升级xcode12.5+版本以后，项目原有MLeaksFinder库中FBRetainCycleDetector文件报错
具体为201行currentClass出现非NSCopying类型报错
if (layoutCache && currentClass) {
layoutCache[currentClass] = ivars;
}
具体修改为：
if (layoutCache && currentClass) {
layoutCache[(id<NSCopying>)currentClass] = ivars;
}
在cocoapod中文件添加以下内容
target...end中添加：
post_install do |installer|
## Fix for XCode 12.5
find_and_replace("Pods/FBRetainCycleDetector/FBRetainCycleDetector/Layout/Classes/FBClassStrongLayout.mm",
"layoutCache[currentClass] = ivars;", "layoutCache[(id<NSCopying>)currentClass] = ivars;")
end
target...end后添加：
def find_and_replace(dir, findstr, replacestr)
Dir[dir].each do |name|
text = File.read(name)
replace = text.gsub(findstr,replacestr)
if text != replace
puts "Fix: " + name
File.open(name, "w") { |file| file.puts replace }
STDOUT.flush
end
end
Dir[dir + '*/'].each(&method(:find_and_replace))
end
最后pod install重新打开工程即可...
参考FBRetainCycle官方解决方案
