iOS上的多线程和Grand Central调度

now i am trying to understand the concept of gcd. using grand central dispatch how to implement multithreading in my application.i have the idea about the gcd concept but i cant implement the concept to my application.i need a simple example with blocks to understand the multithreading using gcd.please help me...

现在我想了解gcd的概念。使用大中心调度如何在我的应用程序中实现多线程。我有关于gcd概念的想法但我无法将这个概念实现到我的应用程序。我需要一个简单的例子用块来理解多线程使用gcd.please帮助我...

2 个解决方案

#1

Ok.. The most simple example )

好..最简单的例子）

You can write this code in any method. For example

您可以使用任何方法编写此代码。例如

  -(void) viewDidLoad {   
     [super viewDidLoad];  
     dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
       //Here your non-main thread.
       NSLog (@"Hi, I'm new thread");
       dispatch_async(dispatch_get_main_queue(), ^{
       //Here you returns to main thread.
       NSLog (@"Hi, I'm main thread");
       });
   });
}

#2

Try this, its very clear and easy - http://en.wikipedia.org/wiki/Grand_Central_Dispatch

试试这个，非常简单明了 - http://en.wikipedia.org/wiki/Grand_Central_Dispatch

#1