Summary: Ctors | Methods | Inherited Methods

WindowManager

Kotlin |Java

public final class WindowManager
extends Object

java.lang.Object
↳	androidx.window.WindowManager

Main interaction point with the WindowManager library. An instance of this class allows polling the current state of the device and display, and registering callbacks for changes in the corresponding states.

Summary

Public constructors
`WindowManager(Context context, WindowBackend windowBackend)` Get an instance of the class initialized with and connected to the provided `Context`.

Public methods
`DeviceState`	`getDeviceState()` Get the current device state.
`WindowLayoutInfo`	`getWindowLayoutInfo()` Get current window layout information for the associated `Context`.
`void`	`registerDeviceStateChangeCallback(Executor executor, Consumer<DeviceState> callback)` Register a callback for device state changes.
`void`	`registerLayoutChangeCallback(Executor executor, Consumer<WindowLayoutInfo> callback)` Register a callback for layout changes of the window of the current visual `Context`.
`void`	`unregisterDeviceStateChangeCallback(Consumer<DeviceState> callback)` Unregister a callback for device state changes.
`void`	`unregisterLayoutChangeCallback(Consumer<WindowLayoutInfo> callback)` Unregister a callback for window layout changes of the window.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()`
`boolean`	`equals(Object arg0)`
`void`	`finalize()`
`final Class<?>`	`getClass()`
`int`	`hashCode()`
`final void`	`notify()`
`final void`	`notifyAll()`
`String`	`toString()`
`final void`	`wait(long arg0, int arg1)`
`final void`	`wait(long arg0)`
`final void`	`wait()`

Public constructors

WindowManager

public WindowManager (Context context, 
                WindowBackend windowBackend)

Get an instance of the class initialized with and connected to the provided Context. All methods of this class will return information that is associated with this visual context.

Parameters
`context`	`Context`: A visual context, such as an `Activity` or a `ContextWrapper` around one, to use for initialization.
`windowBackend`	`WindowBackend`: Backing server class that will provide information for this instance. Pass a custom `WindowBackend` implementation for testing, or `null` to use the default implementation.

Public methods

getDeviceState

public DeviceState getDeviceState ()

Get the current device state.

Returns
`DeviceState`

See also:

DeviceState

getWindowLayoutInfo

public WindowLayoutInfo getWindowLayoutInfo ()

Get current window layout information for the associated Context. Must be called only after the it is attached to the window and the layout pass has happened.

Returns
`WindowLayoutInfo`

See also:

registerDeviceStateChangeCallback

public void registerDeviceStateChangeCallback (Executor executor, 
                Consumer<DeviceState> callback)

Parameters
`executor`	`Executor`
`callback`	`Consumer`

registerLayoutChangeCallback

public void registerLayoutChangeCallback (Executor executor, 
                Consumer<WindowLayoutInfo> callback)

Register a callback for layout changes of the window of the current visual Context. Must be called only after the it is attached to the window.

Parameters
`executor`	`Executor`
`callback`	`Consumer`

See also:

Activity.onAttachedToWindow()

unregisterDeviceStateChangeCallback

public void unregisterDeviceStateChangeCallback (Consumer<DeviceState> callback)

Unregister a callback for device state changes.

Parameters
`callback`	`Consumer`

unregisterLayoutChangeCallback

public void unregisterLayoutChangeCallback (Consumer<WindowLayoutInfo> callback)

Unregister a callback for window layout changes of the window.

Parameters
`callback`	`Consumer`