UI设置圆角的方向

textFidlde.leftViewMode = UITextFieldViewModeAlways;

UIButton *btnGetCode = [UIButton buttonWithType:UIButtonTypeCustom];

[btnGetCode addTarget:self action:@selector(getCode:) forControlEvents:UIControlEventTouchUpInside];

[btnGetCode setTitle:@"获取验证码" forState:UIControlStateNormal];

btnGetCode.backgroundColor = MAINTONE;

[btnGetCode setBackgroundImage:[UIImage imageNamed:@"Background_Colour.png"] forState:UIControlStateNormal];

btnGetCode.frame = CGRectMake(0, 0, 100, 44);

// btnGetCode.layer.cornerRadius = 8.0;

// btnGetCode.layer.masksToBounds = YES;

UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:btnGetCode.layer.bounds byRoundingCorners: UIRectCornerBottomRight cornerRadii:CGSizeMake(10, 10)];

CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];

maskLayer.frame = btnGetCode.bounds;

maskLayer.path = maskPath.CGPath;

btnGetCode.layer.mask = maskLayer;

[textFidlde addRightViewWithBtn:btnGetCode];