I currently have the following situation in my flutter iOS/Android development process:
Every time flutter build runs it executes pod install which installs the regular Flutter Podfile
# Uncomment this line to define a global platform for your project
platform :ios, '10.0'
# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
ENV['COCOAPODS_DISABLE_STATS'] = 'false'
project 'Runner', {
'Debug' => :debug,
'Profile' => :release,
'Release' => :release,
}
def parse_KV_file(file, separator='=')
file_abs_path = File.expand_path(file)
if !File.exists? file_abs_path
return [];
end
generated_key_values = {}
skip_line_start_symbols = ["#", "/"]
File.foreach(file_abs_path) do |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)
generated_key_values[podname] = podpath
else
puts "Invalid plugin specification: #{line}"
end
end
generated_key_values
end
target 'Runner' do
use_frameworks!
use_modular_headers!
# Flutter Pod
copied_flutter_dir = File.join(__dir__, 'Flutter')
copied_framework_path = File.join(copied_flutter_dir, 'Flutter.framework')
copied_podspec_path = File.join(copied_flutter_dir, 'Flutter.podspec')
unless File.exist?(copied_framework_path) && File.exist?(copied_podspec_path)
# Copy Flutter.framework and Flutter.podspec to Flutter/ to have something to link against if the xcode backend script has not run yet.
# That script will copy the correct debug/profile/release version of the framework based on the currently selected Xcode configuration.
# CocoaPods will not embed the framework on pod install (before any build phases can generate) if the dylib does not exist.
generated_xcode_build_settings_path = File.join(copied_flutter_dir, 'Generated.xcconfig')
unless File.exist?(generated_xcode_build_settings_path)
raise "Generated.xcconfig must exist. If you're running pod install manually, make sure flutter pub get is executed first"
end
generated_xcode_build_settings = parse_KV_file(generated_xcode_build_settings_path)
cached_framework_dir = generated_xcode_build_settings['FLUTTER_FRAMEWORK_DIR'];
unless File.exist?(copied_framework_path)
FileUtils.cp_r(File.join(cached_framework_dir, 'Flutter.framework'), copied_flutter_dir)
end
unless File.exist?(copied_podspec_path)
FileUtils.cp(File.join(cached_framework_dir, 'Flutter.podspec'), copied_flutter_dir)
end
end
# Keep pod path relative so it can be checked into Podfile.lock.
pod 'Flutter', :path => 'Flutter'
# Plugin Pods
# 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)
pod name, :path => File.join(symlink, 'ios')
end
end
target 'OneSignalNotificationServiceExtension' do
use_frameworks!
pod 'OneSignal', '>= 2.9.3', '< 3.0'
end
as seen at the end to enable OneSignal push notifications in my app, I've added the OneSignalNotificationServiceExtension. Since the Flutter Runner needs use_frameworks!, I have to add this line to the OneSignal Extension target as well.
This leads to the following file being included unter "General" > "Framework and Libraries" on my OneSignal Target ("Pods_OneSignalNotificationServiceExtension.framework"): wrongly linked file
But this file probably doesn't exist so the build fails.
If I manually remove this file from XCode, the build works.
But since running Flutter in debug mode from my IDE runs pod install again, I can't remove this link, so my idea was to automate the removing in the post_install hook inside the Podfile.
But since I'm neither really familiar with Ruby nor seem to be able to find good documentation for methods/properties in this callback, I'm not getting it to work.
Here's something I've tried so far:
post_install do |installer|
installer.pods_project.targets.each do |target|
target.build_configurations.each do |config|
config.build_settings['ENABLE_BITCODE'] = 'NO'
end
if target.name == 'Pods-OneSignalNotificationServiceExtension'
all_filerefs = installer.pods_project.files
all_filerefs.each do |fileref|
#puts(fileref.path)
if fileref.path.end_with? "Pods_OneSignalNotificationServiceExtension.framework"
puts("Found Pods_OneSignalNotificationServiceExtension.framework fileref.")
build_phase = target.frameworks_build_phase
#puts("Determining if build phase needs correction.")
