该文档已过时，可点击查看下面的最新官方文档链接
官方给出了flutter在iOS上的简单导入，但是当出现post_install仅能有一个的问题该怎么解决了？
解决思路：既然不能出现多次post_install, 那么只好将需要post_install的地方合并了
- 看官方配置pod
# “path/to” 是自己项目的路径
flutter_application_path = 'path/to/my_flutter/'
load File.join(flutter_application_path, '.ios', 'Flutter', 'podhelper.rb')
- 根据
flutter_application_path，找到自己项目下的podhelper.rb，将其复制到ios项目根目录下。 - 修改
podhelper.rb中涉及到的路径。 - 重新配置
Podfile中的podhelper.rb路径flutter_application_path
flutter_application_path ||= File.join(__dir__, '..', 'flutter_demo')
framework_dir = File.join(flutter_application_path, '.ios', 'Flutter')
- 对比
Podfile与podhelper.rb中post_install代码块的不同，然后合并到Podfile，并将podhelper.rb中的post_install代码块注释掉。 - 这是本人在flutter 1.0时的做法，现在flutter升级到了1.7.8, 还能正常运行。
- 下面贴出
Podfile的部分代码与podhelper.rb的全部代码，包括本人的注释。注意看注释哦
我的flutter项目名称是flutter_demo，ios项目名称TestFlutter。两个项目在同一个文件夹下，这样方便使用相对路径。
Podfile 部分代码
# 配置flutter:
# - swift与oc的桥接配置‘use_frameworks!’上边已经配置，这里就不配置了
# - bitcode 需要设置为NO, 工程中也已经设置，这里也不设置了。pod里的设置方法可参考：https://www.jianshu.com/p/bf3002de6a5e。个人不建议在pod中设置
# - 如果podfile中没使用post_install, 则可以直接使用下面两句代码就行了。但是已经使用了，所以需要从新配置。
# flutter_application_path = '../flutter_demo/'
# eval(File.read(File.join(flutter_application_path, '.ios', 'Flutter', 'podhelper.rb')), binding)
# - 将需要使用的podhelper.rb复制到ios项目中，然后按照iOS项目下podhelper.rb中写的步骤继续配置
# - 以下代码是导入flutter
#eval(File.read(File.join(__dir__, 'podhelper.rb')), binding)
# - framework_dir路径配置
flutter_application_path ||= File.join(__dir__, '..', 'flutter_demo')
framework_dir = File.join(flutter_application_path, '.ios', 'Flutter')
post_install do |installer|
installer.pods_project.targets.each do |target|
# 强制设置SWIFT_VERSION为'5'
target.build_configurations.each do |config|
config.build_settings['SWIFT_VERSION'] = '5.0'
end
if [].include? target.name
target.build_configurations.each do |config|
config.build_settings['SWIFT_VERSION'] = '4.2'
end
end
if target.name == 'Params' then
target.build_configurations.each do |config|
config.build_settings['GCC_OPTIMIZATION_LEVEL'] = '0'
end
elsif target.name == 'SVProgressHUD'
target.build_configurations.each do |config|
config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= ['$(inherited)']
config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] << 'SV_APP_EXTENSIONS'
end
elsif target.name == 'SSMessage'
target.build_configurations.each do |config|
config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= ['$(inherited)']
config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] << 'SSMESSAGE_NEWALERT=1'
end
# flutter
# elsif target.name == 'Flutter' || target.name == 'TestFlutter'
# target.build_configurations.each do |config|
# config.build_settings['ENABLE_BITCODE'] = 'NO'
# xcconfig_path = config.base_configuration_reference.real_path
# File.open(xcconfig_path, 'a+') do |file|
# file.puts "#include \"#{File.realpath(File.join(framework_dir, 'Generated.xcconfig'))}\""
# end
# end
end
target.build_configurations.each do |config|
config.build_settings['ENABLE_BITCODE'] = 'NO'
xcconfig_path = config.base_configuration_reference.real_path
File.open(xcconfig_path, 'a+') do |file|
file.puts "#include \"#{File.realpath(File.join(framework_dir, 'Generated.xcconfig'))}\""
