内存分析不适用于 Xcode 9
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Memory profiling doesn't work with Xcode 9
提问by Tamás Sengel
I am using the latest version of Xcode 9 and macOS 10.13.
我使用的是最新版本的 Xcode 9 和 macOS 10.13。
When I try to make a memory graph from the current state of my application, it shows an empty screen that says No Selection.
当我尝试根据应用程序的当前状态制作内存图时，它会显示一个空屏幕，上面写着No Selection。
I also tried to profile and work with Instruments, but it did not allow me to run due to a permission error.
我还尝试分析和使用 Instruments，但由于权限错误，它不允许我运行。
Target failed to run.
Permission to debug [app name] was denied.
目标无法运行。
调试 [应用名称] 的权限被拒绝。
I am aware of these threadsand tried the suggestions available in them, but they didn't seem to work:
我知道这些线程并尝试了其中可用的建议，但它们似乎不起作用：
- Reddit - Has instruments stopped working for you in Xcode 9 due to a permission denied error? Is there a workaround for this?
- Apple Developer Forums - Xcode 9 - Instruments permission denied
- Stack Overflow - Why do I get instruments - “Target failed to run”?
- Stack Overflow - Can't launch my app in Instruments: At least one target failed to launch
- Reddit - 由于权限被拒绝错误，仪器是否在 Xcode 9 中停止为您工作？有解决方法吗？
- Apple Developer Forums - Xcode 9 - Instruments 权限被拒绝
- 堆栈溢出 - 为什么我会得到仪器 - “目标无法运行”？
- Stack Overflow - 无法在 Instruments 中启动我的应用程序：至少一个目标无法启动
Things that I tried:
我尝试过的事情：
- Restarting Xcode
- Emptying the Derived Data folder
- Cleaning the project
- Cleaning the Build folder
- Modifying the scheme's application environment to Debug instead of Release
- Manually managing provisioning profiles and selecting Development profiles for Debug and Release
- Trying simulators with different OS versions (iOS 11, iOS 10)
- 重启Xcode
- 清空派生数据文件夹
- 清理项目
- 清理构建文件夹
- 修改方案的应用环境为Debug而不是Release
- 手动管理配置文件并为调试和发布选择开发配置文件
- 尝试使用不同操作系统版本的模拟器（iOS 11、iOS 10）
Looks like it's a specific issue with Xcode 9.
看起来这是 Xcode 9 的一个特定问题。
Are there any workarounds for this issue?
是否有针对此问题的解决方法？
采纳答案by Tamás Sengel
Updating Xcode to 9.2solved this problem for me.
将 Xcode 更新到 9.2为我解决了这个问题。
回答by Tamás Sengel
I tried building the application on a physical deviceand it worked, hovever, the memory graph did not show my Swift classes (for e.g., my controllers were simply not there). Allocation observing worked fine with Instruments, nonetheless.
我尝试在物理设备上构建应用程序并且它工作正常，但是，内存图没有显示我的 Swift 类（例如，我的控制器根本不存在）。尽管如此，分配观察与仪器一起工作得很好。
It seems like this is an issue caused by the simulator.
这似乎是由模拟器引起的问题。
回答by Ankit Vyas
In My Case I was Using Xcode 9. When I have checked to Xcode-> Preferences->Locations->Command Line Tools = Xcode 8.3.3 so I just Changed from Xcode 8.3.3 to Xcode 9.0 and It starts working.
在我的情况下，我使用的是 Xcode 9。当我检查 Xcode-> Preferences->Locations->Command Line Tools = Xcode 8.3.3 所以我只是从 Xcode 8.3.3 更改为 Xcode 9.0 并开始工作。
回答by lucasl
In my case the Build Configuration for Profiling was set to Release instead of Debug in the Scheme. After changing it, I could just profile in the Simulator.
在我的情况下，分析的构建配置设置为发布而不是方案中的调试。更改后，我可以在模拟器中进行配置文件。
Hope this helps.
希望这可以帮助。
