How to round the corners of a button

问题

I have a rectangle image (jpg) and want to use it to fill the background of a button with rounded corner in xcode.

I wrote the following:

UIButton *button = [[UIButton buttonWithType:UIButtonTypeRoundedRect] retain];
CGRect frame = CGRectMake(x, y, cardWidth, cardHeight);
button.frame = frame;
[button setBackgroundImage:backImage forState:UIControlStateNormal];

However, the button I get with that approach doesn't have its corners rounded: it is instead a plain rectangle that looks exactly like my original image. How can I get instead an image with rounded corner to represent my button?

Thanks!

回答1:

I think I got your problem, I tried the following solution with the UITextArea and I suppose this will work with UIButton as well.

first of all import this in your .m file -

#import <QuartzCore/QuartzCore.h>

and then in your loadView method add following lines

    yourButton.layer.cornerRadius = 10; // this value vary as per your desire
    yourButton.clipsToBounds = YES;

Hope this works for you and if yes do communicate.

回答2:

You can achieve by this RunTime Attributes

we can make custom button.just see screenshot attached.

kindly pay attention :

in runtime attributes to change color of border follow this instruction

1. create category class of CALayer

2. in h file

   @property(nonatomic, assign) UIColor* borderIBColor;
   

3. in m file:

   -(void)setBorderIBColor:(UIColor*)color {
       self.borderColor = color.CGColor;
   }
   
   -(UIColor*)borderIBColor {
       return [UIColor colorWithCGColor:self.borderColor];
   }
   

now onwards to set border color check screenshot

thanks

回答3:

You may want to check out my library called DCKit. It's written on the latest version of Swift.

You'd be able to make a rounded corner button/text field from the Interface builder directly:

It also has many other cool features, such as text fields with validation, controls with borders, dashed borders, circle and hairline views etc.

回答4:

Pushing to the limits corner radius up to get a circle:

    self.btnFoldButton.layer.cornerRadius = self.btnFoldButton.frame.height/2.0;

If button frame is an square it does not matter frame.height or frame.width. Otherwise use the largest of both ones.

回答5:

Import QuartCore framework if it is not there in your existing project, then import #import <QuartzCore/QuartzCore.h> in viewcontroller.m

UIButton *button = [[UIButton buttonWithType:UIButtonTypeRoundedRect]];
CGRect frame = CGRectMake(x, y, width, height); // set values as per your requirement
button.layer.cornerRadius = 10;
button.clipsToBounds = YES;

回答6:

UIButton* closeBtn = [[UIButton alloc] initWithFrame:CGRectMake(10, 50, 90, 35)];
//Customise this button as you wish then
closeBtn.layer.cornerRadius = 10;
closeBtn.layer.masksToBounds = YES;//Important

回答7:

First set width=100 and Height=100 of button

Objective C Solution

YourBtn1.layer.cornerRadius=YourBtn1.Frame.size.width/2;
YourBtn1.layer.borderColor=[uicolor blackColor].CGColor;
YourBtn1.layer.borderWidth=1.0f;

Swift 4 Solution

YourBtn1.layer.cornerRadius = YourBtn1.Frame.size.width/2
YourBtn1.layer.borderColor = UIColor.black.cgColor
YourBtn1.layer.borderWidth = 1.0

回答8:

If you want a rounded corner only to one corner or two corners, etc... read this post:

[ObjC] – UIButton with rounded corner - http://goo.gl/kfzvKP

It's a XIB/Storyboard subclass. Import and set borders without write code.

回答9:

For Swift:

button.layer.cornerRadius = 10.0

回答10:

updated for Swift 3 :

used below code to make UIButton corner round:

 yourButtonOutletName.layer.cornerRadius = 0.3 *
        yourButtonOutletName.frame.size.height

回答11:

Try my code. Here you can set all properties of UIButton like text colour, background colour, corner radius, etc.

extension UIButton {
    func btnCorner() {
        layer.cornerRadius = 10
        clipsToBounds = true
        backgroundColor = .blue
    }
}

Now call like this

yourBtnName.btnCorner()

回答12:

An alternative answer which sets a border too (making it more like a button) is here ... How to set rectangle border for custom type UIButton

回答13:

For iOS SWift 4

button.layer.cornerRadius = 25;
button.layer.masksToBounds = true;

回答14:

For Objective C:

submitButton.layer.cornerRadius = 5;
submitButton.clipsToBounds = YES;

For Swift:

submitButton.layer.cornerRadius = 5
submitButton.clipsToBounds = true

来源：https://stackoverflow.com/questions/5047818/how-to-round-the-corners-of-a-button