Android Question Bitmapdrawable problem

[grafsoft]

Hi,

I write something on a bitmap, loaded with a photo, save it and the resolution is down to 10%. I posted this before, but I forgot something: I do not need to see the graphics on the phone, just save it with a text.

Thank you

Sub Globals
   Dim bitbg As Bitmap
   Dim bdwBackground As BitmapDrawable
   Dim pnl As Panel
   Dim cvs As Canvas
end sub

Sub Activity_Create(FirstTime As Boolean)
 bitbg.Initialize(File.DirDefaultExternal,"test.png" )
 pnl.Initialize("pnl")
 Activity.AddView(pnl, 0, 0, 100%x, 100%y)Dim rectDest AsRect
 rectDest.Initialize(0, 0, pnl.Width, pnl.Height)
 cvs.Initialize (pnl)
 cvs.DrawBitmap(bitbg, Null, rectDest)
 cvs.DrawText ("test", 120dip, 120dip, Typeface.DEFAULT_BOLD, 50, Colors.Blue, "LEFT")
 Dim out AsOutputStream
 ' test out=File.OpenOutput (Main.outdir,"0test.png",False)
 cvs.Bitmap.WriteToStream (out,100,"PNG")
 out.Close

 

[Erel]

What is the size of test.png?

Make the panel size the same as the bitmap size, or better use a mutable bitmap instead of the panel.

 

[grafsoft]

Thank you.

The png was taken with the camera, 2592 * 1944

I tried the first sugggestion, just for a test:

Dim pnl As Panel
pnl.Initialize("pnl")
pnl.width=3000 ' program crashes here
pnl.Height=2000

This does not work.

Sorry for the stupid question, but what is a mutable bitmap and where can I find it?

I appreciate your help very much, on 7 days of the week!

 

[Erel]

You should post the error message from the logs.

In that case the error is because you cannot set the width and height before you add the panel to its parent.

Mutable bitmap: http://www.b4x.com/android/forum/pages/results/?query=mutable+bitmap&page=1&prefix=0

 

[grafsoft]

First suggestion: Works now, but still goes from 1,8 MB to 200 KB.

I will try the initializemutable now.

 

[grafsoft]

Still the same problem

 

[Erel]

Post the updated code.

 

[grafsoft]

Thank you. But the zip file with the photo was too large. What is the maximum size for upload?

 

[grafsoft]

Sorry, max. file size was in plain view, stupid me.

I uploaded it without the jpg. You coupld replace 17.jpg with any other photo.

 

[Erel]

I think that you misunderstood my previous answer. You need to create a mutable bitmap with the same size as the original bitmap and draw over this bitmap with Canvas.Initialize2.

 

[grafsoft]

I am looking for an example but I do not find one. I need to draw on a photo. Do you have a code snippet somewhere?

 

[Erel]

There are several examples: http://www.b4x.com/android/forum/pages/results/?query=draw+on+bitmap&page=1&prefix=0