UIButton 边框颜色和切割边角

self.cancelBtn.layer.cornerRadius = 20;

self.delayBtn.layer.masksToBounds = YES;

self.delayBtn.backgroundColor =[UIColor greenColor].CGColor;

self.cancelOrderevaluate.layer.cornerRadius = 20;

self.cancelOrderevaluate.layer.masksToBounds = YES;

self.cancelOrderevaluate.layer.borderWidth = 1.0;

self.cancelOrderevaluate.layer.borderColor =[UIColor greenColor].CGColor;

[self.cancelOrderevaluate setTitleColor:kNavigationColor forState:UIControlStateNormal];