从画布上删除路径 - Android电子 [英] Deleting a path from a canvas - Android
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问题描述
我想从画布上删除路径或使其透明,我用下面的方法来做到这一点:
I am trying to delete a path from a canvas or make it transparent, I am using the following method to do this:
Canvas canvas = new Canvas(bmap);
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setColor(Color.TRANSPARENT);
Path path=new Path();
//Add lines/arcs to path...
paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));//tried SRC,CLEAR
canvas.drawPath(path, paint);
但路径中填充黑色,我要特别强调透明,这可能吗?
But the path is being filled with black color, I want to make that transparent, is that possible?
推荐答案
是的,它是可能的。尝试
yes it is possible. Try
paint.setAlpha(200);
您可以将值从0到255。
you can insert values from 0 to 255.
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