I have an app that connects to webservice but the problem is that when I get 3G, it gives error. When the connection is good, with a wi-fi for example it works perfectly.
I have some algorithms that test the connection, but everyone validates only if it is connected, and sometimes 3G has a network but does not connect to the internet, generating an error in the app.
Can anyone help me check the internet before the app tries to consume the webservice ?This method validates if a connection exists.
public static boolean isOnline(Context context) {
ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
if (netInfo != null && netInfo.isConnected())
return true;
else
return false;
}
During consumption to the web service, you can add a try catch and get the exection UnknownHostException and treat it.
try {
//seu código
} catch(UnknownHostException e) {
// trata o erro de conexão.
}
First, do not forget the permission on Manifest. If not, your application will not be able to connect.
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
Then, create a method in some place of your preference and where it makes sense in your application.
public boolean isOnline() {
ConnectivityManager manager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
return manager.getActiveNetworkInfo() != null &&
manager.getActiveNetworkInfo().isConnectedOrConnecting();
}
A basic "if" returns the status of the connection.
if(isOnline()) {
//faz algo :)
}