CODEWITHSUNDEEP
android
ChangUZ
ChangUZ

Reputation: 5448

Listener for enable/disable mobile data (not connected or disconnnected)

I test some actions (see below). 

ConnectivityManager.CONNECTIVITY_ACTION
WifiManager.NETWORK_STATE_CHANGED_ACTION
PhoneStateListener.LISTEN_DATA_CONNECTION_STATE (it is not actually action)
PhoneStateListener.LISTEN_DATA_CONNECTION_STATE (it is not actually action)

But they listen only state (connected or disconnected).

When wifi disconnected, It can listen (enable mobile data -> connnected -> broadcast - > listener)

When wifi copnnnected, It cannot listen (enable mobile data -> connetivity does not changed!)

I need wheather mobile data settings is enable or not

Can I listen mobile data enabled or disabled event?

Upvotes: 4

Views: 2643

Answers (2)

Ray W
Ray W

Reputation: 679

While there's no broadcast by the system for this, we can actually use a ContentObserver to get notified of when the user toggles the Mobile Data setting.

e.g:

ContentObserver mObserver = new ContentObserver(new Handler()) {
    @Override
    public void onChange(boolean selfChange, Uri uri) {
         // Retrieve mobile data value here and perform necessary actions
    }
};

...

Uri mobileDataSettingUri = Settings.Secure.getUriFor("mobile_data");
getApplicationContext()
                .getContentResolver()
                .registerContentObserver(mobileDataSettingUri, true,
                        observer);

Don't forget to unregister the observer appropriately! E.g.

getContentResolver().unregisterContentObserver(mObserver);

Upvotes: 2

Kevin Coppock
Kevin Coppock

Reputation: 134714

So, after digging into it a bit, it doesn't seem like any broadcasts are sent out when that value is changed. Even the mobile network settings fragment in the Android Settings app doesn't listen for changes; it only checks in onCreate() and onResume(). So it seems you can't listen for changes, but you can get the current state. Unfortunately, it's a private API so you'll have to use reflection:

public static boolean isMobileDataEnabled(Context ctx) {
    try {
        Class<?> clazz = ConnectivityManager.class;
        Method isEnabled = clazz.getDeclaredMethod("getMobileDataEnabled", null);
        isEnabled.setAccessible(true);
        ConnectivityManager mgr = (ConnectivityManager) 
                ctx.getSystemService(Context.CONNECTIVITY_SERVICE);
        return (Boolean) isEnabled.invoke(mgr, null);
    } catch (Exception ex) {
        // Handle the possible case where this method could not be invoked
        return false;
    }
}

Upvotes: 1

Related Questions