B4J Question Base64

[moore_it]

Hi,
can I save the contents of a canvas in a BASE64 string?

thanks in advance

 

[Erel]

Anything that can be converted to an array of bytes can be saved as a base64 string.

B4A / B4i sub to convert bitmap to an array of bytes: https://www.b4x.com/android/forum/threads/b4x-bytes-to-file.70111/#post-445167
It should be simple to modify it to work with B4J Image instead of Bitmap.

 

[moore_it]

yes but i don't understand how i do tranforming canvas in bytes

 

[XbNnX_507]

    Dim img As Image =    canvas.Snapshot2 ( fx.Colors.Transparent ) '<- canvas to image
    Dim out As OutputStream
    out.InitializeToBytesArray( 0 )
    img.WriteToStream( out )
    Dim encoded As String = su.EncodeBase64( out.ToBytesArray )
    File.WriteString( File.DirApp, "base64Image.txt", encoded ) ' <- creates a textFile 
    Log ( encoded ) '<- show the actual encoded text
     out.Close

Hope it Helps.

 

[moore_it]

oh yes !
Thanks XbNnX_507 !
Very exaustive ...