iOS设置可选择圆角方向的控件圆角

self.view.layer.cornerRadius =10.f;//如果设置圆角角度为半圆，则数值为控件高度的一半self.view.layer.masksToBounds = YES;//是否删除多余的位置

UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:btn.bounds byRoundingCorners:UIRectCornerAllCorners cornerRadii:CGSizeMake(10, 10)];//rect为控件的frame corners为圆角的位置 cornerRadii为圆角的大小CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];maskLayer.frame =frame;maskLayer.path = maskPath.CGPath;btn.layer.mask = maskLayer;