U ukimiku Active Member Licensed User Longtime User Aug 7, 2012 #1 I would like to draw a line on a bitmap and display it in an imageview. I try (in Sub Globals): Code: Copy Dim b As Bitmap: b.InitializeMutable(382dip, 248dip) Dim c As Canvas: c.Initialize2(b) Dim v As ImageView: v.Initialize("v"): Activity.AddView(v, 184dip, 27dip, 382dip, 248dip) v.Bitmap = b Later I try to draw a line on the bitmap via the canvas: Code: Copy c.Drawline(10dip, 10dip, b.Width - 30dip, b.Height - 40dip, Colors.Blue, 2dip) v.Invalidate But no line to be seen. Could you please help me find the mistake (in my concept & code)? Thanks. Regards, EDIT: Thanks for thinking about this. Turns out the drawing was working, but the imageview was under a panel holding the activity layout. v.bringtofront was needed before v.invalidate Last edited: Aug 7, 2012
I would like to draw a line on a bitmap and display it in an imageview. I try (in Sub Globals): Code: Copy Dim b As Bitmap: b.InitializeMutable(382dip, 248dip) Dim c As Canvas: c.Initialize2(b) Dim v As ImageView: v.Initialize("v"): Activity.AddView(v, 184dip, 27dip, 382dip, 248dip) v.Bitmap = b Later I try to draw a line on the bitmap via the canvas: Code: Copy c.Drawline(10dip, 10dip, b.Width - 30dip, b.Height - 40dip, Colors.Blue, 2dip) v.Invalidate But no line to be seen. Could you please help me find the mistake (in my concept & code)? Thanks. Regards, EDIT: Thanks for thinking about this. Turns out the drawing was working, but the imageview was under a panel holding the activity layout. v.bringtofront was needed before v.invalidate
