How can I pass my method an activity when it is not in an activity?

Question

I have a custom class SettingsPreferences where I handle the changing of a few settings for my Voice Recorder app. At the moment, I am trying to handle turning on and off Do Not Disturb mode.

I've created a method requestAccessNotificationPermission that is called by another method, checkIfNotifGranted , that checks if Notification Policy Access is granted.

@RequiresApi(api = Build.VERSION_CODES.M)
void checkIfNotifGranted() {
   if (!notificationManager.isNotificationPolicyAccessGranted()) {
       requestAccessNotificationPermission();
   }
}

@RequiresApi(api = Build.VERSION_CODES.M)
private void requestAccessNotificationPermission(Activity activity) {
    Intent intent = new Intent(Settings.ACTION_NOTIFICATION_POLICY_ACCESS_SETTINGS);
    activity.startActivity(intent);
}

My plan is that if this would work, I would then use the two methods below to handle the turning off and on of do not disturb mode.

 @RequiresApi(api = Build.VERSION_CODES.M)
void doNotDisturbOff() {
    notificationManager.setInterruptionFilter(NotificationManager.INTERRUPTION_FILTER_NONE);
}

@RequiresApi(api = Build.VERSION_CODES.M)
void doNotDisturbOn() {
    notificationManager.setInterruptionFilter(NotificationManager.INTERRUPTION_FILTER_ALL);
}

However, I do not know how to deal with this Activity problem. I tried to put this as an argument for the call to requestAccessNotificationPermission but it does not work.

I can't have these methods in my SettingsFragment as I can not call a non static method from a static context. Therefore, I have the code below to call the methods in my custom class.

final Preference dnd = findPreference("doNotDisturb");
assert  dnd != null;
dnd.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
            @Override
            public boolean onPreferenceChange(Preference preference, Object newValue) {
                String boolCheck = newValue.toString();
                if (boolCheck.equals("true")) {
                    new SettingsPreferences().checkIfNotifGranted();
                    new SettingsPreferences().doNotDisturbOn();
                }
                else if (boolCheck.equals("false")) {
                    new SettingsPreferences().checkIfNotifGranted();
                    new SettingsPreferences().doNotDisturbOff();
                }
                return false;
            }

        });

Any help or explanation would be greatly appreciated as I'm really stumped with this one.

Thank you.

Answer 1

You can't use this from inside an anonymous inner class. You will have to use MainActivity.this

Answer 2

You can pass create Application class and pass the MyApplication.getInstance() to your methos.

If you are using kotlin then simple set applicationContext .

Hope it may help.