Window Manager

Window Manager helps application developers support new device form factors and provide a common API surface for different Window Manager features on both old and new platform versions. The initial release is aimed at the foldable devices, and future versions will extend to more display types and window features.

Latest Update	Current Stable Release	Next Release Candidate	Beta Release	Alpha Release
February 18, 2021	-	-	-	1.0.0-alpha03

Declaring dependencies

To add a dependency on Window Manager, you must add the Google Maven repository to your project. Read Google's Maven repository for more information.

Add the dependencies for the artifacts you need in the build.gradle file for your app or module:

dependencies {
    implementation "androidx.window:window:1.0.0-alpha03"
}

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Version 1.0.0

Version 1.0.0-alpha03

February 18, 2021

androidx.window:window:1.0.0-alpha03 is released. Version 1.0.0-alpha03 contains these commits.

New Features

Emit an empty value for WindowLayoutInfo when the OEM implementation is empty. This should make it easier to use the library on more devices. Since the APIs are asynchronous it is still recommended that apps write some defensive code and emit a default value after a timeout. We do not have any guarantees on OEM implementations and the initial value may be delayed.

Bug Fixes

Emit an empty value when the OEM library is missing. (Ide935)

Version 1.0.0-alpha02

January 27, 2021

androidx.window:window:1.0.0-alpha02 is released. Version 1.0.0-alpha02 contains these commits.

New Features

We have deprecated some APIs to help streamline the api and reduce mistakes. Some notable examples are removing the synchronous read operations from WindowManager and deprecating DeviceState. Synchronous read operations can lead to race conditions and have incorrect UI.
We have converted DisplayFeature to an interface that other features will implement going forward. Our first feature is FoldingFeature which is now the representation of a screen fold or a hinge. This also contains the state of the hinge replacing DeviceState.
WindowMetrics was introduced in Android 11 to provide developers with a simple way to query for metrics about a window, for example its position and size on screen and any system insets. We’ve backported the API in this release so that developers can leverage WindowMetrics and continue to support older Android versions. WindowMetrics can be obtained through the WindowManager#getCurrentWindowMetrics() and WindowManager#getMaximumWindowMetrics() APIs.

API Changes

Deprecate APIs that will be removed in the next alpha (Ib7cc4)
Updates ExtensionInterface to accept explicit Activity references. (I07ded)
Introduces the WindowMetrics API. (I3ccee)
Remove synchronous read methods from WindowManager (I69983)
Make ExtensionWindowBackend package protected. (Ied208)

Bug Fixes

Update ExtensionInterface APIs to accept visual contexts. (I8e827)

External Contribution

Merge DeviceState and WindowLayoutInfo so it is easier to access data. (Id34f4)

Version 1.0.0-alpha01

February 27, 2020

androidx.window:window:1.0.0-alpha01 and androidx.window:window-extensions:1.0.0-alpha01 are released. Version 1.0.0-alpha01 contains these commits. This is the first release of the Window Manager library.

New features

DisplayFeature: This new API identifies disruptions in the continuous flat screen surfaces such as hinges or folds
DeviceState: This new API provides the current posture of the phone from a list of defined postures (For example, CLOSED, OPENED, HALF_OPENED, etc.)