blocks|key|936881|text|在软件中有这样一种说法:添加一层间接层可以修复几乎所有的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|936882|让doSomething方法成为一个间接的shell，它只执行一个performSelectorOnMainThread来调用really_doSomething方法来完成一些实际的工作。或者，如果您不想更改doSomething方法，可以让模拟测试单元调用doSomething_redirect_shell方法来执行类似的操作。|936883|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

There's a saying in software that adding a layer of indirection will fix almost anything.

Have the doSomething method be an indirection shell that only does a performSelectorOnMainThread to call the really_doSomething method to do the actual Something work. Or, if you don't want to change your doSomething method, have the mock test unit call a doSomething_redirect_shell method to do something similar.

blocks|key|721230|text|以下是在Swift中实现这一点的更好方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|721231|runThisInMainThread+{+()+->+Void+in
++++//+Run+your+code
++++self.doSomething()
}

func+runThisInMainThread(block:+dispatch_block_t)+{
++++dispatch_async(dispatch_get_main_queue(),+block)
}|code-block|syntax|javascript|721232|它作为一个标准函数包含在我的存储库中，请查看它：https://github.com/goktugyil/EZSwiftExtensions|offset|length|721233|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/goktugyil/EZSwiftExtensions^0|0|0|O|1A|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

Here is a better way to do this in Swift:

<pre><code>runThisInMainThread { () -&gt; Void in
 // Run your code
 self.doSomething()
}

func runThisInMainThread(block: dispatch_block_t) {
 dispatch_async(dispatch_get_main_queue(), block)
}
</code></pre>

Its included as a standard function in my repo, check it out: <a href="https://github.com/goktugyil/EZSwiftExtensions" rel="nofollow">https://github.com/goktugyil/EZSwiftExtensions</a>

blocks|key|936970|text|现在在Swift+3中：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|936971|DispatchQueue.main.async{
+++self.doSomething()
}|code-block|syntax|javascript|936972|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|$]]

And now in Swift 3:

<pre><code>DispatchQueue.main.async{
 self.doSomething()
}
</code></pre>

blocks|key|936987|text|//+Draw+Line
++++func+drawPath(from+polyStr:+String){
++++++++DispatchQueue.main.async+{
++++++++++++let+path+=+GMSPath(fromEncodedPath:+polyStr)
++++++++++++let+polyline+=+GMSPolyline(path:+path)
++++++++++++polyline.strokeWidth+=+3.0
++++++++++++polyline.strokeColor+=+#colorLiteral(red:+0.05098039216,+green:+0.5764705882,+blue:+0.2784313725,+alpha:+1)
++++++++++++polyline.map+=+self.mapVu+//+Google+MapView
++++++++}

++++}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|936988|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>// Draw Line
 func drawPath(from polyStr: String){
 DispatchQueue.main.async {
 let path = GMSPath(fromEncodedPath: polyStr)
 let polyline = GMSPolyline(path: path)
 polyline.strokeWidth = 3.0
 polyline.strokeColor = #colorLiteral(red: 0.05098039216, green: 0.5764705882, blue: 0.2784313725, alpha: 1)
 polyline.map = self.mapVu // Google MapView
 }

 }
</code></pre>

First of all I am writing code for iphone.
I need to be able to call a method on the main thread without using <code>performSelectorOnMainThread</code>.
The reason that I don't want to use <code>performSelectorOnMainThread</code> is that it causes problem when I am trying to create a mock for unit testing.

<pre><code>[self performSelectorOnMainThread:@Selector(doSomething) withObject:nil];
</code></pre>

The problem is that my mock knows how to call <code>doSomething</code> but it doesn't know how to call <code>performSelectorOnMainThread</code>.

So Any solution?

Calling a method on the main 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。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

首先，我正在为iphone编写代码。我需要能够在不使用performSelectorOnMainThread的情况下调用主线程上的方法。我不想使用performSelectorOnMainThread的原因是，当我试图为单元测试创建模拟时，它会导致问题。[self performSelectorOnMainThread...

问在主线程上调用方法？
EN

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问在主线程上调用方法？EN

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问在主线程上调用方法？
EN