want to draw over a changing solid-color background

by Rob Y. » Fri, 23 Apr 2010 10:56:32 GMT

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 I'm trying to draw an animated picture over a background that I want
to shift gradually in color.

The picture is kept in a bitmap, and on each frame, I erase the
background to the new background color and then draw the bitmap on top
of it.  The bitmap was originally cleared to Color.TRANSPARENT, and
that works.  I can see the background color.  But as I animate my
image, each pixel in the bitmap that I 'erase' to Color.TRANSPARENT
seems to remain whatever color it originally was.  Eventually I just
end up with a big blob of color where the moving image should be.

Am I doing something wrong?  How come Color.TRANSPARENT results in
transparency when I use it to drawColor to my bitmap canvas, but not
when I draw with a Color.TRANSPARENT paint to the same canvas?


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2. Kloteran HTC Hero+Samsung Galaxy+3GS FU BNIB

Mods, permisi numpang jalum lagi ya...
Sebelumnya mo ngucapin met lebaran bagi yg merayakannya. Mohon maap lahir dan 
batin... :)

Setelah sukses dengan kloteran2 sebelumnya. Mau coba buka partai yang kesekian 
kalinya (lupa :D).
Kali aja ada yg mau ikut Kloteran untuk Gadget2 berikut ini:

1). iPhone 3G[S], 16GB dan 32GB
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Price* =  16GB = 9,1jt dan 32GB = 10,1jt. Dapatkan harga khusus bagi yg 
2). HTC Hero Android
- BNIB 100%
- Factory Unlocked
- Warna Black, White dan Brown
- BM
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Price = 7jt

3). Samsung Galaxy i7500 Android
- Brg harus Inden*
- BNIB 100%
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- Very Limited Stock !!!
- Price* = Japri ! (Clue: diatas HTC Hero)

- Pre-order tutup tgl 23 Sept.
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- Yang mau titip aksesoris buat Hero dan Magic juga boleh japri kalau mau 
- Btw, mohon dg sangat jangan japri ke email ini ya...

Thanks for jalumnya Mods... 
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Kirim 'masih' pake BerryHitam. Next time pake HTC Hero G2...! :))
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