我试着修改了一个画图变量,但是没有成功--我怎样才能使一个位图看起来“半透明”呢?
发布于 2011-09-16 14:33:41
canvas.drawColor(Color.WHITE);
BitmapDrawable bd = (BitmapDrawable) getResources().getDrawable(R.drawable.loading);
Bitmap bm = bd.getBitmap();
Paint paint = new Paint();
paint.setAlpha(60); //you can set your transparent value here
canvas.drawBitmap(bm, 0, 0, paint);
发布于 2015-07-27 15:49:34
Paint p = new Paint();
p.setAlpha(70);
Bitmap image = BitmapFactory.decodeResource(getResources(), R.drawable.wallpaper);
canvas.drawBitmap(image, xPosition, yPosition, p);
https://stackoverflow.com/questions/7438537
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