Draw bezierpath with rounded corners.

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iPhone

Objective-C

iOS

I am using the following code to show the pointer like triangle view.

UIView *triangleView = [[UIView alloc] initWithFrame:CGRectMake(70.0f,58.0f, self->_createAccountView.frame.size.width ,20.0f)];
   UIBezierPath* trianglePath = [UIBezierPath bezierPath];
   [trianglePath moveToPoint:CGPointMake(0, 0)];
   [trianglePath addLineToPoint:CGPointMake((self->_createAccountView.frame.size.width/7) -8, (self->_createAccountView.frame.size.height/4))];
   [trianglePath addLineToPoint:CGPointMake((self->_createAccountView.frame.size.width/5) , 0)];
   [trianglePath closePath];
   trianglePath.lineJoinStyle = kCGLineJoinRound;

   CAShapeLayer *triangleMaskLayer = [CAShapeLayer layer];
   [triangleMaskLayer setPath:trianglePath.CGPath];
   triangleView.backgroundColor = [UIColor colorWithRed:1.00 green:1.00 blue:1.00 alpha:1.0];

   triangleView.layer.mask = triangleMaskLayer;
   [self->_AccountView addSubview:triangleView];

This works fine but I want the pointing edge of the triangle view to be rounded. How can make it rounded? Any help is appreciated!

What I have tried:

I have tried the makeing the edges rounded using the addArcWithCenter,linecap,linejoin.