ConnectivityManager.CONNECTIVITY_ACTION get network disconected from in API >= 14?

android, connectivity, networking

Solution

You can use the following

ConnectivityManager connectivityManager = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
int networkType = intent.getParcelableExtra(ConnectivityManager.EXTRA_NETWORK_TYPE);
boolean isWiFi = networkType == ConnectivityManager.TYPE_WIFI;
boolean isMobile = networkType == ConnectivityManager.TYPE_MOBILE;
NetworkInfo networkInfo = connectivityManager.getNetworkInfo(networkType);
boolean isConnected = networkInfo.isConnected();

if (isWiFi) {
    if (isConnected) {
        Log.i("APP_TAG", "Wi-Fi - CONNECTED");
    } else {
        Log.i("APP_TAG", "Wi-Fi - DISCONNECTED");
    }
} else if (isMobile) {
    if (isConnected) {
        Log.i("APP_TAG", "Mobile - CONNECTED");
    } else {
        Log.i("APP_TAG", "Mobile - DISCONNECTED");
    }
} else {
    if (isConnected) {
        Log.i("APP_TAG", networkInfo.getTypeName() + " - CONNECTED");
    } else {
        Log.i("APP_TAG", networkInfo.getTypeName() + " - DISCONNECTED");
    }
}

Problem

I need to get the network from which device was disconnected. Now I use: ``` NetworkInfo ni =intent.getParcelableExtra(ConnectivityManager.EXTRA_NETWORK_INFO); ``` And check: ``` ni.isConnected() ``` if this returns false ni - is the network from which the device was disconnected. But `ConnectivityManager.EXTRA_NETWORK_INFO` is deprecated in API 14. Google says use getActiveNetworkInfo() to get network information. But getActiveNetworkInfo() always returns network with which the device is connected now (`isConnected()` must return true)! How do I get the network info for the network the device disconnected from without using ConnectivityManager.EXTRA_NETWORK_INFO? Sertorio Noronha, when I use getActiveNetworkInfo() I only get the network to which I am connected now! But I need to get the network from which I was disconnected. ``` ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo n1 = cm.getActiveNetworkInfo(); Log.d("tets", String.format("%s: %s", n1.getTypeName(), n1.isConnected())); ``` When I disconnect from WI-FI and connect to 3G in log: ``` mobile: true mobile: true ``` When I disconnect from 3G and connect to WI-FI in log: ``` WIFI: true WIFI: true WIFI: true ``` getActiveNetworkInfo returns only the network connected to now, but does not return the network from which I was disconnected. If I use deprecated intent.getParcelableExtra(ConnectivityManager.EXTRA_NETWORK_INFO) in log I see: When I disconnect from WI-FI and connect to 3G: ``` WIFI: false mobile: true ``` When I disconnect from 3G and connect to WI-FI: ``` mobile: false WIFI: true ``` But I do not want to use deprecated api. How to use modern api to get network from which I was disconnected?

Original source