ReactNative调用iOS方法

https://blog.csdn.net/zww1984774346/article/details/71167775
方法一：
带.h

.h
#import <Foundation/Foundation.h>
#import <React/RCTBridge.h>
@interface RNOrderiOS : NSObject<RCTBridgeModule>

@end
.m
#import "RNOrderiOS.h"
@implementation RNOrderiOS
RCT_EXPORT_MODULE();
RCT_EXPORT_METHOD(doSomething:(NSString *)testStr){
    NSLog(@"----%@----",testStr);
}
@end

原生模块：

一个.m
#import <Foundation/Foundation.h>
#import <React/RCTBridge.h>

@interface RedirectModule : NSObject<RCTBridgeModule>

@end

@implementation RedirectModule

RCT_EXPORT_MODULE();
RCT_EXPORT_METHOD(startActivityFromJS:(NSString *)str1 ReceiveStr:(NSString *)str2){
  NSLog(@"----%@---%@-",str1,str2);
}

@end

RN模块：

//引入原生类
const RouteMapViewManager = require('react-native').NativeModules.RedirectModule;

//调用
startAndStop(type) {
        RouteMapViewManager. startActivityFromJS('22','222') 
    }

2.
NativeModules.RedirectModule.startActivityFromJS('2222','222')

方法二：
原生模块：

@implementation RouteMapViewManager

RCT_EXPORT_MODULE()
RCT_EXPORT_METHOD(startAndStop:(nonnull NSNumber *)reactTag type:(NSString *)type) {
//前半部固定写法
   NSLog(@"------------2323423--%@----------",type);
}
@end

RN模块：

//引入原生控件
let RCTRouteMapView = requireNativeComponent('RouteMapView', RouteMapView);

class RouteMapView extends Component {

//显示原生控件
    render() {
        return <RCTRouteMapView ref="gaodeMap" {...this.props}/>
    }

/**
     * RN向原生控件发送消息
     * @param name
     * @param args
     * @returns {*}
     */
    runCommand(name, args = []) {
        return Platform.select({
            android: () => UIManager.dispatchViewManagerCommand(
                this.getHandle(),
                UIManager.RouteMapView.Commands[name],
                args
            ),
            // ios: () => LottieViewManager[name](this.getHandle(), ...args),
            ios: () => UIManager.dispatchViewManagerCommand(
                this.getHandle(),
                UIManager.RouteMapView.Commands[name],
                args
            )
        })();
    }

   getHandle() {
        return findNodeHandle(this.refs.gaodeMap);
    }

    startAndStop(type) {
//ios 需加标识 ‘startAndStop’，传的需以数组形式传 [type]
        Platform.OS === 'ios' ? this.runCommand('startAndStop',[type]) : this.runCommand(type);
    }

带有回调

//回调
//RCTResponseSenderBlock
//RCTResponseSenderBlock只接受一个参数,为数组，把需要回调的参数加入到数组中，回调回去
RCT_EXPORT_METHOD(calliOSActionWithCallBack:(RCTResponseSenderBlock)callBlock){
  NSString *string=@"hello";

  NSArray *array=@[@"RN",@"and",@"iOS"];

  NSString *end=@"goodbay";

  //更多参数放到数组中进行回调
  callBlock(@[string,array,end]);
}

RN
. calliOSActionWithCallBack((string,array,end) => {
})

小结：之前比较坑的是 使用dispatchViewManagerCommand方法时 怎么都报错，报传的args里多个3，0，数组越界...找不到原因，在别的工程里写就可以了...