How to make UIButton's text alignment center?

问题:

I can't set the title of UIButton using IB as center. My title is multi line.
It is giving like this one

But I want like this one

I have given space in this but I don't want to do that. As it is not aligned exactly for some cases and I know there is a property of UILabel to set the alignment but I don't want to write a code for that.. just want to set everything from IB.

Thanks

回答1:

This will make exactly what you were expecting:

Objective-C:

 [myButton.titleLabel setTextAlignment:UITextAlignmentCenter];

For iOS 6 or higher it's

 [myButton.titleLabel setTextAlignment: NSTextAlignmentCenter];

as explained in tyler53's answer

Swift:

myButton.titleLabel?.textAlignment = NSTextAlignment.Center

回答2:

Use the line:

myButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;

This should center the content (horizontally).

And if you want to set the text inside the label to the center as well, use:

[labelOne setTextAlignment:UITextAlignmentCenter];

If you want to use IB, I've got a small example here which is linked in XCode 4 but should provide enough detail (also mind, on top of that properties screen it shows the property tab. You can find the same tabs in XCode 3.x):

回答3:

Solution1

You can set the key path in the storyboard

Set the text to your multiline title e.g. hello ⌥ + ↵ multiline

You need to press ⌥ + ↵ to move text to next line.

Then add the key path

titleLabel.textAlignment as Number and value 1, 1 means NSTextAlignmentCenter
titleLabel.numberOfLines as Number and value 0, 0 means any number of lines

This will not be reflected on IB/Xcode, but will be in centre at run time (device/simulator)

If you want to see the changes on Xcode you need to do the following: (remember you can skip these steps)

1. Subclass the UIButton to make the button designable:

   import UIKit
   @IBDesignable class UIDesignableButton: UIButton {}
   

2. Assign this designable subclass to the buttons you're modifying:

3. Iff done right, you will see the visual update in IB when the Designables state is "Up to date" (which can take several seconds):

---

Solution2

If you want to write the code, then do the long process

1.Create IBOutlet for button
2.Write code in viewDidLoad

btn.titleLabel.textAlignment = .Center
btn.titleLabel.numberOfLines = 0

---

Solution3

In newer version of xcode (mine is xcode 6.1) we have property attributed title
Select Attributed then select the text and press centre option below

P.S. The text was not coming multiline for that I have to set the

btn.titleLabel.numberOfLines = 0

回答4:

For UIButton you should use:-

[btn setContentHorizontalAlignment:UIControlContentHorizontalAlignmentCenter];

回答5:

For ios 8 and Swift

btn.titleLabel.textAlignment = NSTextAlignment.Center

or

btn.titleLabel.textAlignment = .Center

回答6:

For those of you who are now using iOS 6 or higher, UITextAlignmentCenter has been deprecated. It is now NSTextAlignmentCenter

EXAMPLE: mylabel.textAlignment = NSTextAlignmentCenter; Works perfectly.

回答7:

Assuming that btn refers to a UIButton, to change a multi-line caption to be centered horizontally, you can use the following statement in iOS 6 or later:

self.btn.titleLabel.textAlignment = NSTextAlignmentCenter;

回答8:

For swift 4, xcode 9

myButton.contentHorizontalAlignment = .center

回答9:

UITextAlignmentCenter is deprecated in iOS6

Instead you can use this code:

btn.titleLabel.textAlignment=NSTextAlinmentCenter;

回答10:

Actually you can do it in interface builder.

You should set Title to "Attributed" and then choose center alignment.

回答11:

For Swift 3.0

btn.titleLabel?.textAlignment = .center

回答12:

Try Like this :

yourButton.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
yourButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;

回答13:

UIButton will not support setTextAlignment. So You need to go with setContentHorizontalAlignment for button text alignment

For your reference

[buttonName setContentHorizontalAlignment:UIControlContentHorizontalAlignmentCenter];

回答14:

You can do this from storyboard. Select your button. Set Line Break 'Word Wrap', Set your title 'Plain' to 'Attributed'. Select 'Center alignment'. This part is important => Click ...(More) Button. And select line breaking mode to 'Character Wrap'.

回答15:

For Swift 4:

@IBAction func myButton(sender: AnyObject) {
    sender.titleLabel??.textAlignment = NSTextAlignment.center
    sender.setTitle("Some centered String", for:UIControlState.normal)
}