Xcode 10.0模拟器无法启动

Question

我最近一直在尝试使用最新版本的Xcode（10.0），但是当我打开模拟器时出现错误提示

“模拟器无法启动”

我尝试下载以前的版本，但仍然遇到相同的错误。

Answer 1

您的模拟器可能会陷入某种循环，请尝试在bash中运行此程序：

以下几行删除所有模拟器

xcrun simctl shutdown all  
xcrun simctl delete $(xcrun simctl list | grep -o '[0-9A-F]\{8\}-[0-9A-F]\{4\}-[0-9A-F]\{4\}-[0-9A-F]\{4\}-[0-9A-F]\{12\}' | xargs)
xcrun simctl delete unavailable

然后，您可以再次通过xcrun simctl或通过xcode安装所有设备。只需在bash中逐行再次运行此代码：

# This takes latest runtime available in xcode build. (IT counts with beta...)
runtime=$(xcrun simctl list runtimes | grep "iOS" | tail -1 | awk -F' - ' '{print $3F}')

# Simulators should carry the iOS version. And probably CI Prefix.
# Check if simulators alreadz exists.
echo "The current iOS runtime is: $runtime"
xcrun simctl create "iPhone 7" com.apple.CoreSimulator.SimDeviceType.iPhone-7 $runtime