Java Code Examples for android.net.NetworkInfo

/**
 * 获取网络状态，wifi,wap,2g,3g.
 *
 * @param context 上下文
 * @return int 网络状态 {@link #NETWORK_TYPE_2G},{@link #NETWORK_TYPE_3G},
 * {@link #NETWORK_TYPE_INVALID},{@link #NETWORK_TYPE_WAP},{@link #NETWORK_TYPE_WIFI}
 */
public static int getNetWorkType(Context context) {
  int netWorkType = -1;
  ConnectivityManager manager =
      (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
  NetworkInfo networkInfo = manager.getActiveNetworkInfo();
  if (networkInfo != null && networkInfo.isConnected()) {
    String type = networkInfo.getTypeName();
    if (type.equalsIgnoreCase("WIFI")) {
      netWorkType = NETWORK_TYPE_WIFI;
    } else if (type.equalsIgnoreCase("MOBILE")) {
      String proxyHost = android.net.Proxy.getDefaultHost();
      netWorkType = TextUtils.isEmpty(proxyHost) ? (isFastMobileNetwork(context) ? NETWORK_TYPE_3G
          : NETWORK_TYPE_2G) : NETWORK_TYPE_WAP;
    }
  } else {
    netWorkType = NETWORK_TYPE_INVALID;
  }
  return netWorkType;
}
 

/**
 * Get the current active network status.
 *
 * @return 0: no network
 * 1: WIFI
 * 2: WAP
 * 3: CMNET
 */
public int getNetWorkType() {
    int netType = 0;
    ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService
            (CONNECTIVITY_SERVICE);
    NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
    if (networkInfo == null) return netType;

    int nType = networkInfo.getType();
    if (nType == ConnectivityManager.TYPE_MOBILE) {
        String extraInfo = networkInfo.getExtraInfo();
        if (!StringUtils.isEmpty(extraInfo)) {
            if (extraInfo.toLowerCase().equals("cmnet"))
                netType = NETTYPE_CMNET;
            else
                netType = NETTYPE_CMWAP;
        }
    } else if (nType == ConnectivityManager.TYPE_WIFI) {
        netType = NETTYPE_WIFI;
    }

    return netType;

}
 

private int convertType(NetworkInfo activeNetworkInfo) {
    if (activeNetworkInfo == null) {
        return TYPE_NOT_CONNECTED;
    }
    switch (activeNetworkInfo.getType()) {
        case ConnectivityManager.TYPE_WIFI:
            return TYPE_WIFI;
        case ConnectivityManager.TYPE_MOBILE:
            return TYPE_MOBILE;
        case ConnectivityManager.TYPE_ETHERNET:
            return TYPE_ETHERNET;
        case ConnectivityManager.TYPE_BLUETOOTH:
            return TYPE_BLUETOOTH;
        case ConnectivityManager.TYPE_VPN:
            return TYPE_VPN;
    }
    return -1;
}
 

public static boolean isConnected(Context context) {

        if (context == null) return false;

        ConnectivityManager connectivityManager
                = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        if (connectivityManager != null) {
            NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();

            if (activeNetworkInfo == null)
                return false;

            return ((activeNetworkInfo != null) && (activeNetworkInfo
                    .isConnectedOrConnecting()));
        }

        return false;
    }
 

/**
 * 判断当前手机是否连上Wifi.
 *
 * @param context
 *            上下文
 * @return boolean 是否连上网络
 * 
 *         *
 */
static 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) {
			if (mWiFiNetworkInfo.isAvailable()) {
				return mWiFiNetworkInfo.isConnected();
			} else {
				return false;
			}
		}
	}
	return false;
}
 

@Override
public void onReceive(Context context, Intent intent) {
    String action = intent.getAction();

    if (!action.equals(ConnectivityManager.CONNECTIVITY_ACTION) || mListener == null) {
        return;
    }

    ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
    boolean networkAvailable = networkInfo != null && networkInfo.isConnected();

    if (networkAvailable) {
        mState = State.CONNECTED;
    } else {
        mState = State.NOT_CONNECTED;
    }

    mMainHandler.post(mConnectivityRunnable);
}
 

public static NetworkProxy getProxy(Context context) {
    if (context == null) {
        return null;
    }
    ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService("connectivity");
    if (connectivityManager == null) {
        return null;
    }
    NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
    if (activeNetworkInfo == null) {
        return null;
    }
    if (activeNetworkInfo.getType() == 0) {
        Object b = b(context);
        int a = a(context);
        if (!TextUtils.isEmpty(b) && a >= 0) {
            return new NetworkProxy(b, a);
        }
    }
    return null;
}
 

public static boolean isNetwork(Context context) {
    boolean isnetwork = false;
    ConnectivityManager manager = (ConnectivityManager) context
            .getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo networkinfo = manager.getActiveNetworkInfo();
    if (networkinfo == null || !networkinfo.isAvailable()) {
        isnetwork = false;
    } else {
        int type = networkinfo.getType();
        if (type == ConnectivityManager.TYPE_MOBILE
                || type == ConnectivityManager.TYPE_WIFI) {
            isnetwork = true;

        }
    }
    return isnetwork;
}
 

private static void initConnectionStatus() {
	ConnectivityManager cm = (ConnectivityManager)ClientProperties.getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);

	if(cm == null) {
		return;
	}

	NetworkInfo ni  = cm.getActiveNetworkInfo();

	if(ni != null && ni.isConnected()) {
		_connected = 1;
		_wifi = ni.getType() == ConnectivityManager.TYPE_WIFI;

		if(!_wifi) {
			TelephonyManager tm = (TelephonyManager)ClientProperties.getApplicationContext().getSystemService(Context.TELEPHONY_SERVICE);
			_networkType = tm.getNetworkType();
		}
	} else {
		_connected = 0;
	}
}
 

/**
 * Start to connect to a specific wifi network
 */
private void connectToSpecificNetwork() {
    final WifiManager wifi = (WifiManager) getContext().getApplicationContext().getSystemService(Context.WIFI_SERVICE);
    ConnectivityManager cm = (ConnectivityManager) getContext().getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo networkInfo = cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
    WifiInfo wifiInfo = wifi.getConnectionInfo();
    if (networkInfo.isConnected() && wifiInfo.getSSID().replace("\"", "").equals(getWifiSSID())) {
        return;
    }
    else {
        wifi.disconnect();
    }
    progressDialog = ProgressDialog.show(getContext(), getContext().getString(R.string.connecting), String.format(getContext().getString(R.string.connecting_to_wifi), getWifiSSID()));
    taskHandler = worker.schedule(new TimeoutTask(), getSecondsTimeout(), TimeUnit.SECONDS);
    scanReceiver = new ScanReceiver();
    getContext().registerReceiver(scanReceiver
            , new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
    wifi.startScan();
}
 

/**
 * Determine the type of connection
 *
 * @param info the network info so we can determine connection type.
 * @return the type of mobile network we are on
 */
private String getType(NetworkInfo info) {
    if (info != null) {
        String type = info.getTypeName();

        if (type.toLowerCase().equals(WIFI)) {
            return TYPE_WIFI;
        }
        else if (type.toLowerCase().equals(MOBILE)) {
            type = info.getSubtypeName();
            if (type.toLowerCase().equals(GSM) ||
                    type.toLowerCase().equals(GPRS) ||
                    type.toLowerCase().equals(EDGE)) {
                return TYPE_2G;
            }
            else if (type.toLowerCase().startsWith(CDMA) ||
                    type.toLowerCase().equals(UMTS) ||
                    type.toLowerCase().equals(ONEXRTT) ||
                    type.toLowerCase().equals(EHRPD) ||
                    type.toLowerCase().equals(HSUPA) ||
                    type.toLowerCase().equals(HSDPA) ||
                    type.toLowerCase().equals(HSPA)) {
                return TYPE_3G;
            }
            else if (type.toLowerCase().equals(LTE) ||
                    type.toLowerCase().equals(UMB) ||
                    type.toLowerCase().equals(HSPA_PLUS)) {
                return TYPE_4G;
            }
        }
    }
    else {
        return TYPE_NONE;
    }
    return TYPE_UNKNOWN;
}
 

