#import <React/RCTBridgeModule.h>
#import <React/RCTEventEmitter.h>
@interface RNGlobalManager : RCTEventEmitter <RCTBridgeModule>
- (void)sendEvent:(NSString *)eventName;
@end
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#import "RNGlobalManager.h"
#import <React/RCTLog.h>
@implementation RNGlobalManager
{
  bool hasListeners;
}
RCT_EXPORT_MODULE();
+ (id)allocWithZone:(NSZone *)zone {
  static RNGlobalManager *sharedInstance = nil;
  static dispatch_once_t onceToken;
  dispatch_once(&onceToken, ^{
    sharedInstance = [super allocWithZone:zone];
  });
  return sharedInstance;
}
- (NSArray<NSString *> *)supportedEvents
{
  return @[@"appCrashed", @"startObserving"];
}
-(void)startObserving {
  NSLog(@"RNGlobalManager startObserving");
  hasListeners = YES;
  [self sendEventWithName:@"startObserving"  body:@{@"name": @"startObserving"}];
}
-(void)stopObserving {
  NSLog(@"RNGlobalManager stopObserving");
  hasListeners = NO;
}
- (void)sendEvent:(NSString *)eventName {
   NSLog(@"RNGlobalManager sendGlobalEvent emitting event: %@", eventName);
  if (hasListeners) { 
    NSLog(@"RNGlobalManager hasListeners");
    [self sendEventWithName:@"appCrashed"  body:@{@"name": eventName}];
  }
}
@end
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+ #import "RNGlobalManager.h"
@implementation AppDelegate
+ RNGlobalManager *globalManager = NULL;
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  RCTAppSetupPrepareApp(application);
  RCTBridge *bridge = [[RCTBridge alloc] initWithDelegate:self launchOptions:launchOptions];
+ globalManager = [RNGlobalManager allocWithZone: nil];
    ...
    return YES;
}
// 添加如下代码：
- (void)applicationWillTerminate:(UIApplication *)application {
    NSLog(@"========app killed==============");
    [globalManager sendEvent:@"appCrashed"];
}
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import { NativeModules, NativeEventEmitter } from "react-native";
const NativeEmitter = new NativeEventEmitter(NativeModules.RNGlobalManager)
  useEffect(() => {
    initTheme();
    console.log('___________________________')
    NativeEmitter.addListener("appCrashed", (reminder) => {
      console.log('reminder______________', reminder) // 打印信息1
      onDisplayNotification1()
    })
    NativeEmitter.addListener("startObserving", (reminder) => {
      console.log('reminder_____startObserving_________', reminder)  // 打印信息2
      onDisplayNotification2()
    })
    // return () => {
    //   console.log('sss')
    //   // subscription.remove();
    // }
  }, []);
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