I have read that the "ConnectivityManager" class gives information about the network. But I am confused on how to implement the code. I need an efficient way to check internet, wifi and GPRS at a time.
Thanks
And again: http://developer.android.com/reference/android/net/ConnectivityManager.html#CONNECTIVITY_ACTION
You have to do something, nobody will write complete code for you. Read the documentation and you know when the event is fired and which you have to sort out.
Simply use this function. call this function where you want to check that internet is available or not.
public boolean isNetworkConnected(Context mContext) {
final String DEBUG_TAG = "NetworkStatusExample";
ConnectivityManager connMgr = (ConnectivityManager) mContext.getSystemService(CONNECTIVITY_SERVICE);
boolean isWifiConn=false;
boolean isMobileConn=false;
Network nn=connMgr.getActiveNetwork();
Network[] networkinf=connMgr.getAllNetworks();
for (int a=0;a<networkinf.length;a++) {
NetworkCapabilities networkCapabilities = connMgr.getNetworkCapabilities(networkinf[a]);
if (networkCapabilities.hasTransport(networkCapabilities.TRANSPORT_CELLULAR)){
isMobileConn=true;
}
else if (networkCapabilities.hasTransport(networkCapabilities.TRANSPORT_WIFI)){
isWifiConn=true;
}
}
Log.i(DEBUG_TAG, "Wifi connected: " + isWifiConn);
Log.i(DEBUG_TAG, "Mobile connected: " + isMobileConn);
editor.putBoolean("isConnected",isMobileConn);
editor.apply();
if (isMobileConn || isWifiConn){
Log.i(DEBUG_TAG, "Network Status..." + isMobileConn);
return true;
}
else {
return false;
}
}
Related
One of the things android 10 is changing is that we cannot get READ_PHONE_STATE automatically,
And have to direct the user to manually give the permission by going to app info > permissions > phone > turn on.
is there any way to get network state (if the phone is on wifi / 3g, etc) on android 10 and above
Without directing the user to go to the application settings by himself and change the permission manually?
I was thinking to bypass the permission asking with
ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkCapabilities caps = cm.getNetworkCapabilities(cm.getActivityNetwork());
boolean isMobile = caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR);
boolean isWifi = caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI);
would that be ok and then not needed to use the READ_PHONE_STATE permission ?
There is a class NetworkInfo it have a function
getTypeName() that return string value contain MOBILE or WIFI
I try to write function I hope it will be helpful for you :
/**
* #param mType : type of network connection "MOBILE" or "WIFI"
* #return : true of false
*/
public boolean isMyType(String mType) {
ConnectivityManager connectivityManager = (ConnectivityManager)
getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
//
if (activeNetworkInfo != null && activeNetworkInfo.isConnected()) {
return activeNetworkInfo.getTypeName().equals(mType);
} else {
// no internet connection
return false;
}
}
than you can call it :
boolean isMobile = isMyType("MOBILE");
boolean isWifi = isMyType("WIFI");
// for logcat debug
Log.i("typeNetwork", "is mobile :" + isMobile);
Log.i("typeNetwork", "is wifi :" + isWifi);
let me know if this works for you..
I have been working on an android application.For one of the feature, I need the active network information(i.e. whether it's connected with Wi-Fi or mobile data). I got this piece of code from the internet.
NetworkInfo activeNetworkInfo = context.getSystemService(ConnectivityManager.class).getActiveNetworkInfo();
But this API is deprecated and I don't want to use any deprecated API.
After some more googling, I found that we should use ConnectivityManager.NetworkCallback instead. But I am not able to get an example of it. How can I use this?. Please help me if anyone having an idea about using ConnectivityManager.NetworkCallback
Check out this function in Kotlin
fun networkConnection(): Boolean {
var networkAvailable = false
val connectivityManager: ConnectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
val network: Network = connectivityManager.activeNetwork!!
val networkCapabilities: NetworkCapabilities = connectivityManager.getNetworkCapabilities(network)!!
if (networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)) {
networkAvailable = true
} else if (networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI)) {
networkAvailable = true
} else if (networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_VPN)) {
networkAvailable = true
}
return networkAvailable
}
try the following code:
private void registerNetworkCallback(Context context) {
final ConnectivityManager manager =
(ConnectivityManager) context.getSystemService(CONNECTIVITY_SERVICE);
manager.registerNetworkCallback(
new NetworkRequest.Builder()
.addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
.addTransportType(NetworkCapabilities.TRANSPORT_ETHERNET)
.build(),
new NetworkCallback() {
#Override
public void onAvailable(Network network) {
/** here to get the available info
this ternary operation is not quite true, because non-metered
doesn't yet mean, that it's wifi
nevertheless, for simplicity let's assume that's true
*/
Log.i("vvv", "connected to " + (manager.isActiveNetworkMetered() ? "LTE" : "WIFI"));
}
#Override
public void onCapabilitiesChanged(Network network,
NetworkCapabilities networkCapabilities){
/**here to get the change network info
Value is TRANSPORT_CELLULAR, TRANSPORT_WIFI,
TRANSPORT_BLUETOOTH, TRANSPORT_ETHERNET, TRANSPORT_VPN
*/
if(networkCapabilities.hasTransport("type")){
}
}
});
}
connectivityManager = (ConnectivityManager)
context.getSystemService(ConnectivityManager.class);
#RequiresApi(api = Build.VERSION_CODES.M)
private void getActiveNet() {
Network currentNetwork = connectivityManager.getActiveNetwork();
}
Note that "active network" is synonymous in android with "default network".
