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Very few applications should use this permission these windows are intended for system-level interaction with the user.

Regards to Android documents: Allows an application to open windows using the type TYPE_SYSTEM_ALERT, shown on top of all other applications. Open AndroidManifest.xml file and add the below permission: class WindowManager.InvalidDisplayException Exception that is thrown when calling addView(View, ViewGroup.LayoutParams) to a secondary display that cannot be. In order to do that, you have to follow below steps: 1 - Add permission Instead, we’ll user service!Īs you know, activityand dialoghave their own Window instance which provides standard UI policies such as a background, title area, default key processing, etc.Įven the service has Window! So, the solution here is that we will use the service’s Window to draw our desired view (that can be overlay on other application!). So, the very first question is: How can we do that? An activity with transparent background?Īctually, there’s no activityhere. This is theme.xml, the same code is on the dark and light theme.In this post, I’ll show you how to create a floating view like Facebook chatheads - the view that was drawn on top of other applications. And the window manager on Android handles everything you can see on the screen.

I think the problem is with API but I can't find how to solve this problem. WindowManager WindowManager is an interface that the app can use for communication with the window manager. Why does the form leak This is mainly when you open a pop window, as shown in the figure. My full-screen code is deprecated and the status bar (but it's only a black line, you can't see batter percentage and clock until you click on that black line) is showing on some devices while on Samsung Note 8 everything is okay. 3 badtokeneexception: cannot add window null token is invalid Run for your activity This is mainly about the form leakage of an activity in your Android, which is what we often call memory leakage.

So I created an app, but unfortunately, I stumbled upon a small problem. Exception that is thrown when calling addView(View, ViewGroup.LayoutParams) to a secondary display that cannot be found.