Android is normal, IOS has problems

When using plug-ins, IOS has some problems:

`
/Users/furun/.pub-cache/hosted/pub.dartlang.org/contacts_plugin-0.0.3/ios/Classes/model/Address.swift:17:16: error: use of undeclared type 'AddressType'
var type : AddressType = AddressType.other
^~~~~~~~~~~
/Users/furun/.pub-cache/hosted/pub.dartlang.org/contacts_plugin-0.0.3/ios/Classes/model/Address.swift:10:7: error: type 'Address' does not conform to protocol 'Decodable'
class Address : Codable {
^
Swift.Decodable:2:5: note: protocol requires initializer 'init(from:)' with type 'Decodable'
init(from decoder: Decoder) throws
^`