ConnectivityManager#getActiveNetworkInfo()
Returns details about the currently active default data network...
ConnectivityManager#registerDefaultNetworkCallback(NetworkCallback)
Registers to receive notifications about changes in the application's
default network...
Therefore using ConnectivityManager#registerDefaultNetworkCallback(NetworkCallback) you can listen for default (aka "active") network changes. Unfortunately, this only returns the Network object which does not have information regarding transport (Wi-Fi vs Cellular) in which case you'll need to make an additional call to ConnectivityManager#getNetworkCapabilities(Network) to get that info.
Here is an example:
final ConnectivityManager connectivityManager = (ConnectivityManager)
context.getSystemService(Context.CONNECTIVITY_SERVICE);
final NetworkCallback networkCallback = new NetworkCallback() {
#Override
void onAvailable(Network network) {
// Triggers when a default network is available.
NetworkCapabilities nc = connectivityManager.getNetworkCapabilities(network);
boolean isWifi = nc.hasTransport(NetworkCapabilities.TRANSPORT_WIFI);
boolean isCellular = nc.hasTransport(NetworkCapabilities. TRANSPORT_CELLULAR);
}
};
connectivityManager.registerDefaultNetworkCallback(networkCallback);
This question might be a duplicate question, but i cant find proper solution.
I have chat app in which i set function for when remote android device on background mode it will get notification by FCM when new message will come(new node added in chatroom).
So
if remote device is in the foreground mode than it will get notification by app and its has definitely internet connectivity for this i can set message delivery successfully.
if remote device is in the background mode than it will get notification by FCM and its has definitely internet connectivity. for this i can also set message delivery successfully.
So how do i check that remote device is totally offline(no internet connection) or how to check FCM is not success to send notification ?
for example:
if(messegeReceiver(remote device) has no internet connectivity )
{
//here i want to change data in firebase//
}
else
{
//here i want to change data in firebase//
}
I have "Users" node in which every users set device_token while login the app.
You can device checking offline/online mode via set one param in your chat table. When user exit or minimize application then set states to 0 and maximum set to 1.Best way if possible you use firebase real-time database for online offline.
IntentFilter filter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);
NetworkChangeReceiver receiver = new NetworkChangeReceiver();
regisenter code hereterReceiver(receiver, filter);
public static class NetworkChangeReceiver extends BroadcastReceiver {
public static boolean isOnline(Context context) {
ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
//should check null because in air plan mode it will be null
return (netInfo != null && netInfo.isConnected());
}
public static boolean isNetworkAvailable(Context context) {
ConnectivityManager connectivity = (ConnectivityManager)
context.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity != null) {
NetworkInfo[] info = connectivity.getAllNetworkInfo();
if (info != null) {
for (int i = 0; i < info.length; i++) {
if (info[i].getState() == NetworkInfo.State.CONNECTED) {
if (!isConnected) {
relativelayout_connection.setVisibility(View.GONE);
isConnected = true;
return true;
}
} else {
relativelayout_connection.setVisibility(View.VISIBLE);
}
}
}
} else {
relativelayout_connection.setVisibility(View.GONE);
isConnected = false;
return false;
}
return isConnected;
}
#Override
public void onReceive(final Context context, final Intent intent) {
// isNetworkAvailable(context);
if (isOnline(context)) {
} else {
relativelayout_connection.setVisibility(View.VISIBLE);
}
}
}
FCM does not guarantee that the push notification gets delivered. It completely depends upon various factors like internet connection (as you mentioned), OEM behavior, Doze mode etc.
In your case, you are trying to send messages via FCM from one device to another and shown messages in the form notifications just like any other chat application.
The only problem here is that the FCM does not provide you with delivery parameters in response (image attached) that you are looking for. It only gives count for number of notifications that has been accepted by the gateway i.e. FCM (success) and the count for number of notifications that has been rejected by the gateway (failure). It also gives the reason for rejection (error) message like NotRegistered, MissingRegistrationToken, etc and you can refer this for the same.
My suggestion here would be to have a handshake message in place that acknowledges the delivery of the push notification from the other device. As soon as you receive the push notification send a handshake message via FCM and that gets received by the first device which understands that the push notification has been delivered. In case if the device does not receive the handshake you assume that the message is yet to be delivered.
I hope this really helps you and please up vote the answer or accept the answer if you feel like doing so.
