队列希望IOS开发（66）之构建自己的分派队列

PS:今天上午，非常郁闷，有很多简单基础的问题搞得我有些迷茫，哎，代码几天不写就忘。目前又不当COO，还是得用心记代码哦！

1 前言

应用 dispatch_queue_create 函数。 创立你自己的、奇特命名的分派队列。

2 代码实例

ZYAppDelegate.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
//创立自己命名的队列
dispatch_queue_t firstSerialQueue = dispatch_queue_create("ZYAppDelegate.GCD.serialQueue1", 0);
//执行Block
dispatch_async(firstSerialQueue, ^{
NSUInteger counter = 0;
for (counter = 0;counter < 5;counter++){
NSLog(@"First iteration, counter = %lu", (unsigned long)counter);
} });
dispatch_async(firstSerialQueue, ^{
NSUInteger counter = 0;
for (counter = 0;
counter < 5;
counter++){
NSLog(@"Second iteration, counter = %lu", (unsigned long)counter);
} });
dispatch_async(firstSerialQueue, ^{
NSUInteger counter = 0;
for (counter = 0;
counter < 5;
counter++){
NSLog(@"Third iteration, counter = %lu", (unsigned long)counter);
} });
//释放队列
dispatch_release(firstSerialQueue);
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
// Override point for customization after application launch.
self.viewController = [[[ZYViewController alloc] initWithNibName:@"ZYViewController" bundle:nil] autorelease];
self.window.rootViewController = self.viewController;
[self.window makeKeyAndVisible];
return YES;
}

运行后控制台结果

每日一道理

正所谓“学海无涯”。我们正像一群群鱼儿在茫茫的知识之海中跳跃、 嬉戏，在知识之海中出生、成长、生活。我们离不开这维持生活的“海水”，如果跳出这个“海洋”，到“陆地”上去生活，我们就会被无情的“太阳”晒死。

2013-05-12 11:41:59.221 GCDQueueTest2[1030:1303] First iteration, counter = 0

2013-05-12 11:41:59.223 GCDQueueTest2[1030:1303] First iteration, counter = 1

2013-05-12 11:41:59.223 GCDQueueTest2[1030:1303] First iteration, counter = 2

2013-05-12 11:41:59.224 GCDQueueTest2[1030:1303] First iteration, counter = 3

2013-05-12 11:41:59.225 GCDQueueTest2[1030:1303] First iteration, counter = 4

2013-05-12 11:41:59.226 GCDQueueTest2[1030:1303] Second iteration, counter = 0

2013-05-12 11:41:59.227 GCDQueueTest2[1030:1303] Second iteration, counter = 1

2013-05-12 11:41:59.228 GCDQueueTest2[1030:1303] Second iteration, counter = 2

2013-05-12 11:41:59.229 GCDQueueTest2[1030:1303] Second iteration, counter = 3

2013-05-12 11:41:59.230 GCDQueueTest2[1030:1303] Second iteration, counter = 4

2013-05-12 11:41:59.232 GCDQueueTest2[1030:1303] Third iteration, counter = 0

2013-05-12 11:41:59.232 GCDQueueTest2[1030:1303] Third iteration, counter = 1

2013-05-12 11:41:59.233 GCDQueueTest2[1030:1303] Third iteration, counter = 2

2013-05-12 11:41:59.233 GCDQueueTest2[1030:1303] Third iteration, counter = 3

2013-05-12 11:41:59.234 GCDQueueTest2[1030:1303] Third iteration, counter = 4

3 结语

以上是所有内容，希望对大家有所帮助。

Demo下载地址：http://download.csdn.net/detail/u010013695/5363539

文章结束给大家分享下程序员的一些笑话语录：

警告

有一个小伙子在一个办公大楼的门口抽着烟，一个妇女路过他身边，并对他 说， “你知道不知道这个东西会危害你的健康？我是说， 你有没有注意到香烟 盒上的那个警告（Warning）？”

小伙子说，“没事儿，我是一个程序员”。

那妇女说，“这又怎样？”

程序员说，“我们从来不关心 Warning，只关心 Error”