It's not the case for TYPE_APPLICATION_OVERLAY, it was the case for TYPE_PHONE but that's deprecated. pressing the home button also hides the overlay window).Įdit: The question is how to have an overlay window that doesn't get removed when user clicks the home button / calling the launcher intent. Floating bubbles are just views attached to WindowManager with custom flags. For example, replying to messages through Floating bubbles. Using _APPLICATION_OVERLAY doesn't work (i.e. Photo by Andy Makely on Unsplash Introduction In Android, Floating bubbles or ChatHeads allow quick access to core features without fully opening the app. The behavious is still possible since Facebook's Messenger does it with its chat "Heads", based on the assumption that facebook doesn't get system app permissions since it's pre-installed on a lot of roms. ![]() Previously this was done with _PHONE, but this type is now deprecated and throws an exception on api 28: This article is part of the Floating Windows on Android series.By sticky I mean a window that doesn't get closed by calling the launcher intent ( intent.addCategory(Intent.CATEGORY_HOME). The whole source code for this article is available on Github.Įager to learn more about Android development? Follow me ( and Localazy ( on Twitter, or like Localazy on Facebook. We will address both of these problems in the next articles. The keyboard is not activated and doesn't appear. The window stays in the center of the screen, and we can't move it anywhere.The window is still there visible above them. As normal Android apps rely on the system to provide many of these features, I had to rewrite all of these features for Floating Apps from scratch.Īs you can see in the animation below, we open our new floating window and even switch apps. ![]() I will teach you more about all these issues in one of the next articles.Īlso, all running apps are registered with the global list of active windows, and that allows for many exciting features - listing all active apps, running some of them only once, reactivating running apps instead of rerunning them, cross-app state refreshing, etc.Īs you can see, there can be a vast logic. Also, the Application class can automatically solve a lot of shortcomings in floating technology. Furthermore, WindowManager supports and enhances the virtual desktop functions of Windows 10 and 11 (switching desktops with Hot-Keys, individual desktop icons, etc.) Remembers and restores the position and size of your programs and windows. When the app is launched, the information from its header file is used to create the app's instance and an instance of Window.Įach of the apps extends Application that provides a basic set of features for managing its lifecycle, defining menus, handling window size, position, minimizing, etc. With WindowManager, you can also minimize most windows to the system tray. DOCTYPE html>Headers files are kept in memory and used for listing available apps. Each of them has a header file that contains the necessary information about it - localized name, internal identifier, icon, list of required permissions, launch preferences, window presets, etc. ![]() If you are interested in how complex the logic behind simple floating windows can get, there is a bit of the background from Floating Apps. Private fun getCurrentDisplayMetrics (): DisplayMetrics ![]() Fortunately, it allows us to add and remove views directly, and if we add them with correct parameters, we have our floating windows! WindowManager is an interface that the app can use for communication with the window manager.Īnd the window manager on Android handles everything you can see on the screen. In this article, I will teach you how to show the actual floating window over other apps. There are three main classes of window types:
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