#all_filerefs.delete(fileref)
build_phase.remove_file_reference(fileref)
puts("Removing Pods_OneSignalNotificationServiceExtension.framework from OneSignalNotificationServiceExtension target")
end
end
end
end
end
But neither removing it from all_filerefs nor build_phase.remove_file_reference is quite working. Does anybody know how I can access the linked files from the "Framework and Libraries" section in XCode and how to remove said .framework-file?
Thanks a lot!
With the right google search I've managed to find a single result regarding this topic: https://titanwolf.org/Network/Articles/Article?AID=18711f19-4d55-49b9-a49e-8c4652dc0262#gsc.tab=0
I've took his function from "Fourth, add or remove framework to target"
def updateCustomFramework(project,target,path,name,command)
# Get useful variables
frameworks_group = project.groups.find { |group| group.display_name == 'Frameworks' }
frameworks_build_phase = target.build_phases.find { |build_phase| build_phase.to_s == 'FrameworksBuildPhase' }
embed_frameworks_build_phase = nil
target.build_phases.each do |phase|
if phase.display_name == 'Embed Frameworks'
embed_frameworks_build_phase = phase
end
# puts phase
end
if command == :add
# Add new "Embed Frameworks" build phase to target
if embed_frameworks_build_phase.nil?
embed_frameworks_build_phase = project.new(Xcodeproj::Project::Object::PBXCopyFilesBuildPhase)
embed_frameworks_build_phase.name = 'Embed Frameworks'
embed_frameworks_build_phase.symbol_dst_subfolder_spec = :frameworks
target.build_phases << embed_frameworks_build_phase
end
# Add framework search path to target
['Debug', 'Release'].each do |config|
paths = ['$(inherited)', path]
orgpath = target.build_settings(config)['FRAMEWORK_SEARCH_PATHS']
if orgpath.nil?
puts "path is empty----------"
target.build_settings(config)['FRAMEWORK_SEARCH_PATHS'] = paths
else
puts "path is not empty----------"
paths.each do |p|
if !orgpath.include?(p)
orgpath << p
end
end
end
end
# Add framework to target as "Embedded Frameworks"
framework_ref = frameworks_group.new_file("#{path}#{name}")
exsit = false
embed_frameworks_build_phase.files_references.each do |ref|
if ref.name = name
exsit = true
end
end
if !exsit
build_file = embed_frameworks_build_phase.add_file_reference(framework_ref)
frameworks_build_phase.add_file_reference(framework_ref)
build_file.settings = { 'ATTRIBUTES' => ['CodeSignOnCopy'] }
end
else
frameworks_build_phase.files_references.each do |ref|
#puts(ref.path)
if ref.path == "#{name}"
puts "delete #{name}"
frameworks_build_phase.remove_file_reference(ref)
#embed_frameworks_build_phase.remove_file_reference(ref)
break
end
end
end
end
And only changed if ref.name == "#{name}" to if ref.path == "#{name}".
I also realized that I can't use the pods_projects from the installer but need to open the xcodeproj-file myself. Here is my final post_install script:
post_install do |installer|
installer.pods_project.targets.each do |target|
target.build_configurations.each do |config|
config.build_settings['ENABLE_BITCODE'] = 'NO'
end
end
project_path = 'Runner.xcodeproj'
project = Xcodeproj::Project.open(project_path) # Opening the Runner.xcodeproj in the same folder as the Podfile
project.targets.each do |target|
if target.name == "OneSignalNotificationServiceExtension" # Find the OneSignal Target
updateCustomFramework(project, target, '', 'Pods_OneSignalNotificationServiceExtension.framework', ':remove') # Run the function on the target with the framework name
end
end
project.save() # Don't forget to save the project, or the changes won't stay
end
after that a flutter clean was necessary and afterwards the flutter build works like a charm. Hopefully in the future this will save someone 6 hours of time.