[android-developers] Getting a complete bitmap.

I have a bitmap, a canvas, and an imageview. They are set up something
like this:

mBitmap = Bitmap.createBitmap((int) mWidth, (int) mHeight,
Bitmap.Config.ARGB_8888);
mCanvas = new Canvas(mBitmap);
mImageView.setImageBitmap(mBitmap);

I flood the mCanvas with a color like this:

mCanvas.drawColor(color);

I then draw on the canvas at various points like this:

mCanvas.drawLine(inputDownX, inputDownY, inputUpX, inputUpY,
thisPaint);

I would like to get the image drawn on the screen and use this to do
that:

BitmapDrawable drawable = (BitmapDrawable) mImageView.getDrawable();
Bitmap bitmap = drawable.getBitmap();

When I do that though, even though there is a drawing on the screen,
all I see in the created bitmap is the flood color...none of the
lines.

Any idea what is going on? I thought the getDrawable().getBitmap()
should get everything but it's almost like the mCanvas.drawLine is
going to something other than where the drawColor is, but it isn't
coded that way.

Thanks!

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