bitmap question II

[MarkoMylo]

i have imageview1 generated in sub Globals of main.
I initialized (loaded) bitmap picture (large photo 2000x2000) and now i want to put one part of that picture (first 100x100) with destrect to show at imageview1 ...

i tried something but wrong...

help...

 

[eps]

Take a look here http://www.b4x.com/forum/basic4andr...ns/8030-reading-sprite-sheet-2.html#post59328

That should give you enough to go on.

 

[MarkoMylo]

Take a look here http://www.b4x.com/forum/basic4andr...ns/8030-reading-sprite-sheet-2.html#post59328

That should give you enough to go on.

not what i looking for
simply, i want to display one part of some previously loaded bitmap (one part od 100x100 from 1000x1000) in imageview form

 

[Erel]

If this is a jpeg file then you can use the JPEG library to only load this part.
Otherwise you will need to load the complete image and use Canvas to draw part of it to the ImageView.

 

[MarkoMylo]

If this is a jpeg file then you can use the JPEG library to only load this part.
Otherwise you will need to load the complete image and use Canvas to draw part of it to the ImageView.

ok, i try to use canvas but without result
this is my code

Dim Canvas1 As Canvas
Dim DestRect As Rect
Dim SrcRect As Rect

Activity.LoadLayout("320p")
slika.initialize(File.DirRootExternal, "z.jpg")
DestRect.Initialize(10dip, 10dip, 10dip + 100dip, 10dip + 100dip)
SrcRect.initialize (0,0,30,30)
Canvas1.DrawBitmap(slika, SrcRect, DestRect)
iv1.SetBackgroundImage (Canvas1.Bitmap)

it freezes on canvas1.drawbitmap
???


so... i just need that connection between canvas and imageview because later i want imageview to be "clickable"

 

[Erel]

Please use [ code ] [ /code ] tags (without spaces) when posting code.

it freezes on canvas1.drawbitmap

Press F5 and check the error in the logs. You didn't initialize Canvas.