I am creating an application to check the status of the mobile network.
I use NetworkInfo.State.CONNECTED to check the connectivity. It works fine on my emulator.
But when the user makes a call the Network info state is SUSPENDED(But the user is connected to the network) What does the suspended code indicate?
Also when I run the application on a device, the network state is given as DISCONNECTED. But the user is connected to the network and can recevice/give calls. The NetworkInfo.getReason() is given as datadisconnected in this case.
Can someone please help met o check the mobile connectivity to the network.
Thanks in advance.
public class NetWorkCheck{
ConnectivityManager connectivityManager;
NetworkInfo wifiInfo, mobileInfo, lanInfo;
public Boolean checkNow(Context con){
try{
connectivityManager = (ConnectivityManager) con.getSystemService(Context.CONNECTIVITY_SERVICE);
wifiInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
mobileInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
if(wifiInfo.isConnected() || mobileInfo.isConnected())
{
return true;
}
}
catch(Exception e){
System.out.println("CheckConnectivity Exception: " + e.getMessage());
}
return false;
}
}
Related
hello am developing a hotel app and I want my app to work only within the hotel.
To do this I am checking if the user is currently connected to the hotel's specific wifi before initiating the home activity.
By now I am able to check if the connection is wifi and its cool the only part am missing is how to check if the connected wifi is the one provided by the hotel.
Any idea here please?
most questions that am finding about this have not yet been answered and some answeres date back to 2013 which may not be very appropriate for me.
try this.
private void checkWifiConnection() {
ConnectivityManager connMgr = (ConnectivityManager) c.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netwifi = connMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
if (netwifi.getState() == NetworkInfo.State.CONNECTED) {
WifiInfo info = wifi.getConnectionInfo();
String ssid = info.getSSID();
if (ssid.equals("your SSID here")) {
Toast.makeText(this, "Connected to :" + ssid, Toast.LENGTH_SHORT).show();
} else {
//If not then do nothing.
}
}
}
I have a code to determine if there is a network connection or not :
ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
if (netInfo != null && netInfo.isConnected())
{
// There is an internet connection
}
But if there is a network connection and no internet this is useless. I have to ping a website and wait for a response or timeout to determine the internet connection:
URL sourceUrl;
try {
sourceUrl = new URL("http://www.google.com");
URLConnection Connection = sourceUrl.openConnection();
Connection.setConnectTimeout(500);
Connection.connect();
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
// no Internet
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
// no Internet
}
But it is a slow detection. I should learn a good and fast way to detect it.
Thanks in advance.
Try following method to detect different type of connection:
private boolean haveNetworkConnection(Context context)
{
boolean haveConnectedWifi = false;
boolean haveConnectedMobile = false;
ConnectivityManager cm = (ConnectivityManager) Your_Activity_Name.this.getSystemService(Context.CONNECTIVITY_SERVICE);
// or if function is out side of your Activity then you need context of your Activity
// and code will be as following
// (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo[] netInfo = cm.getAllNetworkInfo();
for (NetworkInfo ni : netInfo)
{
if (ni.getTypeName().equalsIgnoreCase("WIFI"))
{
if (ni.isConnected())
{
haveConnectedWifi = true;
System.out.println("WIFI CONNECTION AVAILABLE");
} else
{
System.out.println("WIFI CONNECTION NOT AVAILABLE");
}
}
if (ni.getTypeName().equalsIgnoreCase("MOBILE"))
{
if (ni.isConnected())
{
haveConnectedMobile = true;
System.out.println("MOBILE INTERNET CONNECTION AVAILABLE");
} else
{
System.out.println("MOBILE INTERNET CONNECTION NOT AVAILABLE");
}
}
}
return haveConnectedWifi || haveConnectedMobile;
}
The problem with all such schemes is that 'the internet' does not exist as an entity. There is a reason why failed connection attempts are reported as 'unreachable' or 'cannot connect to server at blahblah'. Examples:
1) You have no signal. Are you connected to the internet? Will PING succeed? Can you connect to your target server?
2) You have a signal, but your provider data allowance has been exceeded. Are you connected to the internet? Will PING succeed? Can you connect to your target server?
3) Your provider connection is fine, but their backbone router is down. Are you connected to the internet? Will PING succeed? Can you connect to your target server?
4) Your provider connection is fine, their backbone router is up but the fibre connection to country X where the server is has been interrupted by some drunken Captain and his ship's anchor. Are you connected to the internet? Will PING succeed? Can you connect to your target server?
5) All the links to the target country are up but Fred, with his ditch-digging JCB, has cut the power cable to the server farm. One of Fred's other jobs is to service the backup generator:( Are you connected to the internet? Will PING succeed? Can you connect to your target server?
6) All the hardware is up, but the server code was written by Fred before he was demoted to ditch-digger for incompetence and has now crashed, again. Are you connected to the internet? Will PING succeed? Can you connect to your target server?
7) Fred has had a day off, but his replacement, competent server admin has blocked off ICMP ping in the routers to prevent ping DOS attacks. Are you connected to the internet? Will PING succeed? Can you connect to your target server?
So, the ony way to be sure is to attempt to connect to the target server and see what happens.
You can surely detect some negative cases more quickly - surely if there is no signal, you cannot get a connection:) Past that, you should just try to connect. Tell the user what is going on, use a timeout and supply the user with a 'Cancel' button. That's about the best you can do.
How about this?
Make sure you have an active WiFi connection, now Use WifiManager.getConnectionInfo() which returns dynamic information about the current Wi-Fi connection, WifiInfo , you can get WifiInfo.getLinkSpeed(), which gives you the current link speed and check that against some minimum value.
I would like to know if the mobile network is enabled or disabled.
