ScreenBrightness Service

Provides access to control and observe system and application screen brightness.

**Platform Support:**

Android

iOS

**Android Configuration:** To adjust system brightness on Android, add the following permission in pyproject.toml:

[tool.flet.android.permission]
"android.permission.WRITE_SETTINGS" = true

**Inheritance:** Inherits from Service.

Events

**on_application_screen_brightness_change** (EventHandler | None)

* Type: ScreenBrightnessChangeEvent * Description: Called when the application screen brightness changes.

**on_system_screen_brightness_change** (EventHandler | None)

* Type: ScreenBrightnessChangeEvent * Description: Called when the system screen brightness changes.

Methods

**can_change_system_screen_brightness()** -> bool

* Returns whether the app is allowed to change the system screen brightness.

**get_application_screen_brightness()** -> float

* Returns the current application screen brightness, in range 0.0..1.0.

**get_system_screen_brightness()** -> float

* Returns the current system screen brightness, in range 0.0..1.0.

**is_animate()** -> bool

* Returns True if brightness changes are animated (platform dependent).

**is_auto_reset()** -> bool

* Returns True if brightness resets automatically on lifecycle changes.

**reset_application_screen_brightness()**

* Resets the application screen brightness back to the system value.

**set_animate(animate: bool)**

* Enables or disables animation for brightness changes.

**set_application_screen_brightness(brightness: Number)**

* Sets the application screen brightness. Accepts values between 0.0 and 1.0.

**set_auto_reset(auto_reset: bool)**

* Enables or disables automatic reset to system brightness on lifecycle changes.

**set_system_screen_brightness(brightness: Number)**

* Sets the system screen brightness. Accepts values between 0.0 and 1.0.