Android Code Snippet Back to edge-to-edge with B4A Ver13.4 and SDK 35

Dear Erel has disabled the edge-to-edge feature in the new version he released (B4A 13.4 - resources 7.25). This will be a great help for developers who don't want their page layout to be cluttered. But for me, who loves edge-to-edge, there needs to be a way back. I found it from Erel's code and I summarized it as follows:

Important: It is assumed that you are using SDK 35 or 36.
Also, it should be pointed out that it takes effect only when the user's device is running Android 15 or higher (SDKVersion 35 or higher). Otherwise, the immersive mode is not the natural behaviour of Android and some other codes are needed.

To do this, simply remove this line from the manifest:

CreateResourceFromFile(Macro, Themes.LightTheme)

And instead, put a template from Google itself, something like this:

SetApplicationAttribute(android:theme, "@android:style/Theme.Material.Light")

It will be edge-to-edge, but the toolbar is still there. If you want the toolbar to move away, add this event to the main file:

Sub Activity_WindowFocusChanged(HasFocus As Boolean)
    Log(HasFocus)
    Dim ph As Phone
    If ph.SdkVersion<35 Then
            Log("SdkVersion<35- No effect!")
        Return
    End If
    If HasFocus Then
        Try
            Dim jo As JavaObject = Activity
            Sleep(1500)
            jo.RunMethod("setSystemUiVisibility", Array As Object(5894))
        Catch
            Log("setSystemUiVisibility did NOT work!")
        End Try
    End If
End Sub

and call it at the beginning of Sub Activity_Create like this:

Sub Activity_Create(FirstTime As Boolean)

    Activity_WindowFocusChanged(True)
 
    Dim pm As B4XPagesManager
    pm.Initialize(Activity)

End Sub

The line "Sleep(1500)" is for the toolbar to go away with a delay so that the user can see it go away and understand where to bring it back. The delay can be adjusted as desired.

care

 

[Matt S.]

The code was updated because the natural immersive mode runs only when the user's Android is 15 or higher (SDKVersion 35 or higher). Otherwise, the immersive mode is not the natural behaviour of Android and some extra codes will be needed.