IOS--GCD基础

TestController.m

 1 #import "TestController.h"
 2 #import "TestView.h"
 3 
 4 @interface TestController()
 5 
 6 @property(nonatomic,strong)UIButton *button;
 7 
 8 @end
 9 
10 @implementation TestController
11 
12 - (void)viewDidLoad
13 {
14     [super viewDidLoad];
15     
16     _button = [UIButton buttonWithType:UIButtonTypeSystem];
17     
18     _button.frame = CGRectMake(0, 20, 100, 20);
19     [_button setTitle:@"Hello" forState:UIControlStateNormal];
20     
21     [_button addTarget:self action:@selector(start:) forControlEvents:UIControlEventTouchUpInside];
22     
23     [self.view addSubview:_button];
24     
25 }
26 
27 //GCD
28 -(void)start:(UIButton*)sender
29 {
30     dispatch_queue_t queeue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
31     dispatch_async(queeue, ^{
32         [self thLoop];
33     });
34 }
35 
36 -(void)thLoop
37 {
38     for (int i =1; i<=10 ; i++) {
39         
40         //睡眠1秒
41         [NSThread sleepForTimeInterval:1];
42         NSLog(@"i=%d",i);
43     }
44     
45     NSLog(@"end");
46 
47 }
48 
49 
50 @end

 

posted @ 2016-03-02 14:55  yuge790615  阅读(167)  评论(0)    收藏  举报