Android Question Getting views color

[tufanv]

hello'

I need the panels color. .color is write only. I need a sub to get the color of a view. I searched the forum and found this post.

https://www.b4x.com/android/forum/posts/134379/

But when i use getviewscolor(panel1) , panel 1 goes white. Every view goes white when i use get color on it. Is it an outdated solution, can we have an updated sub to get a color's view. ?

this is what happens

 

[Erel]

This code should still work. Make sure that you are not using the same canvas for anything else.

If it doesn't work for you then please upload a small project with the code.

 

[tufanv]

This code should still work. Make sure that you are not using the same canvas for anything else.

If it doesn't work for you then please upload a small project with the code.

in this example , when we use getviewscolor the red panels most portion is painted to black ( or the color of activity )

Attached it.

 

[Erel]

It is indeed related to a change in the way views handle their background. I've fixed this issue in Canvas.DrawViewable code.
For now you can use this instead:

Sub GetViewsColor(v As View) As Int
   Dim jo As JavaObject = v.Background
   Dim b As Rect = jo.RunMethod("copyBounds", Null)
   Dim destRect As Rect
   destRect.Initialize(0, 0, cvs.Bitmap.Width, cvs.Bitmap.Height)
   cvs.DrawDrawable(v.Background, destRect)
   jo.RunMethod("setBounds", Array(b))
   Return cvs.Bitmap.GetPixel(5dip, 5dip)
End Sub

 

[tufanv]

Thanks Erel !

 

[tufanv]

It is indeed related to a change in the way views handle their background. I've fixed this issue in Canvas.DrawViewable code.
For now you can use this instead:

Sub GetViewsColor(v As View) As Int
   Dim jo As JavaObject = v.Background
   Dim b As Rect = jo.RunMethod("copyBounds", Null)
   Dim destRect As Rect
   destRect.Initialize(0, 0, cvs.Bitmap.Width, cvs.Bitmap.Height)
   cvs.DrawDrawable(v.Background, destRect)
   jo.RunMethod("setBounds", Array(b))
   Return cvs.Bitmap.GetPixel(5dip, 5dip)
End Sub

I have got a problem with this. When I use
if getviewscolor(lbl1)= colors.transparent ıt makes problem. it does not recognize the color as transparent so i can't achieve what i want. Is there a fix for this

 

[tufanv]

by thw way if i use getviewscolor(lbl1)=colors.green it is not working but if i use colors.rgb(..) it works. So i think it does not recognize when we write colors.green or colors.red , we have to put in rgb . But what can i write for rgb for transparent ?

 

[Erel]

It doesn't matter whether you use Colors.Green, 0xFF00FF00 or Colors.RGB(0, 255, 0).
The value is the same.

What is the output of Log(GetViewsColor) for the transparent color?