iOS 13.0模拟器运行时不可用

Question

我安装了 Xcode-11-beta 和 macOS 10.15 beta。一开始我可以正常玩

SwiftUI preview

。但是当我尝试将 Xcode-beta 从最初安装的

~/Downloads

目录移动到

/Applications

时，预览无法工作。错误如下：

所以我把它移回

~/Downloads

，希望事情能像以前一样顺利。但它给出了同样的错误。

此后，我重新安装了它，但仍然出现此错误。谁能帮我解决一下吗？

诊断报告内容是这样的：

== DATE:

Wednesday, June 5, 2019 at 10:25:46 PM China Standard Time



== PENDING U

    PDATE REASONS:





== PREVIEW UPDATE ERROR:

    unexpected error occurred

    Error Domain=com.apple.CoreSimulator.SimError Code=161 "The iOS 13.0 simulator runtime is not available." UserInfo={NSLocalizedRecoverySuggestion=Download the iOS 13.0 simulator runtime from the Components section in Xcode's Preferences., NSLocalizedFailureReason=runtime path not found, NSLocalizedDescription=The iOS 13.0 simulator runtime is not available.}



== VERSION INFO:

    Tools: 11M336w

    OS:    19A471t



== ENVIRONMENT:

    [x] In valid workspace
    [x] Project is using the new build system
        Previews are available for targets that are built with the new build system. Change your project to use the new build system.
    [x] Selected scheme (Landmarks)
        Select a scheme from the scheme picker in the toolbar
    [x] Selected run destination (iPhone 8)
        Select a run destination from the scheme picker in the toolbar
    [x] Have workspace arena
        Try quitting and reopening your workspace
    [x] Have build arena
        Try quitting and reopening your workspace
    [x] Open file has supported build settings

Answer 1

CoreSimulator 目前不喜欢将

simruntime

包从其下方移出。通过从

~/Downloads

启动，它意识到了 iOS 13 的

iOS.simruntime

，然后你移动了它。

在这种特定情况下，您可以通过杀死

com.apple.CoreSimulator.CoreSimulatorService

来解决该问题。

Answer 2

奇怪的是，我早上醒来，启动电脑，

Canvas

和

iOS 13.0 Simulator

现在可以工作了。

所以，我想解决这个问题的办法可能只是残酷的重启。 ;]

Answer 3

XCode 11 升级以一种我不完全理解的奇怪方式破坏了模拟器 - 我尝试过的任何方法都无法让模拟器在升级后运行，而且我找不到太多明确的答案来解释为什么 情况确实如此，但以下两个命令为我解决了这个问题：

• sudo xcrun simctl shutdown  all

• sudo xcrun simctl erase all

Answer 4

通过以下命令修复

sudo killall -9 com.apple.CoreSimulator.CoreSimulatorService