UIView drawRect issue

Question

I want to make custom UIView with border. Here is my code:

- (void)drawRect:(CGRect)rect
{
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGContextSetLineWidth(context, 4.0);
    CGContextSetStrokeColorWithColor(context, [[UIColor blueColor] CGColor]);
    CGContextAddRect(context, self.frame);
    CGContextStrokePath(context);
}

And here is the result: enter image description here

All three UIView on this picture is my custom view, but only big UIView have the border. I don't understand why others have no border. What is wrong?

I make it via storyboard. I don't have more code, just custom class with this drawRect method — Maria, Mar 13 '14 at 08:27
Don't know what is happened but You've missed `[super drawRect:rect];` — Mani, Mar 13 '14 at 08:28

score 3 · Accepted Answer · answered Mar 13 '14 at 08:47

3

You need local coordinates. Change

CGContextAddRect(context, self.frame);

to

CGContextAddRect(context, self.bounds);

answered Mar 13 '14 at 08:47

Avt

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If my answer solves the question, please accept it. Someone can find this post searching solution for similar issue. – Avt Mar 13 '14 at 08:57

score 0 · Answer 2 · answered Mar 13 '14 at 08:33

0

You didn't specify the classname for subviews

why don't you try like this

anyView.layer.borderColor = [UIColor redColor].CGColor;
anyView.layer.borderWidth = 5.0f;

Or add this method in your custom view

-(void)awakeFromNib{

    [super awakeFromNib];

    self.layer.borderColor = [UIColor redColor].CGColor;
    self.layer.borderWidth = 5.0f;

}

answered Mar 13 '14 at 08:33

Vijay-Apple-Dev.blogspot.com

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What do you mean - You didn't specify the classname for subviews? I named it BorderedView and specify class name for all UIViews in storyboard. – Maria Mar 13 '14 at 08:37
Thanks for 2 and 3, but I need also make not full border - without upper line, for example. – Maria Mar 13 '14 at 08:37
add white plain view on top of your view, which will hide that border if you needed – Vijay-Apple-Dev.blogspot.com Mar 13 '14 at 08:43
It will be tableViewCell, not just view. So that's not the way. – Maria Mar 13 '14 at 08:48

score 0 · Answer 3 · answered Mar 13 '14 at 08:41

0

Yo have not added the path to your context

-(void)drawRect:(CGRect)rect
{
    [super drawRect:rect];

    CGContextRef context = UIGraphicsGetCurrentContext();
    CGPathRef path = CGPathCreateWithRect(rect, NULL);
    [[UIColor blueColor] setStroke];
    CGContextSetLineWidth(context, 4.0);
    CGContextAddPath(context, path);
    CGContextDrawPath(context, kCGPathFillStroke);
    CGPathRelease(path);
}

answered Mar 13 '14 at 08:41

Himanshu Joshi

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CGContextAddRect draws without path http://www.techotopia.com/index.php/An_iOS_7_Graphics_Tutorial_using_Core_Graphics_and_Core_Image – Maria Mar 13 '14 at 08:47
I have provided the answer which I use generally. and you have missed the point `CGRect rectangle = CGRectMake(60,170,200,80);`. check that – Himanshu Joshi Mar 13 '14 at 08:49
I've used self.frame (should use self.bounds, but now it does not matter). So CGRectMake is needless. – Maria Mar 13 '14 at 10:01
You don't need call super in this method too stackoverflow.com/a/15387059/2803425 – Maria Mar 13 '14 at 10:02

score 0 · Answer 4 · answered Mar 13 '14 at 08:49

0

Resolved! The problem was in self.frame for CGContextAddRect. It must be self.bounds to draw in my view.

answered Mar 13 '14 at 08:49

Maria

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UIView drawRect issue

4 Answers4