react-navigation之TabNavigator, StackNavigator使用配合redux

我在react-navigation的组件StackNavigator 和TabNavigator组合使用在加上redux，出现如下问题

there is no route defined for key ***must be one of

这个类似的在 react-navigation的github也有，StackNavigator里嵌套一个TabNavigator，

navreducer传递 AppNavigations就放入 <Provider>中 render 出来显示了

const AppNavigations = ({ dispatch, nav }) => {
	return <Navigator navigation={addNavigationHelpers({ dispatch, state: nav })} />
}
  
const mapStateToProps = state => ({
  nav: state.navreducer,
});

module.exports = connect(mapStateToProps)(AppNavigations);

combineReducers 里还需要配置navReducer

const allReducers = combineReducers({

	nav: navreducers,
});

那么navreducers的配置就是重点了，不注意就把TabNavigator里面的route 配置进去了

export const nav = (state, action) => {

    switch (action.type) {
         //TabNavigator 里模块
        case '****':
            return Navigator.router.getStateForAction(
                NavigationActions.navigate({ routeName: 'Tabchild' }),
                state
            );
        case '**':
        //TabNavigator 里模块
            return Navigator.router.getStateForAction(
                NavigationActions.navigate({ routeName: 'Tabchild' }),
                state
            );
        case 'WebDetail':
            return Navigator.router.getStateForAction(
                NavigationActions.navigate({ routeName: 'WebDetail' }), {...state, webViewURL: action.webViewURL }
            );
        default:
            return Navigator.router.getStateForAction(action, state) || state;

    }
}

上面做是不对的，这样做了就报出上面的错误，正确如下，因为我们在给provider 里提供的就是StackNavigator，这样就对应了

export const navreducer = (state, action) => {
    switch (action.type) {
        case 'WebDetail':
            return Navigator.router.getStateForAction(
                NavigationActions.navigate({ routeName: 'WebDetail' }), 
                {...state, webViewURL: action.webViewURL }
            );
        default:
            return Navigator.router.getStateForAction(action, state) || state;
    }
}

加上redux的好处，比如，在切换页面时就可以直接 dispatch 切换转跳页面了，不然换个同时吧参数webURl传递给下一个将要展示的页面

<TouchableOpacity onPress={()=> {
						
			this.props.navigation.dispatch({ 
				type: 'WebDetail', webViewURL: data.alt 
							});
						}}>
</TouchableOpacity>

webview 需要的参数通过state就能获取到

class WebView extends Component {
	render() {
		return <WebView source={{uri: this.props.url}}/>
	}
}


function mapStateToProps(state) {
	return {
		url: state.navreducer.webViewURL
	}
}

当然可以用其他的办法用 navigate 方法切换传递webViewURL

	<TouchableOpacity onPress={()=> {
		this.props.navigation.navigate('WebDetail', webViewURL);
						}}>
				
	</TouchableOpacity>

在 mapStateToProps输出看这样就得通过很多成了看着也觉得数据隐藏的太深了

react-navigation之TabNavigator, StackNavigator使用配合redux

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