Android 14 is not only a blessing for small screen devices but foldable phones as well and a good example of this scenario is the Dual Display mode. Yes, this new feature opens new possibilities for folding handsets and lets you span the app content across both screens (inner and outer).
Dual Display or Dual Screen Interpreter mode came into the spotlight and the Pixel Fold launch event. Eventually, it utilizes the inner and outer screen of the foldable to display live translations. As of now, this capability is available for third-party applications.
How does Android 14 Dual Display Mode work on foldable?
Google created the Jetpack WindowManager library which abstracts the lower-level WindowManager APIs in the framework. Developers use this library as an application dependency so they can make use of its APIs. For instance, the ones to manage split layouts and hinge angles.
Besides, there are several modules that developers load into the app process at runtime. These modules help in enabling two activities simultaneously side-by-side in a multi-pane layout.
In simple words, the window area module offers apps access to additional displays on some foldable and multi-display devices. When used correctly by the OEM, the module enabled apps to make use of rear display mode so that they could show content on the outer display while the phone was unfolded.
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