How to add a notification settings activity to the system settings

android, android-5.0-lollipop, android-manifest

Solution

You need to add the `Intent` category `Notification.INTENT_CATEGORY_NOTIFICATION_PREFERENCES` to the `Activity` you'd like to launch through your `AndroidManifest`. A simple example would be something like:

    <activity android:name="com.example.packagename.YourSettingsActivity" >

        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.NOTIFICATION_PREFERENCES" />
        </intent-filter>
    </activity>

For more information, refer to the Settings app and specifically the `NotificationAppList` and `AppNotificationSettings` fragments.

Results

Problem

On Android 5.0 there is an option through `Settings -> Sound & notification -> App notification -> Calendar (for example)` to go directly to the notification settings of the app. I also know it's a flag in the manifest as described in this DEV.BYTES talk. How can it be achieved, what is the flag used? Here is a screenshot for more clarification:

Original source