Why Is My Android Broadcast Receiver for Internet Connectivity Called Multiple Times?

Broadcast Receiver for Checking Internet Connection in Android

In developing an Android application, it is crucial to monitor the availability of internet connectivity. The use of broadcast receivers provides a lightweight and efficient solution. However, in certain scenarios, you may encounter challenges that warrant troubleshooting.

Issue: Broadcast Receiver Called Multiple Times

One potential issue is that the broadcast receiver gets called twice, despite your intention for it to be invoked only when the network is available. To resolve this, examine the intent filters defined in the manifest file. If you have specified multiple actions, such as "android.net.conn.CONNECTIVITY_CHANGE" and "android.net.wifi.WIFI_STATE_CHANGED," the receiver will respond to both. Consider using only the "android.net.conn.CONNECTIVITY_CHANGE" action to limit the response to network changes.

Ensure Calling Only When Network is Available

The provided code checks whether the Wi-Fi or mobile network is available and notifies accordingly. This behavior is as expected. If you wish to call the receiver only when an internet connection is established, you can modify the code to check the current network status using a different approach.

Optimized Connectivity Checker

Instead of relying on broadcast receivers, you can implement a more efficient method for checking connectivity. The following snippet demonstrates how to determine if a device has internet access:

public boolean isOnline(Context context) {
    ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo netInfo = cm.getActiveNetworkInfo();
    // Check for null as in airplane mode, it may be null
    return (netInfo != null && netInfo.isConnected());
}

By using this method, you can explicitly check for internet connectivity and avoid unnecessary notifications.

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