My application is designed to help the user when he receives a phone call, and to do this I need Internet access. Thus, I would like to display an information box when the user access the application for the first time if Wi-Fi has a sleep policy and Mobile network is disabled. (I need Internet within milliseconds after the phone start ringing).
I found Settings.System.WIFI_SLEEP_POLICY, but I can't find any information on how to check if mobile network is disabled (when Wi-Fi is on and working).
Any help would be appreciated!
Edit:
The problem is that I want to know if mobile network is turned of by the user (while the phone could have WiFi access at the time).
I finally found a solution. Apparently not all phones have this option:
Home > Menu > Settings > Wireless & networks > Mobile network (checkbox)
However, for those who do, this method will work:
/**
* #return null if unconfirmed
*/
public Boolean isMobileDataEnabled(){
Object connectivityService = getSystemService(CONNECTIVITY_SERVICE);
ConnectivityManager cm = (ConnectivityManager) connectivityService;
try {
Class<?> c = Class.forName(cm.getClass().getName());
Method m = c.getDeclaredMethod("getMobileDataEnabled");
m.setAccessible(true);
return (Boolean)m.invoke(cm);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
apparently there is an alternative, more clean solution then the Reflection approach:
final ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
final NetworkInfo networkInfo = cm.getActiveNetworkInfo();
int type = networkInfo.getType();
String typeName = networkInfo.getTypeName();
boolean connected = networkInfo.isConnected()
networkInfo.getType() will return '0' when connected to mobile network
or '1' when connected trough WIFI. networkInfo.getTypeName() will return
the strings "mobile" or "WIFI". and networkInfo.isConnected() will tell you whether or not you have an active connection.
UPDATE FOR ANDROID 5.0+ (API 21+)
Calling getMobileDataEnabled via the reflection leads to NoSuchMethodException on Android 5.0+ on some devices. So in addition to accepted answer you may wanna do second check if NoSuchMethodException is thrown.
...
catch(NoSuchMethodException e)
{
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
{
isDataEnabled = Settings.Global.getInt(context.getContentResolver(), "mobile_data", 0) == 1;
}
}
you can use below code this is working for all API versions:
ConnectivityManager cm =
(ConnectivityManager)mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
boolean isConnected = activeNetwork != null &&
activeNetwork.isConnectedOrConnecting();
if(isConnected)
{
if(activeNetwork.getType()==ConnectivityManager.TYPE_MOBILE)
return true;
else
return false;
}
else
return false;
PackageManager pm = context.getPackageManager();
boolean hasTelephony = pm.hasSystemFeature(PackageManager.FEATURE_TELEPHONY);
I am trying to pull as well as push some data to and from the server via webservice. The mandatory thing that should i have to do is connectivity check. What i have done right now is , i have written a connectivity check code in each activity before it pushes/ pulls the result set from the server. I know its not a best way that i should have to code. Instead this connectivity check should be running some thing like a background , (behind the screens) and alerts the user, when the WIFI / 3G becomes low / goes down.
What is the best way to do so ?
Please let me know know your thoughts.
Thank you.
You can register a BroadcastReceiver to listen for connectivity changes. A detailed post can be found here.
Hi i do these way maybe there better
private boolean checkInternetConnection() {
ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
// test for connection
if (cm.getActiveNetworkInfo() != null
&& cm.getActiveNetworkInfo().isAvailable()
&& cm.getActiveNetworkInfo().isConnected()) {
return true;
} else {
//no conection
return false;
}
}
public static boolean isInternetAvailable(Context context){
ConnectivityManager connec = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
android.net.NetworkInfo wifi = connec.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
android.net.NetworkInfo mobile = connec.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
if(wifi.isConnected() || mobile.isConnected()){
// Check for web site
try{
// Create a URL for the desired page
URL url = new URL("http://www.google.com");
// Read all the text returned by the server
BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
in.close();
return true;
} catch (Exception e) {
return false;
}
}
return false;
}
The method also checks whether a certain website in this case the www.google.com is available. This might be useful as the device might be connected to a WLAN router which has no internet access. In this case wifi.isConnected() would also return true although no internet is available.
for check internet connection in android..
public static boolean isOnline(Activity act)
{
ConnectivityManager cm = (ConnectivityManager)act.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
if (netInfo != null && netInfo.isConnectedOrConnecting())
{
return true;
}
return false;
}
i want know the current internet connection on device??
in android i found the two property to know network type like..
ConnectivityManager.TYPE_WIFI
ConnectivityManager.TYPE_MOBILE
but how to know 3G network??
pls help me out
Thanks in Advance!
now i can know 3 type of network as follow..........
ConnectivityManager connec = (ConnectivityManager) activity.getSystemService(Context.CONNECTIVITY_SERVICE);
android.net.NetworkInfo wifi = connec.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
android.net.NetworkInfo mobile = connec.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
NetworkInfo info = connec.getActiveNetworkInfo();
int netSubType = info.getSubtype();e
if (wifi.isConnected())
{
wifi is connected
}
else if (mobile.isConnected())
{
if(netSubType == TelephonyManager.NETWORK_TYPE_UMTS)
{
3G is connected
}
else
{
GPRS is connected
}
}
try to get subType() with this snippet:
NetworkInfo info = mConnectivity.getActiveNetworkInfo();
int netSubType = info.getSubtype();
then if netSubType is TelephonyManager.NETWORK_TYPE_UMTS, then its a 3G network
Updated: What's 'info' here
As far as I have used 3G is coming under ConnectivityManager.TYPE_MOBILE only.
If you are using emulator then you can press F8 to connect and disconnect 3G.
It also disconnects GPRS. for both ConnectivityManager.TYPE_MOBILE is used.