从png，Android创建圆形图像
[英]create a circular image from a png, android
问题描述
Given an image file (png) I would like to specify the coordinates within the image for the center of a circle and the radius and have the routine cut out that circle and display the new image. 
给定一个图像文件（png），我想在图像内为圆心和半径指定坐标，并让例程切出该圆并显示新图像。 I have looked at ShapeDrawable but that only seems to do a single color using a Paint attribute. 我已经看过ShapeDrawable，但是使用Paint属性似乎只能做一种颜色。 The other drawing classes also seem to use Paint but I can't figure out how to use an image for the background of a drawn cirle. 其他绘图类似乎也使用Paint，但是我不知道如何在绘制的背景中使用图像。 thanks much 非常感谢
1 个解决方案
解决方案1
0 2011-04-26 17:07:29
Take a look at xferModes. 看一下xferModes。 I think there are some good examples in the api-demos. 我认为api-demos中有一些很好的例子。
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