flutter 真机调试无法连接到 iphone

a.md

 flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, v1.7.8+hotfix.4, on Mac OS X 10.14.4 18E226, locale en-CN)
⣻ideviceinfo returned an error:
ERROR: Could not connect to lockdownd, error code -21

解决办法

brew update
brew uninstall ideviceinstaller
brew uninstall libimobiledevice
brew install --HEAD libimobiledevice
brew link --overwrite libimobiledevice
brew install --HEAD  ideviceinstaller
brew link --overwrite ideviceinstaller
sudo rm -rf /var/db/lockdown/*
sudo chmod -R 777 /var/db/lockdown

ref:

flutter/flutter#22595

libimobiledevice/libimobiledevice#721

b.md

Permission denied @ unlink_internal - /usr/local/.....

解决办法：

sudo chown -R $(whoami):admin /usr/local