Android 機頂盒獲取網絡連接方式工具類

        查閱相關資料，封裝了機頂盒獲取網絡方式（有線連接、無線連接）的方法，記錄一下。備註：此工具類並未詳細判斷機頂盒具體的連接類型，例如有線（靜態連接，DHCP，PPPOE，DHCP+）中具體一種，這需要適配底層API接口，涉及到機頂盒芯片類型廠商提供的接口，未做判斷，只是簡單的網絡方式獲取。

package com.fh.loginauth.util;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

public class NetworkUtil {

    /**
     * 判斷是否有網絡連接
     * @param context
     * @return
     */
    public static 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;
    }

    /**
     * 判斷WIFI網絡是否可用
     * @param context
     * @return
     */
    public boolean isWifiConnected(Context context) {
        if (context != null) {
            ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo mWiFiNetworkInfo = mConnectivityManager
                    .getNetworkInfo(ConnectivityManager.TYPE_WIFI);
            if (mWiFiNetworkInfo != null) {
                return mWiFiNetworkInfo.isAvailable();
            }
        }
        return false;
    }

    /**
     * 判斷有線網絡是否可用
     * @param context
     * @return
     */
    public boolean isEthernetConnected(Context context) {
        if (context != null) {
            ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo mEthernetNetworkInfo = mConnectivityManager
                    .getNetworkInfo(ConnectivityManager.TYPE_ETHERNET);
            if (mEthernetNetworkInfo != null) {
                return mEthernetNetworkInfo.isAvailable();
            }
        }
        return false;
    }

    /**
     * 獲取當前網絡連接的類型信息
     * @param context
     * @return 9爲有線  1爲WiFi
     */
    public static int getConnectedType(Context context) {
        if (context != null) {
            ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();
            if (mNetworkInfo != null && mNetworkInfo.isAvailable()) {
                return mNetworkInfo.getType();
            }
        }
        return -1;
    }

    /**
     * 判斷是否有外網連接（普通方法不能判斷外網的網絡是否連接，比如連接上局域網）
     * @author mq
     * @return
     */
    public static final boolean ping() {

        String result = null;
        try {
            String ip = "www.baidu.com";// ping 的地址，可以換成任何一種可靠的外網
            Process p = Runtime.getRuntime().exec("ping -c 3 -w 100 " + ip);// ping網址3次
            // 讀取ping的內容，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);
            }
            LogUtil.d("NetworkUtil", "--ping--result content : " + stringBuffer.toString());
            // ping的狀態
            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 {
            LogUtil.d("NetworkUtil", "result = " + result);
        }
        return false;
    }

}