Is it possible to edit UIAlertAction title font size and style?

Question

Now that iOS8 deprecated UIActionsheet and UIAlertview the customization working on iOS7 is not taking effect anymore. So far the only customization I'm aware is the tint color. And what I need is changing the title's font size and style which I haven't found any way of doing so with the new UIAlertAction.

Already referred to this but I'm still hoping there's a way to change at least the title size and font.

Providing you some of my code for UIAlertAction

UIAlertController * alertActionSheetController = [UIAlertController alertControllerWithTitle:@"Settings"
                                                                              message:@""
                                                                       preferredStyle:UIAlertControllerStyleActionSheet];
    UIAlertAction * aboutTheAppAction = [UIAlertAction actionWithTitle:@"About the App"
                                                                 style:UIAlertActionStyleDefault
                                                               handler:^(UIAlertAction * action){
                                                                   NSLog(@"About the app");
                                                                   [self openAbout];

                                                               }];


[alertActionSheetController addAction:aboutTheAppAction];
[self presentViewController:alertActionSheetController animated:YES completion:nil];

Caracas

look at this github.com/ianb821/IBActionSheet – Hoffarth

Well that'll work for both since it's made up of a new subclass of uiview but what I'm looking for is ways to edit styling of an alertaction. – Caracas

Answer 1

You can change UIAlertAction's Font and color. First you need to add UILabel Category

@interface UILabel (FontAppearance)
@property (nonatomic, copy) UIFont * appearanceFont UI_APPEARANCE_SELECTOR;
@end

@implementation UILabel (FontAppearance)

-(void)setAppearanceFont:(UIFont *)font {
    if (font)
        [self setFont:font];
}

-(UIFont *)appearanceFont {
    return self.font;
}

@end

Category File is also Uploaded on following URL https://www.dropbox.com/s/em91fh00fv3ut4h/Archive.zip?dl=0

After importing That file You need to call following function.

UILabel * appearanceLabel = [UILabel appearanceWhenContainedIn:UIAlertController.class, nil];
[appearanceLabel setAppearanceFont:yourDesireFont]]; 

Above code is tested on Color and font. and that will only valid for iOS8 or greater.

Pollination

This changes the font for the all the labels in UIAlertController's view. – Usurp

Thanks worked for me. I did put it into my own UILabel category that I already had, and the property declaration went in the .h I put method declarations for those new selectors in the .h as well I imported the .h where I used the UIAlertController – Vibrate

hey thank you the solution just have one query... how we can change the title color using the above category. – Starnes

Answer 2

It is possible to change alert action's font using private APIs. It may get you app rejected, I have not yet tried to submit such code.

let alert = UIAlertController(title: nil, message: nil, preferredStyle: .ActionSheet)

let action = UIAlertAction(title: "Some title", style: .Default, handler: nil)let attributedText = NSMutableAttributedString(string: "Some title")

let range = NSRange(location: 0, length: attributedText.length)
attributedText.addAttribute(NSKernAttributeName, value: 1.5, range: range)
attributedText.addAttribute(NSFontAttributeName, value: UIFont(name: "ProximaNova-Semibold", size: 20.0)!, range: range)

alert.addAction(action)

presentViewController(alert, animated: true, completion: nil)

// this has to be set after presenting the alert, otherwise the internal property __representer is nil
guard let label = action.valueForKey("__representer")?.valueForKey("label") as? UILabel else { return }
label.attributedText = attributedText

Brendonbrenk