Android：ping

 这些天用ping代码的时候发现之前的ping部分代码有大问题～就找了一个ping，使用的命令行，测了下，效果不错，可以用

 public static boolean ping3(String address, int pingTimes, int timeOut) {
        Process process = null;
        try {
            process = Runtime.getRuntime().exec( "ping "  + "-c " + pingTimes + " -w " + timeOut+ " "+address);
            InputStreamReader r = new InputStreamReader(process.getInputStream());
            LineNumberReader returnData = new LineNumberReader(r);
            String returnMsg="";
            String line = "";
            while ((line = returnData.readLine()) != null) {
                System.out.println(line);
                returnMsg += line;
            }
            if(returnMsg.indexOf("100% packet loss")!=-1){
                System.out.println("与 " +address +" 连接不畅通.");
                return  false;
            } else{
                System.out.println("与 " +address +" 连接畅通.");
                return true;
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return false;

    }

调用

if (ping3("www.baidu.com",2,2)) {
    Log.e(TAG, "有网络，确定可用");
} else {
    Log.e(TAG, "网络不可用");
}