viewPadding property

The number of physical pixels on each side of the display rectangle into which the application can render, but which may be partially obscured by system UI (such as the system notification area), or or physical intrusions in the display (e.g. overscan regions on television screens or phone sensor housings).

Unlike Window.padding, this value does not change relative to Window.viewInsets. For example, on an iPhone X, it will not change in response to the soft keyboard being visible or hidden, whereas Window.padding will.

When this property changes, onMetricsChanged is called.

The relationship between this Window.viewInsets, Window.viewPadding, and Window.padding are described in more detail in the documentation for Window.

See also:

• WidgetsBindingObserver, for a mechanism at the widgets layer to observe when this value changes.
• MediaQuery.of, a simpler mechanism for the same.
• Scaffold, which automatically applies the padding in material design applications.