/** * @類名:NetUtil * @類描述:網絡判斷處理類 * @創建時間:2015年2月12日-上午9:34:32 * @修改人: * @修改時間: * @修改備注: * @版本: */public class NetUtil {  /* 網絡狀態 */  public static boolean isNet = true;  public static enum netType  {    wifi, CMNET, CMWAP, noneNet  }  /**   * @方法說明:判斷WIFI網絡是否可用   * @方法名稱:isWifiConnected   * @param context   * @return   * @返回值:boolean   */  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;  }  /**   * @方法說明:判斷MOBILE網絡是否可用   * @方法名稱:isMobileConnected   * @param context   * @return   * @返回值:boolean   */  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;  }  /**   * @方法說明:獲取當前網絡連接的類型信息   * @方法名稱:getConnectedType   * @param context   * @return   * @返回值:int   */  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;  }  /**   * @方法說明:獲取當前的網絡狀態 -1：沒有網絡 1：WIFI網絡2：wap 網絡3：net網絡   * @方法名稱:getAPNType   * @param context   * @return   * @返回值:netType   */  public static netType getAPNType(Context context)  {    ConnectivityManager connMgr = (ConnectivityManager) context        .getSystemService(Context.CONNECTIVITY_SERVICE);    NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();    if (networkInfo == null)    {      return netType.noneNet;    }    int nType = networkInfo.getType();    if (nType == ConnectivityManager.TYPE_MOBILE)    {      if (networkInfo.getExtraInfo().toLowerCase().equals("cmnet"))      {        return netType.CMNET;      }      else      {        return netType.CMWAP;      }    } else if (nType == ConnectivityManager.TYPE_WIFI)    {      return netType.wifi;    }    return netType.noneNet;  }  /**   * @方法說明:判斷是否有網絡連接   * @方法名稱:isNetworkConnected   * @param context   * @return   * @返回值:boolean   */  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;  }  /**   * @方法說明:網絡是否可用   * @方法名稱:isNetworkAvailable   * @param context   * @return   * @返回值:boolean   */  public static boolean isNetworkAvailable(Context context)  {    ConnectivityManager mgr = (ConnectivityManager) context        .getSystemService(Context.CONNECTIVITY_SERVICE);    NetworkInfo[] info = mgr.getAllNetworkInfo();    if (info != null)    {      for (int i = 0; i < info.length; i++)      {        if (info[i].getState() == NetworkInfo.State.CONNECTED)        {          return true;        }      }    }    return false;  }  /**   * @方法說明:判斷是否是手機網絡   * @方法名稱:is3GNet   * @param context   * @return   * @返回值:boolean   */  public static boolean is3GNet(Context context) {    ConnectivityManager connectivityManager = (ConnectivityManager) context        .getSystemService(Context.CONNECTIVITY_SERVICE);    NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();    if (activeNetInfo != null        && activeNetInfo.getType() == ConnectivityManager.TYPE_MOBILE) {      return true;    }    return false;  }}