【代碼筆記】關於UIFont的一些define

一，效果圖。

二，工程圖。

三，代碼。

RootViewController.h

#import <UIKit/UIKit.h>

@interface RootViewController : UIViewController

@end

RootViewController.m

#import "RootViewController.h"
#import "Utils.h"

@interface RootViewController ()

@end

@implementation RootViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    //初始化背景圖
    [self addView];
    
    //初始化button
    [self initButton];
    
}
#pragma -mark -functions
//初始化背景圖
-(void)addView
{
    self.title=@"UIFont";
}
//初始化button
-(void)initButton
{
    UIButton *rightButton = [[UIButton alloc] initWithFrame:CGRectMake(50, 100, 100, 50)];
    [rightButton setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];
    rightButton.backgroundColor=[UIColor redColor];
    //給按鈕上的字設置大小
    [Utils setDefaultFont:rightButton size:20];
    [rightButton setTitle:@"完成" forState:UIControlStateNormal];
    [self.view addSubview:rightButton];

}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

Utils.h

#import <Foundation/Foundation.h>

@interface Utils : NSObject

+ (void)setDefaultFont:(id)sender size:(float)size;

@end

Utils.m

#import "Utils.h"

@implementation Utils

//給某個按鈕上的數字設置大小
+ (void)setDefaultFont:(id)sender size:(float)size{
    [sender setFont:[UIFont fontWithName:@"Helvetica" size:size]];
}

@end