Android透明字体画法
Paint paint = new Paint();
paint.setColor(Color.BLUE);
paint.setAlpha(0x40);
canvas.drawText("Hello", 0, 0, paint);
此处要注意
paint.setColor(Color.BLUE);
paint.setAlpha(0x40);
的顺序。
参考:http://hi.baidu.com/fgfd0/blog/item/27b33dadfded66184b36d63e.html