#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    /*
     
        UILabel 文本標(biāo)簽
     */
    
    //1.創(chuàng)建
    UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(50, 50, 300, 300)];
    
    //2.顯示
    [self.view addSubview:label];
    
    //3.設(shè)置屬性
    
        //①.文本內(nèi)容
    label.text = @"hello world";
    
        //②.字體字號,
        //系統(tǒng)字體大小,系統(tǒng)默認(rèn)是16
    label.font = [UIFont systemFontOfSize:26];
    
        //加粗字體大小
    label.font = [UIFont boldSystemFontOfSize:26];
    
        //查看所有字體
    NSLog(@"%@",[UIFont familyNames]);
    
        //指定字體和大小
    label.font = [UIFont fontWithName:@"Iowan Old Style" size:26];
    
        //③.字體顏色
    label.textColor = [UIColor redColor];
    
        //④.背景顏色
    label.backgroundColor = [UIColor greenColor];
    
        //⑤.顯示位置:系統(tǒng)默認(rèn)居左
    label.textAlignment = NSTextAlignmentCenter;//居中
    
//    label.textAlignment = NSTextAlignmentLeft;//居左
//    
//    label.textAlignment = NSTextAlignmentRight;//居右
    
        //⑥.設(shè)置行數(shù):默認(rèn)1行   0 = 自動匹配行數(shù)
    label.numberOfLines = 0;
    
        //⑦.尺寸自適應(yīng):自動根據(jù)文本的內(nèi)容多少調(diào)整label的大小
    [label sizeToFit];
}
@end


2016-02-24 16:21:01.074 UILabel[1528:196043] (
    Copperplate,
    "Heiti SC",
    "Iowan Old Style",
    "Kohinoor Telugu",
    Thonburi,
    "Heiti TC",
    "Courier New",
    "Gill Sans",
    "Apple SD Gothic Neo",
    "Marker Felt",
    "Avenir Next Condensed",
    "Tamil Sangam MN",
    "Helvetica Neue",
    "Gurmukhi MN",
    "Times New Roman",
    Georgia,
    "Apple Color Emoji",
    "Arial Rounded MT Bold",
    Kailasa,
    "Kohinoor Devanagari",
    "Kohinoor Bangla",
    "Chalkboard SE",
    "Sinhala Sangam MN",
    "PingFang TC",
    "Gujarati Sangam MN",
    Damascus,
    Noteworthy,
    "Geeza Pro",
    Avenir,
    "Academy Engraved LET",
    Mishafi,
    Futura,
    Farah,
    "Kannada Sangam MN",
    "Arial Hebrew",
    Arial,
    "Party LET",
    Chalkduster,
    "Hoefler Text",
    Optima,
    Palatino,
    "Lao Sangam MN",
    "Malayalam Sangam MN",
    "Al Nile",
    "Bradley Hand",
    "PingFang HK",
    "Trebuchet MS",
    Helvetica,
    Courier,
    Cochin,
    "Hiragino Mincho ProN",
    "Devanagari Sangam MN",
    "Oriya Sangam MN",
    "Snell Roundhand",
    "Zapf Dingbats",
    "Bodoni 72",
    Verdana,
    "American Typewriter",
    "Avenir Next",
    Baskerville,
    "Khmer Sangam MN",
    Didot,
    "Savoye LET",
    "Bodoni Ornaments",
    Symbol,
    Menlo,
    "Bodoni 72 Smallcaps",
    Papyrus,
    "Hiragino Sans",
    "PingFang SC",
    "Euphemia UCAS",
    "Telugu Sangam MN",
    "Bangla Sangam MN",
    Zapfino,
    "Bodoni 72 Oldstyle"
)

system //系統(tǒng)
boldSystem //加粗字體
font //字體
size //大小
alignment //對齊
fit //合適
alpha //阿爾法  透明度

屏幕快照 2016-02-24 下午4.21.03.png