ReactEventEmit.h
#import <React/RCTEventEmitter.h>
#import <React/RCTBridgeModule.h>
@interface ReactEventEmit : RCTEventEmitter<RCTBridgeModule>
-(void)goToCashier:(NSString*) result;
@end
ReactEventEmit.m
#import "ReactEventEmit.h"
@implementation ReactEventEmit
@synthesize bridge = _bridge;
RCT_EXPORT_MODULE(ReactEventEmit);
+ (id)allocWithZone:(NSZone*)zone {
staticReactEventEmit*sharedInstance =nil;
staticdispatch_once_tonceToken;
dispatch_once(&onceToken, ^{
sharedInstance = [superallocWithZone:zone];
});
returnsharedInstance;
}
-(NSArray *)supportedEvents{
return @[@"goToCashier"];
}
-(void)goToCashier:(NSString*) result
{
NSLog(@"======== cashierSuccess ========== %@",result);
[self sendEventWithName:@"goToCashier" body:@{@"result": result}];
}
@end
RN的module初始化是由RN内部实现的，所以我们调用这个实例的时候，必须是这样子：
ReactEventEmit *emit = [ReactEventEmit allocWithZone:nil];
[emit goToCashier:@"fail"];
JS端调用：
const ReactEventEmit = NativeModules.ReactEventEmit;
const myReactEventEmit = new NativeEventEmitter(ReactEventEmit);
this.listener = myReactEventEmit.addListener('goToCashier', (data: { result: string }) => {
console.warn('====== cashierSuccess ======= ' + JSON.stringify(data));
this.process(data.result);
});
