How Can Android Apps Efficiently Monitor Internet Connectivity?

Efficient Internet Connectivity Monitoring in Android Apps

In this section, we explore a practical solution for monitoring internet connectivity in Android applications.

Broadcast Receiver for Checking Internet Connection

The broadcast receiver you described is almost perfect; however, to ensure it's called only once, you need to modify the in the manifest file. Instead of two filters for both "android.net.conn.CONNECTIVITY_CHANGE" and "android.net.wifi.WIFI_STATE_CHANGED," use only the former. This will trigger the receiver only when the network connectivity changes, not when the Wi-Fi state changes.

For clarity, the following code snippet shows the corrected :

<intent-filter>
    <action android:name="android.net.conn.CONNECTIVITY_CHANGE"></action>
</intent-filter>

Regarding your second question, the code you provided does notify only when the internet is available. It checks both Wi-Fi and mobile network availability and responds accordingly.

Checking Internet Connectivity without a Broadcast Receiver

As an alternative to using a broadcast receiver, you can employ the following method to check internet connectivity:

public boolean isOnline(Context context) {

    ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo netInfo = cm.getActiveNetworkInfo();
    // Should check null because in airplane mode it will be a null
    return (netInfo != null && netInfo.isConnected());
}

This method provides a quick and easy way to determine if the device is connected to the internet.

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