I am using Volley for webcalls in my application and everything is working fine and smooth except one state in which somehow my device is not getting Network Connection but checking connection via code is returning true using below code.
public static boolean isNetworkAvailable() {
ConnectivityManager connectivityManager = SessionApplication.getConnectivityManager();
if(connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState() == NetworkInfo.State.CONNECTED ||
connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState() == NetworkInfo.State.CONNECTED) {
//we are connected to a network
return true;
}
else
return false;
}
Instead of returning network state false using above code My volley web calls returning me this exception "handle com.android.volley.NoConnectionError: java.net.UnknownHostException".
I checked my internet connection by opening browser in my device and found it is also not working. So i am okay with application behavior but still i need to handle such condition because this is not user friendly user should be prompted a dialog that "Check Your Internet Connection!".
This should be a common issues in Android could any body please help me to give me best approach to handle such cases. Thanks in advance.
Network state is :
This exception indicates the problem in connectivity. In fact you can show some dialog about the connectivity. Overriding the onErrorResponse(VolleyError error) you can do like this -
public void onErrorResponse(VolleyError error) {
Log.d(TAG, error.toString());
if (error instanceof NoConnectionError)
new AlertDialog.Builder(this).setMessage(
"Unable to connect to the server! Please ensure your internet is working!").show();
}
Try this method might help
public boolean isConnectedToInternet(){
connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivityManager != null){
NetworkInfo[] info = connectivityManager.getAllNetworkInfo();
if (info != null){
for (int i = 0; i < info.length; i++){
if (info[i].getState() == NetworkInfo.State.CONNECTED){
return true;
}
}
}
}
return false;
}
I am having an issue when try to connect to wireless network.
My code works ok I sucessfully connect to the network whit the problems described below.
I have a listview whit the wifi scan results.
When I click the first time my receiver is not getting the "completed" state.
After clicking the second time , and , without chosing any network it get connected and my code inside the "complete" is executed.
The code below is called from another class that thre reason why it is static
Coonect Code:
public static boolean connect(String ssid,String password)
{
String networkSSID = ssid;
String networkPass = password;
WifiConfiguration conf = new WifiConfiguration();
conf.SSID = "\"" + networkSSID + "\"";
conf.preSharedKey = "\""+ networkPass +"\"";
//WifiManager wifiManager = (WifiManager)context.getSystemService(Context.WIFI_SERVICE);
int netid=mainWifi.addNetwork(conf);
mainWifi.disconnect();
mainWifi.enableNetwork(netid, true);
//mainWifi.reconnect(); <-- exact the same issue discommenting this line
return true;
}
On the class were the connect is been called I have registered BradcastReceiver as follow:
public void onClick(View v)
{
mainWifi = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
wifiinfo = mainWifi.getConnectionInfo();
AuthWifi authWifi = new AuthWifi();
IntentFilter mIntentFilter = new IntentFilter();
mIntentFilter.addAction(WifiManager.SUPPLICANT_STATE_CHANGED_ACTION);
getApplicationContext().registerReceiver(authWifi, mIntentFilter);
ClientManager.scan(CameraActivity.this, mainWifi);
}
my broadcast receiver
public class AuthWifi extends BroadcastReceiver {
#Override
public void onReceive(Context c, Intent intent) {
String action = intent.getAction();
if (action.equals(WifiManager.SUPPLICANT_STATE_CHANGED_ACTION)) {
SupplicantState supl_state = ((SupplicantState) intent.getParcelableExtra(WifiManager.EXTRA_NEW_STATE));
switch (supl_state) {
case COMPLETED:
/////////////IF I AM CONNECTED THE WIFI SSID I CHOSE FROM A LISTVIEW THEN ---->
if(wifiinfo != null & wifiinfo.getSSID()!=null & ClientManager.getSSID() !=null& !conectado ) {
if (wifiinfo.getSSID().contains(ClientManager.getSSID().trim())) ///I know here is better .equals() /// I have contain for my own reasons
conectado = true;
/*HERE I DO SOME THINGS WHEN CONNECTED (I CALL A RUNNABLE TO MAKE A SERVER SOCKET)*/
}
}
break;
case DISCONNECTED:
Log.i("SupplicantState", "Disconnected");
conectado = false;
if (ClientStartReceive.isStopped)
{
ClientStartReceive.stop();
}
break;
default:
Log.i("SupplicantState", "Unknown");
break;
}
int supl_error = intent.getIntExtra(WifiManager.EXTRA_SUPPLICANT_ERROR, -1);
if (supl_error == WifiManager.ERROR_AUTHENTICATING) {
/////HERE I MANAGE AUTHENTICATION ERROR
}
}
}
}
Hope someone is able to help :( if you need more code to troubleshoot please let me know.
If you have some reference to help me even if i need to rebuild the code is accepted also.. My goal is be able to connect to a network ,show for authentication errors and execute some code on connection susscess.
Sorry for my english I think you have gessed I am not native.
Regards
As doc indicate that “COMPLETED“ use as follow：
This state indicates that the supplicant has completed its processing for the association phase and that data connection is fully configured. Note, however, that there may not be any IP address associated with the connection yet.
You should not rely this state to ensure your connection is completed. Instead, you can register an BroadcastReceiver listener for network status change.