App判断用户是否联网是很普遍的需求,易采站长站为您分析Android中判断网络连接状态的方法,感兴趣的朋友可以参考一下
App判断用户是否联网是很普遍的需求,实现思路大概有下面几种
- 利用Android自带的ConnectivityManager类
- 有时候连上了wifi,但这个wifi是上不了网的,我们可以通过ping www.baidu.com来判断是否可以上网
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也可以利用get请求访问www.baidu.com,如果get请求成功,说明可以上网
1、判断网络是否已经连接
// check all network connect, WIFI or mobile public static boolean isNetworkAvailable(final Context context) { boolean hasWifoCon = false; boolean hasMobileCon = false; ConnectivityManager cm = (ConnectivityManager) context.getSystemService(context.CONNECTIVITY_SERVICE); NetworkInfo[] netInfos = cm.getAllNetworkInfo(); for (NetworkInfo net : netInfos) { String type = net.getTypeName(); if (type.equalsIgnoreCase("WIFI")) { LevelLogUtils.getInstance().i(tag, "get Wifi connection"); if (net.isConnected()) { hasWifoCon = true; } } if (type.equalsIgnoreCase("MOBILE")) { LevelLogUtils.getInstance().i(tag, "get Mobile connection"); if (net.isConnected()) { hasMobileCon = true; } } } return hasWifoCon || hasMobileCon; }2、利用 ping 判断 Internet 能够 请求成功
Note:有时候连上了网络, 但却上不去外网// network available cannot ensure Internet is available public static boolean isNetWorkAvailable(final Context context) { Runtime runtime = Runtime.getRuntime(); try { Process pingProcess = runtime.exec("/system/bin/ping -c 1 www.baidu.com"); int exitCode = pingProcess.waitFor(); return (exitCode == 0); } catch (Exception e) { e.printStackTrace(); } return false; }










