请检查是否添加了任何第三方lib与plist。有些时候第三方lib有信息plist导致的问题。

我有类似的问题(xCode 6.2)的示例代码下载。我试图在信息中将可执行名称设置为默认。但是这并没有起作用。

相反，将Compiler for C/ c++ /Objective-C更改为Default Compiler(Apple LLVM 6.0)，而不是Unsupported Compiler(com.apple.compilers.llvmgcc42) for project。

None of the provided answers worked for me. In my case, I finally fixed the error by updating the target architectures in Build Settings/Architectures/Valid Architectures to $(ARCHS_STANDARD), as arm64 was missing. This was not prohibiting the project to build, although a warning was issued recommending updating the valid architectures, but the "app could not be opened" error was shown at run time. I surmise this error is rather generic and not always linked with a permission issue, but may be displayed when the generated app package is invalid.

在我的情况下主要。在“构建阶段”的“编译源”列表中没有包含main(…)函数。要检查是否是这种情况，进入Build Phases并查看，如果您的主。m出现在“编译源”列表中。

对我来说，一个简单的产品->清洁工作很棒

也许可以考虑安装最新版本的Xcode。

在尝试了所有其他的解决方案(对我来说并不管用)之后，我这样做了，这个问题自动得到了解决。