view设置圆角

UIView*view2=[[UIViewalloc]initWithFrame:CGRectMake(120,10,80,80)];

view2.backgroundColor=[UIColorredColor];[self.viewaddSubview:view2];

UIBezierPath*maskPath=[UIBezierPathbezierPathWithRoundedRect:view2.boundsbyRoundingCorners:UIRectCornerBottomLeft|UIRectCornerBottomRightcornerRadii:CGSizeMake(10,10)];CAShapeLayer*maskLayer=[[CAShapeLayeralloc]init];

maskLayer.frame=view2.bounds;

maskLayer.path=maskPath.CGPath;

view2.layer.mask=maskLayer;