How to know change in network connection in android

Question

How to know whether there is any network connection switch or network connection lost in my application.

what protocol you are using? in Socket it will be easy to know that connection is lost, in Http there will be different way — Mohammad Ersan, Sep 08 '11 at 08:16

score 0 · Answer 1 · answered Sep 08 '11 at 08:21

you can use the ConnectivityManager in Android:

ConnectivityManager cm = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo net = cm.getActiveNetworkInfo();
if(net != null && net.isConnected()) {
    // we have connection
}

Edit: Checking for internet connection requires some permissions as well:

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

score 0 · Answer 2 · edited May 23 '17 at 12:10

0

You can refer my post over here for network switch and checking connection: (Note: I have posted answer below question in that post)

How to handle WiFi to Mobile network switch programatically?

You have to add some permissions in AndroidManifest.xml

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

edited May 23 '17 at 12:10

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answered Sep 08 '11 at 08:27

Balaji Khadake

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How to know change in network connection in android

2 Answers2