Opening the ImageViewer automatically dismisses the StatusBar on Android

[murad-alm]

Describe the Issue

When the function showImageViewer() is called, the top Bar (Status Bar) in Android is automatically dismissed. Passing the argument immersive as false doesn't change this behaviour.

Expected behavior

The StatusBar shouldn't be hidden after returning from the "view image" screen.

Other Information

Before opening the ImageViewer:

      

After opening the ImageViewer:

      

Edit: typo

[jfahrenkrug]

@murad-alm Thank you for this thorough bug report. We'll take a look soon.

[murad-alm]

Solution Attempt 1:

Added this line
SystemChrome.setEnabledSystemUIMode(SystemUiMode.manual, overlays: SystemUiOverlay.values);
To the initState() function solved this behaviour when exiting the "viewImage" Screen with the top right x button.

Problem:

When using the back button (or swipe gesture) to close the Image/screen, this issue remains.

[murad-alm]

Strange Behaviour:

The onViewerDismissed() parameter/function is not being called when the dialog is closed by a back swipe or by using the back button.

Edit: this might be an issue on its own, but i thought i would add it to this issue, as it was a part of my attempt to solve this issue.

[murad-alm]

Workaround:

Setting the immersive: flase and useSafeArea: true would keep the StatusBar visible in the dialog and after closing it.
That being said, it is a workaround and for people who don't want the StatusBar to be visible when an Image Dialog is opened (as in my case), this might not be the answer.

Most importantly, and as mentioned in #15 (comment), the onViewerDismissed() bug should be fixed, as a back swipe or a back button press is more natural for mobile users than seeking the x button in the upper right corner (IMO).

@jfahrenkrug I'm interested to hear your opinion/answer :)

[jfahrenkrug]

@murad-alm Sorry for the delay. I've put up a PR here that should fix your issue: #19 Could you confirm that this does indeed fix things? Thanks :)