System Settings

You can access the system configuration related to user preferences, such as ringtone, wallpaper, and font using system settings.

The main features of the Tizen.System.SystemSettings class include the following:

• Managing system settings

  You can retrieve the current system settings.

• Monitoring system setting changes

  You can set event handlers to monitor changes in the system settings.

Prerequisites

To enable your application to use the system setting functionality, follow these steps:

1. To use the Tizen.System.SystemSettings class, the application has to request permission by adding the following privilege to the tizen-manifest.xml file:

   
                   
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   <privileges>
      <privilege>http://tizen.org/privilege/systemsettings.admin</privilege>
   </privileges>
   

2. To make your application visible on the official site for Tizen applications only for devices that support the system setting features, add the following feature key to the tizen-manifest.xml file:

   
                   
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   <!--To use the WallpaperHomeScreen property and WallpaperHomeScreenChanged event-->
   <feature name="http://tizen.org/feature/systemsetting.home_screen"/>
   

   To use all the properties and events of Tizen.System.SystemSettings class, add the following feature key to the tizen-manifest.xml file:

   
                   
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   <feature name="http://tizen.org/feature/systemsetting"/>
   

   The following table lists the feature keys required by the specific properties and events of the Tizen.System.SystemSettings class.

   Table: Feature keys related to system settings

   You can scroll this table.

   Feature key	Property	Event
   http://tizen.org/feature/network.wifi	NetworkWifiNotificationEnabled	NetworkWifiNotificationSettingChanged
   http://tizen.org/feature/network.telephony	UltraDataSave, AutomaticTimeUpdate	UltraDataSaveChanged, UltraDataSavePackageListChanged, AutomaticTimeUpdateChangedEventArgs
   http://tizen.org/feature/accessibility.grayscale	AccessibilityGrayscale	AccessibilityGrayscaleChanged
   http://tizen.org/feature/accessibility.negative	AccessibilityNegativeColor	AccessibilityNegativeColorChanged
   http://tizen.org/feature/systemsetting.font	DefaultFontType, FontType, FontSize	FontSizeChanged, FontTypeChanged
   http://tizen.org/feature/systemsetting.home_screen	WallpaperHomeScreen	WallpaperHomeScreenChanged
   http://tizen.org/feature/systemsetting.incoming_call	IncomingCallRingtone, SoundNotification	IncomingCallRingtoneChanged, SoundNotificationChanged
   http://tizen.org/feature/systemsetting.lock_screen	LockscreenApp, WallpaperLockScreen	LockScreenAppChanged, WallpaperLockScreenChanged
   http://tizen.org/feature/systemsetting.notification_email	EmailAlertRingtone	EmailAlertRingtoneChanged

   You can also check whether a device supports a given feature using the TryGetValue() method of the Tizen.System.Information class, and accordingly handle the code when a feature is supported and not supported:

   
                   
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   const string HOME_SCREEN_FEATURE_KEY = "http://tizen.org/feature/systemsetting.home_screen";
   bool ret;
   
   if (Information.TryGetValue<bool>(HOME_SCREEN_FEATURE_KEY, out ret) == false)
   {
       /// Error handling
   }
   

   Note

   In TV applications, you can test the system settings functionality on an emulator only. Most target devices do not currently support this feature.

3. To use the methods and properties of the Tizen.System.SystemSettings class, include the Tizen.System namespace in your application:

   
                   
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   using Tizen.System;
   

Retrieve system settings

You can retrieve system settings with the properties of the Tizen.System.SystemSettings class.

To retrieve, for example, the ringtone for incoming calls, use the Tizen.System.SystemSettings.IncomingCallRingtone property:

                
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var getValue = Tizen.System.SystemSettings.IncomingCallRingtone;

Monitor system setting changes

You can set up notifications about system setting changes by defining event handlers and registering them for the Tizen.System.SystemSettings class events.

To monitor, for example, when the ringtone for incoming calls changes:

1. Define the event handler and register it for the IncomingCallRingtoneChanged event:

   
                   
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   private static void OnIncomingCallRingtoneChanged(object sender, Tizen.System.IncomingCallRingtoneChangedEventArgs e)
   {
       Assert.IsInstanceOf<string>(e.Value, "OnIncomingCallRingtoneChanged: IncomingCallRingtone not an instance of string");
   }
   
   Tizen.System.SystemSettings.IncomingCallRingtoneChanged += OnIncomingCallRingtoneChanged;
   

2. When you no longer need the event handler, deregister it:

   
                   
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   Tizen.System.SystemSettings.IncomingCallRingtoneChanged -= OnIncomingCallRingtoneChanged;
   

Related information

• Dependencies
  • Tizen 4.0 and Higher