umesh0492 · January 16, 2016 19:26 · Mar 10, 2013
diff --git a/Connectivity.java b/Connectivity.java
@@ -0,0 +1,122 @@
+package com.emil.android.util;
+
+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;
+		}
+	}
+
+}