Flutter出现List<dynamic> is not a subtype of type List<String>解决方法 2020-11-26 Flutter出现List is not a subtype of type List解决方法type ‘List‘ is not a subtype of type ‘List‘需要在解析’List‘字段时加上cast() 123List<String> newURl = urls.map((e){ return e.url;}).toList().cast<String>(); flutter-gradle-task-assembledebug-failed openssl post APNS error verify error:num=10:certificate has expired