/**
 * Determine whether to open the Wifi
 * @return
 */
public static boolean isOpenWifi(){
    Context context = BaseApplication.getInstance().getBaseContext();
    ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo networkInfo = connMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
    return networkInfo.isConnected();
}
 

private boolean d()
{
    ConnectivityManager connectivitymanager = (ConnectivityManager)mContext.getSystemService("connectivity");
    if (connectivitymanager != null)
    {
        NetworkInfo networkinfo = connectivitymanager.getActiveNetworkInfo();
        return networkinfo != null && networkinfo.isAvailable();
    } else
    {
        return false;
    }
}
 

public static String getAPNName(Context context) {
    if (context == null) {
        return null;
    }
    ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService("connectivity");
    if (connectivityManager == null) {
        return null;
    }
    NetworkInfo networkInfo = connectivityManager.getNetworkInfo(0);
    if (networkInfo == null) {
        return null;
    }
    return networkInfo.getExtraInfo();
}
 

/**
 * require: <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 * @param context
 * @return
 */
public static boolean isNetworkAvailable(Context context) {
    try {
        ConnectivityManager connectivityManager
                = (ConnectivityManager) context.getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
        return activeNetworkInfo != null && activeNetworkInfo.isConnected();
    } catch (Exception e) {
        return false;
    }
}
 

public static boolean isAllowedToDownloadMetadata(final Context context) {
    switch (PreferenceUtil.getInstance(context).autoDownloadImagesPolicy()) {
        case "always":
            return true;
        case "only_wifi":
            final ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo netInfo = connectivityManager.getActiveNetworkInfo();
            return netInfo != null && netInfo.getType() == ConnectivityManager.TYPE_WIFI && netInfo.isConnectedOrConnecting();
        case "never":
        default:
            return false;
    }
}
 

public boolean isConnected(){
    ConnectivityManager connMgr = (ConnectivityManager) getSystemService(this.CONNECTIVITY_SERVICE);
    NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
    if (networkInfo != null && networkInfo.isConnected())
        return true;
    else
        return false;
}
 

private static @C.NetworkType int getMobileNetworkType(NetworkInfo networkInfo) {
  switch (networkInfo.getSubtype()) {
    case TelephonyManager.NETWORK_TYPE_EDGE:
    case TelephonyManager.NETWORK_TYPE_GPRS:
      return C.NETWORK_TYPE_2G;
    case TelephonyManager.NETWORK_TYPE_1xRTT:
    case TelephonyManager.NETWORK_TYPE_CDMA:
    case TelephonyManager.NETWORK_TYPE_EVDO_0:
    case TelephonyManager.NETWORK_TYPE_EVDO_A:
    case TelephonyManager.NETWORK_TYPE_EVDO_B:
    case TelephonyManager.NETWORK_TYPE_HSDPA:
    case TelephonyManager.NETWORK_TYPE_HSPA:
    case TelephonyManager.NETWORK_TYPE_HSUPA:
    case TelephonyManager.NETWORK_TYPE_IDEN:
    case TelephonyManager.NETWORK_TYPE_UMTS:
    case TelephonyManager.NETWORK_TYPE_EHRPD:
    case TelephonyManager.NETWORK_TYPE_HSPAP:
    case TelephonyManager.NETWORK_TYPE_TD_SCDMA:
      return C.NETWORK_TYPE_3G;
    case TelephonyManager.NETWORK_TYPE_LTE:
      return C.NETWORK_TYPE_4G;
    case TelephonyManager.NETWORK_TYPE_IWLAN:
      return C.NETWORK_TYPE_WIFI;
    case TelephonyManager.NETWORK_TYPE_GSM:
    case TelephonyManager.NETWORK_TYPE_UNKNOWN:
    default: // Future mobile network types.
      return C.NETWORK_TYPE_CELLULAR_UNKNOWN;
  }
}
 

public  boolean hasNetwork() {
    if(context==null){
        return  false;
    }
    android.net.ConnectivityManager cManager = (android.net.ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    android.net.NetworkInfo info = cManager.getActiveNetworkInfo();
    if (info != null && info.isAvailable()) {
        return true;
    } else {
        return false;
    }
}
 

public boolean isConnectedAsPreferred() {
    try {
        if (isWifiOnly()) {
            ConnectivityManager connectivityManager = (ConnectivityManager)
                    mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
            return activeNetworkInfo.getType() == ConnectivityManager.TYPE_WIFI &&
                    activeNetworkInfo.isConnected();
        }
        return true;
    } catch (Exception e) {
        return false;
    }
}
 

