安卓程序检测现在的网络状况

判断WiFi是否连接

 public boolean isNetworkConnected(Context context) {
        if (context != null) {
            ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();
            if (mNetworkInfo != null) {
                return mNetworkInfo.isAvailable();
            }
        }
        return false;
    }

判断是否有外网连接(普通方法不能判断外网的网络是否连接,比如连接上局域网)

/* 
     * @category 判断是否有外网连接(普通方法不能判断外网的网络是否连接,比如连接上局域网)
     * @return
     */
    public static final boolean ping() {

        String result = null;
        try {
            String ip = "www.baidu.com";// 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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标签: Android 安卓网络 安卓检测网络

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