reqct-native 点击导航左边三角返回指定页面

import { TouchableOpacity,Platform,BackHandler,Image } from 'react-native'


class Dome extends React.Component {

    static navigationOptions = ({navigation, screenProps}) => ({
        headerTitle: '导航',
        headerLeft:(
            <TouchableOpacity  onPress={()=>navigation.state.params.navigatePress()}  style={{padding:10}} >
               <Image
                source={require('../../../images/icon-arrow-left.png')}
                style={{ width: 9, height: 16 }}
                />
            </TouchableOpacity>
        )
    });

 _onBackAndroid=()=>{
        this.props.navigation.navigate('Home')
        return true
    }

    componentWillMount(){
        this.props.navigation.setParams({ navigatePress:this._onBackAndroid })
        if (Platform.OS === 'android') {
            BackHandler.addEventListener("hardwareBackPress", this._onBackAndroid);
        }
    }
 componentWillUnmount() {
        if (Platform.OS === 'android') {
            BackHandler.removeEventListener("hardwareBackPress", this._onBackAndroid);
        }
    }
}