Android check internet connection [duplicate]

Answer 1

public boolean checkInternetConnection(Context context) {
    ConnectivityManager connectivity = (ConnectivityManager) context
        .getSystemService(Context.CONNECTIVITY_SERVICE);
    if (connectivity == null) {
        return false;
    } else {
        NetworkInfo[] info = connectivity.getAllNetworkInfo();
        if (info != null) {
            for (int i = 0; i < info.length; i++){
                if (info[i].getState()==NetworkInfo.State.CONNECTED){
                    return true;
                }
            }
        }
    }
    return false;
}

Answer 2

Use this code to check the internet connection

ConnectivityManager connectivityManager = (ConnectivityManager) ctx
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        if ((connectivityManager
                .getNetworkInfo(ConnectivityManager.TYPE_MOBILE) != null && connectivityManager
                .getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState() == NetworkInfo.State.CONNECTED)
                || (connectivityManager
                        .getNetworkInfo(ConnectivityManager.TYPE_WIFI) != null && connectivityManager
                        .getNetworkInfo(ConnectivityManager.TYPE_WIFI)
                        .getState() == NetworkInfo.State.CONNECTED)) {
            return true;
        } else {
            return false;
        }

Answer 3

No need to be complex. The simplest and framework manner is to use ACCESS_NETWORK_STATE permission and just make a connected method

public boolean isOnline() {
    ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    return cm.getActiveNetworkInfo() != null && cm.getActiveNetworkInfo().isConnectedOrConnecting();
}

You can also use requestRouteToHost if you have a particualr host and connection type (wifi/mobile) in mind.

You will also need:

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

in your android manifest.

for more detail go here

Answer 4

You can use following snippet to check Internet Connection.

It will useful both way that you can check which Type of NETWORK Connection is available so you can do your process on that way.

You just have to copy following class and paste directly in your package.

/**
 * @author Pratik Butani
 */
public class InternetConnection {

    /**
     * CHECK WHETHER INTERNET CONNECTION IS AVAILABLE OR NOT
     */
    public static boolean checkConnection(Context context) {
        final ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

        if (connMgr != null) {
            NetworkInfo activeNetworkInfo = connMgr.getActiveNetworkInfo();

            if (activeNetworkInfo != null) { // connected to the internet
                // connected to the mobile provider's data plan
                if (activeNetworkInfo.getType() == ConnectivityManager.TYPE_WIFI) {
                    // connected to wifi
                    return true;
                } else return activeNetworkInfo.getType() == ConnectivityManager.TYPE_MOBILE;
            }
        }
        return false;
    }
}

Now you can use like:

if (InternetConnection.checkConnection(context)) {
    // Its Available...
} else {
    // Not Available...
}

DON'T FORGET to TAKE Permission :) :)

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />

You can modify based on your requirement.

Thank you.

Answer 5

in manifest

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

in code,

public static boolean isOnline(Context ctx) {
    if (ctx == null)
        return false;

    ConnectivityManager cm =
            (ConnectivityManager) ctx.getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo netInfo = cm.getActiveNetworkInfo();
    if (netInfo != null && netInfo.isConnectedOrConnecting()) {
        return true;
    }
    return false;
}

Answer 6

After "return" statement, you can't write any code(excluding try-finally block). Move your new activity codes before the "return" statements.