问Android Studio无法识别cocoapods

EN

Launching lib/main.dart on iPhone 11 in debug mode...
Warning: CocoaPods not installed. Skipping pod install.
  CocoaPods is used to retrieve the iOS and macOS platform side's plugin code that responds to your plugin usage on the Dart side.
  Without CocoaPods, plugins will not work on iOS or macOS.
  For more info, see https://flutter.dev/platform-plugins
To install:
  sudo gem install cocoapods

CocoaPods not installed or not in valid state.
Error launching application on iPhone 11.

$ flutter --version
Flutter 1.20.3 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 216dee60c0 (11 days ago) • 2020-09-01 12:24:47 -0700
Engine • revision d1bc06f032
Tools • Dart 2.9.2

$ flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 1.20.3, on Mac OS X 10.15.6 19G2021, locale ja-JP)

[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
[✓] Xcode - develop for iOS and macOS (Xcode 11.6)
[✓] Android Studio (version 4.0)
[✓] VS Code (version 1.48.2)
[✓] Connected device (1 available)

• No issues found!

$ gem list cocoapods

*** LOCAL GEMS ***

cocoapods (1.8.0)
cocoapods-core (1.9.3, 1.8.0, 1.7.5)
cocoapods-deintegrate (1.0.4)
cocoapods-downloader (1.4.0)
cocoapods-plugins (1.0.0)
cocoapods-search (1.0.0)
cocoapods-stats (1.1.0)
cocoapods-trunk (1.5.0)
cocoapods-try (1.2.0)

name: jinro
description: A new Flutter application.
publish_to:
version: 1.0.0+1

environment:
  sdk: ">=2.7.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter
  http: ^0.12.2
  flutter_secure_storage: ^3.3.3
  cupertino_icons: ^0.1.3

dev_dependencies:
  flutter_test:
    sdk: flutter
flutter:
  uses-material-design: true