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

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

/**
 */
public class InternetUtil {

    private static final String NETIP = "www.baidu.com";

    /**
     * 判斷是否有網(wǎng)絡(luò)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(wǎng)絡(luò)是否可用
     *
     * @param context
     * @return
     */
    public static 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MOBILE網(wǎng)絡(luò)是否可用
     *
     * @param context
     * @return
     */
    public static boolean isMobileConnected(Context context) {
        if (context != null) {
            ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo mMobileNetworkInfo = mConnectivityManager
                    .getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
            if (mMobileNetworkInfo != null) {
                return mMobileNetworkInfo.isAvailable();
            }
        }
        return false;
    }

    /**
     * 獲取當(dāng)前網(wǎng)絡(luò)連接的類型信息
     *
     * @param context
     * @return
     */
    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;
    }

    /**
     * 連接上一個(gè)沒有外網(wǎng)連接的WiFi
     * 或者有線就會(huì)出現(xiàn)極端的情況
     *
     * @return
     */
    public static final boolean ping() {
        String result = null;
        try {
            String ip = NETIP;// ping 的地址填帽，可以換成任何一種可靠的外網(wǎng)
            Process p = Runtime.getRuntime().exec("ping -c 3 -w 100 " + ip);// ping網(wǎng)址3次
            // 讀取ping的內(nèi)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的狀態(tài)
            int status = p.waitFor();
            if (status == 0) {
                result = "success";
                return true;
            } else {
                result = "failed";
                return false;
            }
        } catch (IOException e) {
            result = "IOException";
            return false;
        } catch (InterruptedException e) {
            result = "InterruptedException";
            return false;
        } finally {
            Log.d("----result---", "result = " + result);
        }
    }
}