@Override
public void onReceive(Context context, Intent intent) {
    if (intent != null && intent.getAction().equals("android.net.conn.CONNECTIVITY_CHANGE")) {
        ConnectivityManager manager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeInfo = manager.getActiveNetworkInfo();
        if (null == activeInfo) {
            mNoConnect.setVisibility(View.VISIBLE);
            mSearchView.setVisibility(View.GONE);
        } else {
            mNoConnect.setVisibility(View.GONE);
            mSearchView.setVisibility(View.VISIBLE);
        }
    }
}
 

/**
 * checks if Ethernet is connected
 *
 * @return false if Ethernet is not connected
 */
public static boolean isEthernetConnected() {
    ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();

    boolean isWificonnected = (networkInfo != null &&
            ConnectivityManager.TYPE_ETHERNET == networkInfo.getType() && networkInfo.isConnectedOrConnecting());
    Log.d("isEthernetConnected: " + isWificonnected);
    return isWificonnected;
}
 

private static boolean isActiveNetworkMetered(
    ConnectivityManager connectivityManager, NetworkInfo networkInfo) {
  if (Util.SDK_INT >= 16) {
    return connectivityManager.isActiveNetworkMetered();
  }
  int type = networkInfo.getType();
  return type != ConnectivityManager.TYPE_WIFI
      && type != ConnectivityManager.TYPE_BLUETOOTH
      && type != ConnectivityManager.TYPE_ETHERNET;
}
 

public String getCurrentConnectionType() {
    try {
        NetworkInfo networkInfo = mConnectivityManager.getActiveNetworkInfo();
        if (networkInfo == null || !networkInfo.isConnected()) {
            return CONNECTION_TYPE_NONE;
        } else if (ConnectivityManager.isNetworkTypeValid(networkInfo.getType())) {
            return networkInfo.getTypeName().toUpperCase();
        } else {
            return CONNECTION_TYPE_UNKNOWN;
        }
    } catch (SecurityException e) {
        mNoNetworkPermission = true;
        return CONNECTION_TYPE_UNKNOWN;
    }
}
 

public static boolean isOnline(Context context) {
    int res = context.checkCallingOrSelfPermission(Manifest.permission.ACCESS_NETWORK_STATE);
    if (res == PackageManager.PERMISSION_GRANTED) {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo netInfo = cm.getActiveNetworkInfo();
        if (netInfo != null && netInfo.isConnectedOrConnecting()) {
            return true;
        }
        return false;
    }

    return true;
}
 

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;
}
 

/**
 * make true current connect service is wifi
 */
public static boolean isWifi() {
    ConnectivityManager connectivityManager = (ConnectivityManager) UIUtil.getContext()
            .getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();
    if (activeNetInfo != null
            && activeNetInfo.getType() == ConnectivityManager.TYPE_WIFI) {
        return true;
    }
    return false;
}
 

/**
* Simple network connection check.
*
* @param context
*/
private void checkConnection(Context context) 
{
    final ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    final NetworkInfo networkInfo = cm.getActiveNetworkInfo();
    if (networkInfo == null || !networkInfo.isConnectedOrConnecting()) 
    {
        //Toast.makeText(context, R.string.no_network_connection_toast, Toast.LENGTH_LONG).show();
        //Log.e(TAG, "checkConnection - no connection found");
    }
}
 

public boolean isConnected(){
    ConnectivityManager connMgr = (ConnectivityManager) getSystemService(this.CONNECTIVITY_SERVICE);
    NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
    if (networkInfo != null && networkInfo.isConnected())
        return true;
    else
        return false;
}
 

public boolean isConnected() {
    ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo netInfo = cm.getActiveNetworkInfo();
    if (netInfo != null && netInfo.isConnectedOrConnecting()) {
        return true;
    }
    return false;
}