Allow StatusBarBehavior to Hide Status Bar

[david-maw]

On Android at least, it is possible to hide the Statusbar icons altogether. This seems like a reasonable thing for StatusBarBehavior to be able to control for apps seeking an immersive experience.

[bijington]

I'm not sure it's simple enough to control through StatusBarBehavior. You can make you app full screen as per https://stackoverflow.com/questions/71361984/how-to-set-a-contentpage-in-maui-full-screen-or-immersive#71376589

[david-maw]

My experience of Android is strictly through .NET MAUI, so please bear that in mind when evaluating my response, think of it as like an AI response, grammatically correct but anything else is suspect.

As I experience full page mode it's in a Shell based MAUI application using XAML to define the UI. Pages with Shell.NavBarIsVisible="False" are shown in full page mode (a feature of Shell, I presume), other pages are not. If full page mode is enabled the status bar background is effectively transparent, the status bar icons are still shown though, they just overlay whatever is on the page. My idea is that for an immersive page you might not want to show the icons either, here's an example from the test app at https://github.com/david-maw/StatusBarHelper.git, the first one shows the initialization page with the status bar icons:

The alternative is the same page without the icons. This is courtesy of the StatusBarPageBehavior I created in the sample app. I've no idea whether this is the best way (or even a reasonable way) to do this, but I hope it illustrates the idea:

Conceptually, it seems simple, and I'm sure there are some subtleties that I'm missing, but this illustrates the idea. One issue is that in the second image the whole status bar and then some seems to be hidden, and the page has been drawn higher without it. That only happens on the second and subsequent visits to the page, the first time the bar is there, just without icons, which is what I was going for. However, the second and subsequent appearances (triggered by selecting "go to InitializationPage" in the flyout), the code is not hiding just the icons but the whole status bar and perhaps a little more, which is confusing to say the least. That behavior is definitely not simple in my book!

[david-maw]

Well, more research tells me it is NOT very simple to implement in the general case (as you wrote). In fact, I can't even figure out why my red background on the initial page in my sample code even extends to the status bar - I can only presume Shell is doing something clever (which I'd thought was using edge-to-edge but now I'm not so sure). I know how to hide the status bar icons for my initial page, so I think I'll just be content with that.