FlutterEngine

flutterEngine

@end

The implementation should delegate mostly to a
FlutterPluginAppLifeCycleDelegate:

@interface

AppDelegate

()

@property

nonatomic

strong

FlutterPluginAppLifeCycleDelegate

lifeCycleDelegate

@end

@implementation

AppDelegate

instancetype

init

if

self

super

init

])

_lifeCycleDelegate

[[

FlutterPluginAppLifeCycleDelegate

alloc

init

];

return

self

BOOL

application

:(