blocks|key|1126317|text|在我看来，最好的方法是使用GCD调度，也就是中央调度(GCD)。它限制你使用iOS+4或更高版本，但它非常简单易用。在后台线程上执行一些处理，然后在主运行循环中对结果执行某些操作的代码非常简单和紧凑：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1126318|dispatch_async(+dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,+0),+%5E{
++++//+Add+code+here+to+do+background+processing
++++//
++++//
++++dispatch_async(+dispatch_get_main_queue(),+%5E{
++++++++//+Add+code+here+to+update+the+UI/send+notifications+based+on+the
++++++++//+results+of+the+background+processing
++++});
});|code-block|syntax|javascript|1126319|如果您还没有这样做，请在libdispatch/GCD/block上查看WWDC+2010的视频。|1126320|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

In my opinion, the best way is with libdispatch, aka Grand Central Dispatch (GCD). It limits you to iOS 4 and greater, but it's just so simple and easy to use. The code to do some processing on a background thread and then do something with the results in the main run loop is incredibly easy and compact:

<pre><code>dispatch_async( dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
 // Add code here to do background processing
 //
 //
 dispatch_async( dispatch_get_main_queue(), ^{
 // Add code here to update the UI/send notifications based on the
 // results of the background processing
 });
});
</code></pre>

If you haven't done so already, check out the videos from WWDC 2010 on libdispatch/GCD/blocks.

blocks|key|911338|text|在iOS中多线程的最好方法是使用GCD+(中央调度中心)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|911339|//creates+a+queue.

dispatch_queue_t+myQueue+=+dispatch_queue_create("unique_queue_name",+NULL);

dispatch_async(myQueue,+%5E{
++++//stuffs+to+do+in+background+thread
++++dispatch_async(dispatch_get_main_queue(),+%5E{
++++//stuffs+to+do+in+foreground+thread,+mostly+UI+updates
++++});
});|code-block|syntax|javascript|911340|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The best way for the multithreading in iOS is using GCD (Grand Central Dispatch).

<pre><code>//creates a queue.

dispatch_queue_t myQueue = dispatch_queue_create("unique_queue_name", NULL);

dispatch_async(myQueue, ^{
 //stuffs to do in background thread
 dispatch_async(dispatch_get_main_queue(), ^{
 //stuffs to do in foreground thread, mostly UI updates
 });
});
</code></pre>

blocks|key|1126382|text|我会尝试人们发布的所有技术，看看哪种最快，但我认为这是最好的方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1126383|[self+performSelectorInBackground:@selector(BackgroundMethod)+withObject:nil];|code-block|syntax|javascript|1126384|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I would try all the techniques people have posted and see which is the fastest, but I think this is the best way to do it.

<pre><code>[self performSelectorInBackground:@selector(BackgroundMethod) withObject:nil];
</code></pre>

blocks|key|911382|text|我已经在NSThread上添加了一个类别，它可以让你轻松地在块中执行线程。你可以从这里复制代码。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|911383|https://medium.com/@umairhassanbaig/ios-how-to-perform-a-background-thread-and-main-thread-with-ease-11f5138ba380|offset|length|911384|entityMap|0|LINK|mutability|MUTABLE|url|http://iOS%2520:%2520How%2520to%2520perform%2520a%2520Background%2520thread%2520and%2520Main%2520thread%2520with%2520ease%2520using%2520blocks.^0|0|0|35|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

I have added a category on NSThread that will let you execute threads in blocks with ease. You can copy the code from here.

<a href="http://iOS%20:%20How%20to%20perform%20a%20Background%20thread%20and%20Main%20thread%20with%20ease%20using%20blocks." rel="nofollow noreferrer">https://medium.com/@umairhassanbaig/ios-how-to-perform-a-background-thread-and-main-thread-with-ease-11f5138ba380</a>

What is the best way to run code on a separate thread? Is it:

<pre><code>[NSThread detachNewThreadSelector: @selector(doStuff) toTarget:self withObject:NULL];
</code></pre>

Or:

<pre><code> NSOperationQueue *queue = [NSOperationQueue new];
NSInvocationOperation *operation = [[NSInvocationOperation alloc] initWithTarget:self
 selector:@selector(doStuff:)
 object:nil;
[queue addOperation:operation];
[operation release];
[queue release];
</code></pre>

I've been doing the second way but the Wesley Cookbook I've been reading uses the first.

iphone ios running in separate thread

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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在单独的线程上运行代码的最佳方式是什么？是不是：[NSThread detachNewThreadSelector: @selector(doStuff) toTarget:self withObject:NULL];或者：    NSOperationQueue *queue = [NSOperationQueue ...

问iphone ios在单独的线程中运行
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