Reactnative-iOS回调Javascript的方法
Reactnative可以调用原生模块,原生模块也可以给JavaScript发送事件通知.最好的方法是继承RCTEventEmitter.自定义继承自PushEventEmitter的子类RCTEventEmitter.
#import#import #import @interfacePushEventEmitter:RCTEventEmitter -(void)addEventReminderReceived:(NSNotification*)notification; @end
实现supportedEvents方法
#import"PushEventEmitter.h" @implementationPushEventEmitter +(id)allocWithZone:(NSZone*)zone{ staticPushEventEmitter*sharedInstance=nil; staticdispatch_once_tonceToken; dispatch_once(&onceToken,^{ sharedInstance=[superallocWithZone:zone]; }); returnsharedInstance; } RCT_EXPORT_MODULE(); -(NSArray*)supportedEvents { return@[@"EventReminder"]; } -(void)addEventReminderReceived:(NSNotification*)notification{ [selfsendEventWithName:@"EventReminder"body:@{@"name":@"FlyElephant"}]; } @end
Reactnative设置:
import{ NativeModules, NativeEventEmitter, }from'react-native'; constPushEventEmitter=NativeModules.PushEventEmitter; constemitterManager=newNativeEventEmitter(PushEventEmitter);
订阅通知和移除通知:
componentDidMount(){ subscription=emitterManager.addListener( 'EventReminder', (reminder)=>console.log('JavaScript接收到通知:'+reminder.name) ); } componentWillUnmount(){ subscription.remove();//移除通知 }
调用测试:
PushEventEmitter*eventEmitter=[PushEventEmitterallocWithZone:nil];
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