RN-iOS 原生向RN发送消息….

#import <React/RCTBridgeModule.h&gt;
#import <React/RCTEventEmitter.h&gt;
#import <React/RCTBridge.h&gt;


@interface NatPushManager :  RCTEventEmitter <RCTBridgeModule&gt;
@end

NatPushMana ger.m

#import "NatPushManager.h"
#define NATIVE_TO_RN_ONNOFIFICATION @"onNotification"
#define NATIVE_ONNOFIFICATION @"native_onNotification"
@implementation NatPushManager{
  
}

RCT_EXPORT_MODULE();





-(NSArray*)supportedEvents {
  return@[NATIVE_TO_RN_ONNOFIFICATION];
}
- (void)nativeSendNotificationToRN:(NSNotification*)notification {
  NSLog(@"NativeToRN notification.userInfo = %@", notification.userInfo);
  dispatch_async(dispatch_get_main_queue(), ^{
    [self sendEventWithName:NATIVE_TO_RN_ONNOFIFICATION body:notification.userInfo];
  });
}
- (void)startObserving {
  [[NSNotificationCenter defaultCenter] addObserver:self
                                           selector:@selector(nativeSendNotificationToRN:)
                                               name:NATIVE_ONNOFIFICATION
                                             object:nil];
}
- (void)stopObserving {
  [[NSNotificationCenter defaultCenter]removeObserver:self name:NATIVE_ONNOFIFICATION object:nil];
}




@end

AppDelegate.m 调用

#define NATIVE_ONNOFIFICATION @"native_onNotification"

-(void)applicationWillEnterForeground:(UIApplication *)application{
  [[NSNotificationCenter defaultCenter] postNotificationName:NATIVE_ONNOFIFICATION object:nil userInfo:@{@"key": @"FG"}];
}
- (void)applicationDidEnterBackground:(UIApplication *)application{
  [[NSNotificationCenter defaultCenter] postNotificationName:NATIVE_ONNOFIFICATION object:nil userInfo:@{@"key": @"BG"}];
}

监听名:onNotification

RN端添加监听

      const {NatPushManager} = NativeModules;
      let NatPushManagerListen = new NativeEventEmitter(NatPushManager)
      NatPushManagerListen.addListener("onNotification", (res) => {
        if (res?.key === "FG") {
          start();
        }
        if (res?.key === "BG") {
          pause();
        }
      });