Android Question Transparent white icon is not seen on white background

[scsjc]

I would like to know how to make the icon visualize with a white line, and when the app background is white it will continue to be displayed.

I use this code in the notification, and I choose the icon inside the folder ... objects / res / drawable / icon.png

    Dim notification As Notification
    notification.Initialize2(notification.IMPORTANCE_LOW)
    notification.Icon = "icono"

icono:

result:

 

[scsjc]

I am convinced that it must be a problem of the Samsung, because the emulator works correctly.

Can you check the apk icon in the application? wetransfer: https://we.tl/t-4KpSp534q9

Thanks

 

[stevel05]

This one?

On a motorola g6 play.

 

[scsjc]

This one? View attachment 88307

On a motorola g6 play.

Sorry, do not think that the icon does not appear if there is no registration in the program and a service is activated.

I upload a file with the icon only example to check it.
Thank you so much

 

[stevel05]

OK, I get this:

Edit: uploaded larger picture

 

[scsjc]

OK, I get this:

View attachment 88312

Edit: uploaded larger picture

If I put the icon with LargeIcon with the same icon, I don't know why I see the app icon in color, then it works well on a dark and light screen.

But what I want is for the icon to be a white or black line, not the color one.

nb.LargeIcon(LoadBitmapResize(File.DirAssets, "icontray.png", 256dip, 256dip, False))

 

[stevel05]

How are you testing against a white background?

 

[scsjc]

How are you testing against a white background?

with white background the icon are in colour too.