报错
flutter项目在运行到ios 模拟器的时候报错：
Warning: CocoaPods not installed. Skipping pod install.
还有
Using new build systemnote: Planning buildnote: Constructing build descripti....
Xcode’s output:
↳
=== BUILD TARGET Runner OF PROJECT Runner WITH CONFIGURATION Debug ===
Debug.xcconfig line 1: Unable to find included file "Pods/Target Support
Files/Pods-Runner/Pods-Runner.debug.xcconfig"
Debug.xcconfig line 1: Unable to find included file “Pods/Target Support
Files/Pods-Runner/Pods-Runner.debug.xcconfig”
=== BUILD TARGET Runner OF PROJECT Runner WITH CONFIGURATION Debug ===
ld: framework not found Flutter
clang: error: linker command failed with exit code 1 (use -v to see
invocation)
Could not build the application for the simulator.
Error launching application on iPhone XR.
具体报错没记录，一开始也没想着会有这么麻烦。
提示
官方给出了两个提示执行命令：
brew install cocoapods
pod setup
这个其实在一开始配环境执行flutter doctor的结果之后也给了提示，也是配置mac环境的条件。
但是本来项目是可以运行到ios模拟器的，新项目也是可以运行的，但是最近项目改动较多，无从查起，没办法只能硬着头皮解决了。
在网上搜了一圈，并没有相关的解决方案，没办法，站不了巨人的肩上了，只能自己摸索了。
思路一
按照指示在终端执行brew install cocoapods，等了好一会，开始出现下载
==> Downloading https://homebrew.bintray.com/bottles/cocoapods-1.7.5.mojave.bottle.tar.gz
==> Downloading from https://akamai.bintray.com/5a/5a70fd60007975ce224824b1a8852ba9124faa6753061d0ecc024be4cebd6e8b?__gda__=exp=1565624237~hmac=b87d5d0111b49f600da053951890
下载到百分之几的时候就失败了，然后又重试，结果在百分之六十多的时候又失败了，应该是要fq，国内速度较慢。
然后又开始在网上搜CocoaPods的安装教程，搜了一圈下来，看着都麻烦。
思路二
然后我尝试在Android Studio自带的terminal中直接执行brew install cocoapods，默认是在项目根目录执行的，
yechaodeMacBook-Pro:wanandroid_flutter yechao$ brew install cocoapods
会有error提示
Error: Another active Homebrew update process is already in progress.
Please wait for it to finish or terminate it to continue.
但是可以下载，而且速度挺快的，
==> Downloading https://homebrew.bintray.com/bottles/cocoapods-1.7.5.mojave.bottle.tar.gz
==> Downloading from https://akamai.bintray.com/5a/5a70fd60007975ce224824b1a8852ba9124faa6753061d0ecc024be4cebd6e8b?__gda__=exp=1565624237~hmac=b87d5d0111b49f600da053951890
######################################################################## 100.0%
下载完成之后在执行 pod setup，又是一顿下载，这个要等一会了。
yechaodeMacBook-Pro:wanandroid_flutter yechao$ pod setup
Setting up CocoaPods master repo
$ /usr/local/bin/git clone https://github.com/CocoaPods/Specs.git --progress -- master
Cloning into 'master'...
remote: Enumerating objects: 260, done.
remote: Counting objects: 100% (260/260), done.
remote: Compressing objects: 100% (249/249), done.
Receiving objects: 10% (361304/3368611), 72.04 MiB | 57.00 KiB/s
完了之后再次尝试运行到ios模拟器，
ok，运行成功！
