iOSUIView模糊效果（ios 阴影效果）

uiview的阴影设置主要通过uiview的layer的相关属性来设置

阴影的颜色

?

1	imgview.layer.shadowcolor = [uicolor blackcolor].cgcolor;

阴影的透明度

?

1	imgview.layer.shadowopacity = 0.8f;

阴影的圆角

?

1	imgview.layer.shadowradius = 4.f;

阴影偏移量

?

1	imgview.layer.shadowoffset = cgsizemake(4,4);

?

1	imgview.layer.shadowoffset = cgsizemake(0,0);

其实从偏移量上可以看出来，即使偏移量为(0,0)时，围绕view的四周依然能看到一定阴影。

阴影的路径

除了通过上面的操作，我们还可以设定阴影的路径

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14

//路径阴影 uibezierpath *path = [uibezierpath bezierpath]; [path movetopoint:cgpointmake(-5, -5)]; //添加直线 [path addlinetopoint:cgpointmake(paintingwidth /2, -15)]; [path addlinetopoint:cgpointmake(paintingwidth +5, -5)]; [path addlinetopoint:cgpointmake(paintingwidth +15, paintingheight /2)]; [path addlinetopoint:cgpointmake(paintingwidth +5, paintingheight +5)]; [path addlinetopoint:cgpointmake(paintingwidth /2, paintingheight +15)]; [path addlinetopoint:cgpointmake(-5, paintingheight +5)]; [path addlinetopoint:cgpointmake(-15, paintingheight /2)]; [path addlinetopoint:cgpointmake(-5, -5)]; //设置阴影路径 imgview.layer.shadowpath = path.cgpath;

总结

以上就是这篇文章的全部内容，希望能对各位ios开发者们能有所帮助，如果有疑问大家可以留言交流。

原文链接：http://www.jianshu.com/p/575ce7d7b68f