end
end
end
end
podhelper.rb全部代码
# 文件改动解析：
# - 该文件从目标项目flutter_demo中复制过来
# - 方法parse_KV_file(), flutter_root() 不做修改
# - 由于该文件的路径改变了，所以需要修改flutter_application_path的值。__dir__ 应该表示当前路径
# - podfile不能使用多个post_install，所以post_install中的操作，移动到podfile中操作，并且将该文件中的操作注释掉。需要注意的是，修改其中的路径值。
# -
# -
# -
def parse_KV_file(file, separator='=')
file_abs_path = File.expand_path(file)
if !File.exists? file_abs_path
return [];
end
pods_array = []
skip_line_start_symbols = ["#", "/"]
File.foreach(file_abs_path) { |line|
next if skip_line_start_symbols.any? { |symbol| line =~ /^\s*#{symbol}/ }
plugin = line.split(pattern=separator)
if plugin.length == 2
podname = plugin[0].strip()
path = plugin[1].strip()
podpath = File.expand_path("#{path}", file_abs_path)
pods_array.push({:name => podname, :path => podpath});
else
puts "Invalid plugin specification: #{line}"
end
}
return pods_array
end
def flutter_root(f)
generated_xcode_build_settings = parse_KV_file(File.join(f, File.join('.ios', 'Flutter', 'Generated.xcconfig')))
if generated_xcode_build_settings.empty?
puts "Generated.xcconfig must exist. Make sure `flutter packages get` is executed in ${f}."
exit
end
generated_xcode_build_settings.map { |p|
if p[:name] == 'FLUTTER_ROOT'
return p[:path]
end
}
end
# If this wasn't specified, assume it's two levels up from the directory of this script.
flutter_application_path ||= File.join(__dir__, '..', 'flutter_demo')
framework_dir = File.join(flutter_application_path, '.ios', 'Flutter')
engine_dir = File.join(framework_dir, 'engine')
if !File.exist?(engine_dir)
# Copy the debug engine to have something to link against if the xcode backend script has not run yet.
debug_framework_dir = File.join(flutter_root(flutter_application_path), 'bin', 'cache', 'artifacts', 'engine', 'ios')
FileUtils.mkdir_p(engine_dir)
FileUtils.cp_r(File.join(debug_framework_dir, 'Flutter.framework'), engine_dir)
FileUtils.cp(File.join(debug_framework_dir, 'Flutter.podspec'), engine_dir)
end
pod 'Flutter', :path => engine_dir
pod 'FlutterPluginRegistrant', :path => File.join(framework_dir, 'FlutterPluginRegistrant')
symlinks_dir = File.join(framework_dir, '.symlinks')
FileUtils.mkdir_p(symlinks_dir)
plugin_pods = parse_KV_file(File.join(flutter_application_path, '.flutter-plugins'))
plugin_pods.map { |r|
symlink = File.join(symlinks_dir, r[:name])
FileUtils.rm_f(symlink)
File.symlink(r[:path], symlink)
pod r[:name], :path => File.join(symlink, 'ios')
}
# Ensure that ENABLE_BITCODE is set to NO, add a #include to Generated.xcconfig, and
# add a run script to the Build Phases.
# TODO(dnfield): Figure out a way to deliver the Build Phase scripts without manual user intervention.
# post_install do |installer|
# installer.pods_project.targets.each do |target|
# target.build_configurations.each do |config|
# config.build_settings['ENABLE_BITCODE'] = 'NO'
# xcconfig_path = config.base_configuration_reference.real_path
# File.open(xcconfig_path, 'a+') do |file|
# file.puts "#include \"#{File.realpath(File.join(framework_dir, 'Generated.xcconfig'))}\""
# end
# end
# end
# end
- 为什么复制
podhelper.rb，而不是直接修改了？？
因为Flutter Module经常重构.android，不知道什么时候podhelper.rb就被还原了。
