如何解决flutter中的iOS部署目标问题

Posted 2023-02-23

【中文标题】如何解决flutter中的iOS部署目标问题

【英文标题】：how to resolve the iOS deployment target issue in flutter

【发布时间】：2021-02-20 10:34:18

【问题描述】：

我在反复为ios平台构建flutter应用程序时遇到了与IPHONEOS_DEPLOYMENT_TARGET 相关的问题，我不明白我应该如何纠正它

warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 14.1.99. (in target 'firebase_core' from project 'Pods')
warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 14.1.99. (in target 'firebase_auth' from project 'Pods')
warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 14.1.99. (in target 'firebase_storage' from project 'Pods')
warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 14.1.99. (in target 'firebase_messaging' from project 'Pods')
warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 14.1.99. (in target 'firebase_analytics' from project 'Pods')
warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 14.1.99. (in target 'cloud_functions' from project 'Pods')
warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 14.1.99. (in target 'cloud_firestore' from project 'Pods')
warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 14.1.99. (in target 'Flutter' from project 'Pods')
warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 14.1.99. (in target 'Firebase' from project 'Pods')
warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 14.1.99. (in target 'GoogleAppMeasurement' from project 'Pods')
warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 14.1.99. (in target 'FirebaseAnalytics' from project 'Pods')

我的 ios Flutter 项目的 pod 文件在这里

# Uncomment this line to define a global platform for your project
# platform :ios, '9.0'

# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
ENV['COCOAPODS_DISABLE_STATS'] = 'true'

project 'Runner', 
  'Debug' => :debug,
  'Profile' => :release,
  'Release' => :release,


def flutter_root
  generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'Generated.xcconfig'), __FILE__)
  unless File.exist?(generated_xcode_build_settings_path)
    raise "#generated_xcode_build_settings_path must exist. If you're running pod install manually, make sure flutter pub get is executed first"
  end

  File.foreach(generated_xcode_build_settings_path) do |line|
    matches = line.match(/FLUTTER_ROOT\=(.*)/)
    return matches[1].strip if matches
  end
  raise "FLUTTER_ROOT not found in #generated_xcode_build_settings_path. Try deleting Generated.xcconfig, then run flutter pub get"
end

require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)

flutter_ios_podfile_setup

target 'Runner' do
  use_frameworks!
  use_modular_headers!

  flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
end

post_install do |installer|
  installer.pods_project.targets.each do |target|
    flutter_additional_ios_build_settings(target)
  end
end

我也在 xcode 中打开项目后检查了版本设置，但无法理解我应该如何纠正这个问题。请指导如何修复 IPHONEOS_DEPLOYMENT_TARGET

【参考方案1】：

取消注释：

# platform :ios, '9.0' 

到

platform :ios, '9.0'

将以下内容替换为

post_install do |installer|
  installer.pods_project.targets.each do |target|
    flutter_additional_ios_build_settings(target)
  end
end

作者：

post_install do |installer|
  installer.pods_project.targets.each do |target|
    flutter_additional_ios_build_settings(target)
    target.build_configurations.each do |config|
      config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '9.0'
    end
  end
end

执行以下命令：

扑干净 颤振酒吧获取 cd ios && pod install 构建项目 关闭并重新打开 Xcode

【讨论】：

普通用户或 Flutter 新手将不知道在哪里更改这一切。

@PratikButani 在 Flutter 项目目录中更改此项 ==> ios ==> Podfile

这个，减去flutter_additional_ios_build_settings(target) 行有助于解决与 Ionic 类似的问题

【参考方案2】：

这是因为并非所有 pod 都针对 iOS 9.0。

您可以在 Podfile 中使用此解决方法

post_install do |installer|
    installer.pods_project.targets.each do |target|
        target.build_configurations.each do |config|
            config.build_settings.delete 'IPHONEOS_DEPLOYMENT_TARGET'
        end
    end
end