如何在iOS Podfile中指定flutter-ffmpeg软件包？

问题描述

基于：this question， 我相信他们更改了Podfiles，使得此代码（来自教程）：

if name == 'Flutter_ffmpeg'
  pod name+'/min-gpl-lts',:path => File.join(symlink,'ios')
else
  pod name,'ios')

以及ffmpeg-Flutter文档中的以下代码： “按如下所示修改默认的#Plugin Pods块：”

# Prepare symlinks folder. We use symlinks to avoid having Podfile.lock
  # referring to absolute paths on developers' machines.
  system('rm -rf .symlinks')
  system('mkdir -p .symlinks/plugins')
  plugin_pods = parse_KV_file('../.Flutter-plugins')
  plugin_pods.each do |name,path|
    symlink = File.join('.symlinks','plugins',name)
    File.symlink(path,symlink)
    if name == 'Flutter_ffmpeg'
        pod name+'/<package name>','ios')
    else
        pod name,'ios')
    end
  end

不再起作用。这就是我当前的Podfile的样子。我要添加什么以便可以将Flutter_ffmpeg指定为“ / min-gpl-lts”。

# Uncomment this line to define a global platform for your project
platform :ios,'9.3'
pod 'Firebase/Auth'
pod 'Firebase/Firestore'
pod 'GoogleSignIn'
#pod 'Flutter_ffmpeg/min-gpl-lts' # when i uncomment this line,it says "multiple sources for dependency"

# 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

我尝试过将此Podfile与“分叉”功能的建议：

# Uncomment this line to define a global platform for your project
platform :ios,'9.3'
pod 'Firebase/Auth'
pod 'Firebase/Firestore'
pod 'GoogleSignIn'

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

project 'Runner',Flutter_root)

Flutter_ios_podfile_setup

# Create this "fork" of Flutter_install_ios_plugin_pods
def install_plugin_pods(ios_application_path = nil)
  # defined_in_file is set by CocoaPods and is a Pathname to the Podfile.
   ios_application_path ||= File.dirname(defined_in_file.realpath) if self.respond_to?(:defined_in_file)
   raise 'Could not find iOS application path' unless ios_application_path
 
   # Prepare symlinks folder. We use symlinks to avoid having Podfile.lock
   # referring to absolute paths on developers' machines.
 
   symlink_dir = File.expand_path('.symlinks',ios_application_path)
   system('rm','-rf',symlink_dir) # Avoid the complication of dependencies like FileUtils.
 
   symlink_plugins_dir = File.expand_path('plugins',symlink_dir)
   system('mkdir','-p',symlink_plugins_dir)
 
   plugins_file = File.join(ios_application_path,'..','.Flutter-plugins')
   plugin_pods = Flutter_parse_plugins_file(plugins_file)
   plugin_pods.each do |name,path|
     symlink = File.join(symlink_plugins_dir,name)
     File.symlink(path,symlink)
 
     # Changes relative to Flutter_ffmpeg
     if name == 'Flutter_ffmpeg'
         pod name+'/min-gpl-lts',:path => File.join('.symlinks',name,'ios')
     else
         pod name,'ios')
     end
   end
 end

target 'Runner' do
  use_frameworks!
  use_modular_headers!

  # Flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
  # this function ^ is specified as follows
  # def Flutter_install_all_ios_pods(ios_application_path = nil)
  #   Flutter_install_ios_engine_pod(ios_application_path)
  #   Flutter_install_ios_plugin_pods(ios_application_path)
  # end

  # use this subcall to do the first half of the above^ function
  Flutter_install_ios_engine_pod File.dirname(File.realpath(__FILE__))

  # use our "fork" to install the plug in pods (exactly the same as
  # the original function but with ffmpeg package specified)
  install_plugin_pods(File.realpath(__FILE__))
end

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

但这给我Xcode的GeneratedpluginRegistrant.m中的一个错误：Module 'apple_sign_in'not found.所以我认为Podfile无法正常工作。

我也尝试过将File.dirname(File.realpath(__FILE__))传递给函数install_plugin_pods：

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

target 'Runner' do
  use_frameworks!
  use_modular_headers!

  # Flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
  # this function ^ is specified as follows
  # def Flutter_install_all_ios_pods(ios_application_path = nil)
  #   Flutter_install_ios_engine_pod(ios_application_path)
  #   Flutter_install_ios_plugin_pods(ios_application_path)
  # end

  # use this subcall to do the first half of the above^ function
  Flutter_install_ios_engine_pod File.dirname(File.realpath(__FILE__))

  # use our "fork" to install the plug in pods (exactly the same as
  # the original function but with ffmpeg package specified)
  install_plugin_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

但是，这给了我Error running pod install.，我在两次构建之间运行Flutter clean。

解决方法

1. 将以下方法添加到新的Podfile中，并将<package name>替换为flutter_ffmpeg软件包名称。

def flutter_install_ios_plugin_pods(ios_application_path = nil)
  # defined_in_file is set by CocoaPods and is a Pathname to the Podfile.
  ios_application_path ||= File.dirname(defined_in_file.realpath) if self.respond_to?(:defined_in_file)
  raise 'Could not find iOS application path' unless ios_application_path

  # Prepare symlinks folder. We use symlinks to avoid having Podfile.lock
  # referring to absolute paths on developers' machines.

  symlink_dir = File.expand_path('.symlinks',ios_application_path)
  system('rm','-rf',symlink_dir) # Avoid the complication of dependencies like FileUtils.

  symlink_plugins_dir = File.expand_path('plugins',symlink_dir)
  system('mkdir','-p',symlink_plugins_dir)

  plugins_file = File.join(ios_application_path,'..','.flutter-plugins-dependencies')
  plugin_pods = flutter_parse_plugins_file(plugins_file)
  plugin_pods.each do |plugin_hash|
    plugin_name = plugin_hash['name']
    plugin_path = plugin_hash['path']
    if (plugin_name && plugin_path)
      symlink = File.join(symlink_plugins_dir,plugin_name)
      File.symlink(plugin_path,symlink)

      if plugin_name == 'flutter_ffmpeg'
          pod 'flutter_ffmpeg/<package name>',:path => File.join('.symlinks','plugins',plugin_name,'ios')
      else
          pod plugin_name,'ios')
      end
    end
  end
end

1. 确保Runner目标呼叫flutter_install_all_ios_pods。

target 'Runner' do
  flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
end