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无法在Simulator Xcode 6中运行应用

[英]Unable to run app in Simulator Xcode 6

原文 2014-09-01 15:22:22 7 4 swift/ ios-simulator/ ios8/ xcode6

Yesterday i was testing my app in the iOS simulator and everything was working fine. 昨天我正在iOS模拟器中测试我的应用程序，并且一切正常。 I then decided to run the app on my iPhone and i got the error unable to install application, Unknown error occurred this has happened before so I cleaned my build folder (as this has fixed this issue before) however, the same error occurred. 然后，我决定在iPhone上运行该应用程序，但出现了unable to install application, Unknown error occurred之前曾发生过unable to install application, Unknown error occurred ，因此我清理了构建文件夹（因为之前已解决了此问题），但是，发生了相同的错误。 I then ran the app in the iOS simulator again and now i get the error Unable to run app in Simulator, An error was encountered while running (Domain = LaunchServicesError, Code = 0) . 然后，我再次在iOS模拟器中运行该应用程序，现在出现错误Unable to run app in Simulator, An error was encountered while running (Domain = LaunchServicesError, Code = 0) 。 I find this very weird as i didn't change anything besides trying to run the app on my iPhone. 我觉得这很奇怪，因为除了尝试在iPhone上运行该应用程序外，我没有进行任何更改。 I have tried every solution given on this post and still no luck. 我已经尝试过此帖子中给出的所有解决方案，但仍然没有运气。

I'm sorry if my question doesn't contain much detail but as I said I didn't change anything and it was building and running fine a minute before plugging in my iPhone and trying to run it on there. 很抱歉，如果我的问题没有包含太多细节，但是正如我所说，我没有进行任何更改，因此它在插入并尝试在iPhone上运行之前的一分钟运行良好。

Any help would be much appreciated. 任何帮助将非常感激。

edit 编辑

I tried running other projects (with and without extensions) and they are working on both simulator and iPhone, therefore the problem must be within my project. 我尝试运行其他项目（带有和不带有扩展名），并且它们在模拟器和iPhone上都可以运行，因此问题一定在我的项目内。 (my project does have a today extension) （我的项目确实有今天的延期）

4 个解决方案

In that kind of cases I usually : 在这种情况下，我通常：

Product > Clean 产品>清洁
Close xCode 关闭xCode
Delete the Derived Data (in ~/Library/Developer/Xcode/DerivedData subfolders) 删除派生数据（在〜/ Library / Developer / Xcode / DerivedData子文件夹中）
Delete the app on the iPhone 在iPhone上删除应用
Reboot the iPhone 重新启动iPhone
Restart and rebuild 重新启动并重建

I had this problem. 我有这个问题。 In my case, it was caused by the Build value being blank. 在我的情况下，这是由于Build值为空白引起的。 After putting a value there, and resetting the simulator once more, the issue went away. 在此输入值并再次重置模拟器后，问题就消失了。

I had the same problem and checking the system log carefully helped me to identify a coliding library that was causing this error. 我遇到了同样的问题，仔细检查系统日志有助于我识别导致此错误的冲突库。 You can also check this answer if you are using extensions. 如果使用扩展名，也可以检查此答案。

Generally it means there is a problem with the build, it may be due to old cache (solved by a clean build) or a project definition error (missing library, bad definition in info.plist, etc). 通常，这意味着构建存在问题，这可能是由于旧缓存（由干净的构建解决）或项目定义错误（缺少库，info.plist中的错误定义等）引起的。

In my case it happened only on iOS 8, turns out that my widget had the wrong bundle ID. 以我为例，它仅在iOS 8上发生，结果是我的小部件具有错误的包ID。