Android Question Removing a canvas

[Mark.S]

how do you remove a canvas from a panel?

 

[Erel]

A canvas in B4A is not a view. It draws on the bitmap that is used as the view's background. What exactly do you need to do?

 

[Mark.S]

I need to turn on/off a canvas which a 4dip red line has been drawn around two adjacent labels with a arrow pointing to a third label.

On another point I should have upgraded to your latest version with the auto backup.
i've just lost a weeks work, PC blue screened, solid drive has failed

 

[Erel]

You have two options:

1. Clear the drawing with Canvas.DrawColor or B4XCanvas.ClearRect.
2. If you really want to "remove" the canvas then draw over a mutable bitmap with Canvas.Initialize2. Set the view background to be a BitmapDrawable when you want to draw over it and set it to whatever other background you like when it is not needed.


Start with option #1.