是否连接

实现代码：

/** * 检测网络是否连接 * * @return */privateboolean isNetworkAvailable() { // 得到网络连接信息 ConnectivityManager manager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); // 去进行判断网络是否连接 if(manager.getActiveNetworkInfo() != null) { returnmanager.getActiveNetworkInfo().isAvailable(); } returnfalse;}

ping的状态

public static final boolean ping() { String result = null; try { String ip = "";// ping 的地址，可以换成任何一种可靠的外网 Process p = Runtime.getRuntime().exec("ping -c 3 -w 100 " + ip);// ping网址3次 // 读取ping的内容，可以不加 InputStream input = p.getInputStream(); BufferedReader in = new BufferedReader(new InputStreamReader(input)); StringBuffer stringBuffer = new StringBuffer(); String content = ""; while ((content = in.readLine()) != null) { stringBuffer.append(content); } Log.d("------ping-----", "result content : " + stringBuffer.toString()); // ping的状态 int status = p.waitFor(); if (status == 0) { result = "success"; return true; } else { result = "failed"; } } catch (IOException e) { result = "IOException"; } catch (InterruptedException e) { result = "InterruptedException"; } finally { Log.d("----result---", "result = " + result); } return false;}

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