Check Internet Connectivity
If internet connected then method will return true or false.
This method is used to check weather WI-Fi is connected or not.
Check if device has internet connectivity
Add the required network permissions to the application manifest file:
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.INTERNET" />
/**
* If network connectivity is available, will return true
*
* @param context the current context
* @return boolean true if a network connection is available
*/
public static boolean isNetworkAvailable(Context context) {
ConnectivityManager connectivity = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity == null) {
Log.d("NetworkCheck", "isNetworkAvailable: No");
return false;
}
// get network info for all of the data interfaces (e.g. WiFi, 3G, LTE, etc.)
NetworkInfo[] info = connectivity.getAllNetworkInfo();
// make sure that there is at least one interface to test against
if (info != null) {
// iterate through the interfaces
for (int i = 0; i < info.length; i++) {
// check this interface for a connected state
if (info[i].getState() == NetworkInfo.State.CONNECTED) {
Log.d("NetworkCheck", "isNetworkAvailable: Yes");
return true;
}
}
}
return false;
}
How to check network strength in android?
ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo Info = cm.getActiveNetworkInfo();
if (Info == null || !Info.isConnectedOrConnecting()) {
Log.i(TAG, "No connection");
} else {
int netType = Info.getType();
int netSubtype = Info.getSubtype();
if (netType == ConnectivityManager.TYPE_WIFI) {
Log.i(TAG, "Wifi connection");
WifiManager wifiManager = (WifiManager) getApplication().getSystemService(Context.WIFI_SERVICE);
List<ScanResult> scanResult = wifiManager.getScanResults();
for (int i = 0; i < scanResult.size(); i++) {
Log.d("scanResult", "Speed of wifi"+scanResult.get(i).level);//The db level of signal
}
// Need to get wifi strength
} else if (netType == ConnectivityManager.TYPE_MOBILE) {
Log.i(TAG, "GPRS/3G connection");
// Need to get differentiate between 3G/GPRS
}
}
How to check network strength
To check exact strength in decibels use this-
ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo Info = cm.getActiveNetworkInfo();
if (Info == null || !Info.isConnectedOrConnecting()) {
Log.i(TAG, "No connection");
} else {
int netType = Info.getType();
int netSubtype = Info.getSubtype();
if (netType == ConnectivityManager.TYPE_WIFI) {
Log.i(TAG, "Wifi connection");
WifiManager wifiManager = (WifiManager) getApplication().getSystemService(Context.WIFI_SERVICE);
List<ScanResult> scanResult = wifiManager.getScanResults();
for (int i = 0; i < scanResult.size(); i++) {
Log.d("scanResult", "Speed of wifi"+scanResult.get(i).level);//The db level of signal
}
// Need to get wifi strength
} else if (netType == ConnectivityManager.TYPE_MOBILE) {
Log.i(TAG, "GPRS/3G connection");
// Need to get differentiate between 3G/GPRS
}
}
To check Network type use this Class-
public class Connectivity {
/*
* These constants aren't yet available in my API level (7), but I need to
* handle these cases if they come up, on newer versions
*/
public static final int NETWORK_TYPE_EHRPD = 14; // Level 11
public static final int NETWORK_TYPE_EVDO_B = 12; // Level 9
public static final int NETWORK_TYPE_HSPAP = 15; // Level 13
public static final int NETWORK_TYPE_IDEN = 11; // Level 8
public static final int NETWORK_TYPE_LTE = 13; // Level 11
/**
* Check if there is any connectivity
*
* @param context
* @return
*/
public static boolean isConnected(Context context) {
ConnectivityManager cm = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo info = cm.getActiveNetworkInfo();
return (info != null && info.isConnected());
}
/**
* Check if there is fast connectivity
*
* @param context
* @return
*/
public static String isConnectedFast(Context context) {
ConnectivityManager cm = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo info = cm.getActiveNetworkInfo();
if ((info != null && info.isConnected())) {
return Connectivity.isConnectionFast(info.getType(),
info.getSubtype());
} else
return "No NetWork Access";
}
/**
* Check if the connection is fast
*
* @param type
* @param subType
* @return
*/
public static String isConnectionFast(int type, int subType) {
if (type == ConnectivityManager.TYPE_WIFI) {
System.out.println("CONNECTED VIA WIFI");
return "CONNECTED VIA WIFI";
} else if (type == ConnectivityManager.TYPE_MOBILE) {
switch (subType) {
case TelephonyManager.NETWORK_TYPE_1xRTT:
return "NETWORK TYPE 1xRTT"; // ~ 50-100 kbps
case TelephonyManager.NETWORK_TYPE_CDMA:
return "NETWORK TYPE CDMA (3G) Speed: 2 Mbps"; // ~ 14-64 kbps
case TelephonyManager.NETWORK_TYPE_EDGE:
return "NETWORK TYPE EDGE (2.75G) Speed: 100-120 Kbps"; // ~
// 50-100
// kbps
case TelephonyManager.NETWORK_TYPE_EVDO_0:
return "NETWORK TYPE EVDO_0"; // ~ 400-1000 kbps
case TelephonyManager.NETWORK_TYPE_EVDO_A:
return "NETWORK TYPE EVDO_A"; // ~ 600-1400 kbps
case TelephonyManager.NETWORK_TYPE_GPRS:
return "NETWORK TYPE GPRS (2.5G) Speed: 40-50 Kbps"; // ~ 100
// kbps
case TelephonyManager.NETWORK_TYPE_HSDPA:
return "NETWORK TYPE HSDPA (4G) Speed: 2-14 Mbps"; // ~ 2-14
// Mbps
case TelephonyManager.NETWORK_TYPE_HSPA:
return "NETWORK TYPE HSPA (4G) Speed: 0.7-1.7 Mbps"; // ~
// 700-1700
// kbps
case TelephonyManager.NETWORK_TYPE_HSUPA:
return "NETWORK TYPE HSUPA (3G) Speed: 1-23 Mbps"; // ~ 1-23
// Mbps
case TelephonyManager.NETWORK_TYPE_UMTS:
return "NETWORK TYPE UMTS (3G) Speed: 0.4-7 Mbps"; // ~ 400-7000
// kbps
// NOT AVAILABLE YET IN API LEVEL 7
case Connectivity.NETWORK_TYPE_EHRPD:
return "NETWORK TYPE EHRPD"; // ~ 1-2 Mbps
case Connectivity.NETWORK_TYPE_EVDO_B:
return "NETWORK_TYPE_EVDO_B"; // ~ 5 Mbps
case Connectivity.NETWORK_TYPE_HSPAP:
return "NETWORK TYPE HSPA+ (4G) Speed: 10-20 Mbps"; // ~ 10-20
// Mbps
case Connectivity.NETWORK_TYPE_IDEN:
return "NETWORK TYPE IDEN"; // ~25 kbps
case Connectivity.NETWORK_TYPE_LTE:
return "NETWORK TYPE LTE (4G) Speed: 10+ Mbps"; // ~ 10+ Mbps
// Unknown
case TelephonyManager.NETWORK_TYPE_UNKNOWN:
return "NETWORK TYPE UNKNOWN";
default:
return "";
}
} else {
return "";
}
}
}