Connectivity.java

/*
 * Copyright (C) 2014 IUH �yber$oft Team
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package vn.cybersoft.obs.android.utilities;

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

/**
* Check device's network connectivity and speed
* @author emil http://stackoverflow.com/users/220710/emil
*
*/
public class Connectivity {
	/**
	 * Get the network info
	 * 
	 * @param context
	 * @return
	 */
	public static NetworkInfo getNetworkInfo(Context context) {
		ConnectivityManager cm = (ConnectivityManager) context
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		return cm.getActiveNetworkInfo();
	}

	/**
	 * Check if there is any connectivity
	 * 
	 * @param context
	 * @return
	 */
	public static boolean isConnected(Context context) {
		NetworkInfo info = Connectivity.getNetworkInfo(context);
		return (info != null && info.isConnected());
	}

	/**
	 * Check if there is any connectivity to a Wifi network
	 * 
	 * @param context
	 * @param type
	 * @return
	 */
	public static boolean isConnectedWifi(Context context) {
		NetworkInfo info = Connectivity.getNetworkInfo(context);
		return (info != null && info.isConnected() && info.getType() == ConnectivityManager.TYPE_WIFI);
	}
	
	/**
	 * Check if there is any connectivity to a mobile network
	 * 
	 * @param context
	 * @param type
	 * @return
	 */
	public static boolean isConnectedMobile(Context context) {
		NetworkInfo info = Connectivity.getNetworkInfo(context);
		return (info != null && info.isConnected() && info.getType() == ConnectivityManager.TYPE_MOBILE);
	}

	/**
	 * Check if there is fast connectivity
	 * 
	 * @param context
	 * @return
	 */
	public static boolean isConnectedFast(Context context) {
		NetworkInfo info = Connectivity.getNetworkInfo(context);
		return (info != null && info.isConnected() && Connectivity
				.isConnectionFast(info.getType(), info.getSubtype()));
	}

	/**
	 * Check if the connection is fast
	 * 
	 * @param type
	 * @param subType
	 * @return
	 */
	public static boolean isConnectionFast(int type, int subType) {
		if (type == ConnectivityManager.TYPE_WIFI) {
			return true;
		} else if (type == ConnectivityManager.TYPE_MOBILE) {
			switch (subType) {
			case TelephonyManager.NETWORK_TYPE_1xRTT:
				return false; // ~ 50-100 kbps
			case TelephonyManager.NETWORK_TYPE_CDMA:
				return false; // ~ 14-64 kbps
			case TelephonyManager.NETWORK_TYPE_EDGE:
				return false; // ~ 50-100 kbps
			case TelephonyManager.NETWORK_TYPE_EVDO_0:
				return true; // ~ 400-1000 kbps
			case TelephonyManager.NETWORK_TYPE_EVDO_A:
				return true; // ~ 600-1400 kbps
			case TelephonyManager.NETWORK_TYPE_GPRS:
				return false; // ~ 100 kbps
			case TelephonyManager.NETWORK_TYPE_HSDPA:
				return true; // ~ 2-14 Mbps
			case TelephonyManager.NETWORK_TYPE_HSPA:
				return true; // ~ 700-1700 kbps
			case TelephonyManager.NETWORK_TYPE_HSUPA:
				return true; // ~ 1-23 Mbps
			case TelephonyManager.NETWORK_TYPE_UMTS:
				return true; // ~ 400-7000 kbps
				/*
				 * Above API level 7, make sure to set android:targetSdkVersion
				 * to appropriate level to use these
				 */
			case TelephonyManager.NETWORK_TYPE_EHRPD: // API level 11
				return true; // ~ 1-2 Mbps
			case TelephonyManager.NETWORK_TYPE_EVDO_B: // API level 9
				return true; // ~ 5 Mbps
			case TelephonyManager.NETWORK_TYPE_HSPAP: // API level 13
				return true; // ~ 10-20 Mbps
			case TelephonyManager.NETWORK_TYPE_IDEN: // API level 8
				return false; // ~25 kbps
			case TelephonyManager.NETWORK_TYPE_LTE: // API level 11
				return true; // ~ 10+ Mbps
				// Unknown
			case TelephonyManager.NETWORK_TYPE_UNKNOWN:
			default:
				return false;
			}
		} else {
			return false;
		}
	}
}