object-c(UILabel)

 代码来自于QQ 公开课，只是做个笔记。
 

//
// ViewController.m
// UILabel
//
// Created by 叶枫 on 16/4/11.
// Copyright © 2016年 叶枫. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

-(void) CreateUI{
   
    //初始化一个 Label标签
    UILabel* label = [[UILabel alloc] init] ;
    
    label.text =  @"你好！世界! My name is yefeng,my age is 33!我想要 test看看结果" ;
    
    //放入 屏幕位置 大小
    label.frame = CGRectMake(100, 100, 160, 40);
    
    //标签颜色
    label.backgroundColor = [UIColor redColor];
    
    //背景颜色
    self.view.backgroundColor = [UIColor grayColor];
    
    label.font = [UIFont systemFontOfSize:12] ;
    
    label.textColor = [UIColor blueColor];
    
    //Label标签加入视图中
    [self.view addSubview:label];
    
    //设置 阴影
    label.shadowColor = [UIColor grayColor];
    //设置 阴影偏移量
    label.shadowOffset = CGSizeMake(1, 1);
    
    label.textAlignment = NSTextAlignmentCenter;
    
    //设置label 默认 1行。
    //设置成0默认 是 多行显示
    //设置>1 按照该行数显示文字
    label.numberOfLines = 3 ;
    
    
}


- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    //相当于 C#的 Call方法
    [self CreateUI];
}

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

@end

Commond+R 编译