React native 如何使用react导航&x27;s头左和头右

React native 如何使用react导航&x27;s头左和头右,react-native,React Native,使用react导航,发现headerLeft没有响应?没有头左,头右 class Message extends React.Component { static navigationOptions = { tabBarLabel: '消息', headerTitle: () => ( <View style={styles.headerWrapper}> <Text adjustsFontSize

使用react导航,发现headerLeft没有响应?没有头左,头右

class Message extends React.Component {
    static navigationOptions = {
    tabBarLabel: '消息',
    headerTitle: () => (
    <View style={styles.headerWrapper}>
        <Text
             adjustsFontSizeToFit
            style={styles.headerText}>消息</Text>
    </View>
 ),
  tabBarIcon: ({ focused, tintColor }) => (
  <Image
      source={focused ? require('../images/clickmessage.png') : 
      require('../images/message.png')}
      style={{ width: 26, height: 26, tintColor: tintColor }}
  />
),
headerLeft: ({ focused, tinColor }) => {
    <Image
        source={focused ? require('../images/clickmessage.png') : 
        require('../images/message.png')}
        style={{ width: 26, height: 26, tintColor: tintColor }}
     />
 }
 };
render() {
    return (
        <View style={styles.container}>
        <MessageContent />
    </View>
 );
}
类消息扩展了React.Component{
静态导航选项={
tabBarLabel:'消息',
标题:()=>(
消息
),
tabBarIcon:({focused,tintColor})=>(
),
headerLeft:({focused,tinColor})=>{
}
};
render(){
返回(
);
}
headerLeft和headerRight是无效的

类消息扩展React.Component{
class Message extends React.Component {
    static navigationOptions = {
    tabBarLabel: '消息',
    headerTitle: () => (
        <View style={styles.headerWrapper}>
            <Text
                 adjustsFontSizeToFit
                style={styles.headerText}>消息</Text>
        </View>
   ),
   tabBarIcon: ({ focused, tintColor }) => (
      <Image
          source={focused ? require('../images/clickmessage.png') : 
          require('../images/message.png')}
          style={{ width: 26, height: 26, tintColor: tintColor }}
      />
    ),
    headerLeft: ({ focused, tinColor }) => {
        <Image
            source={focused ? require('../images/clickmessage.png') : 
            require('../images/message.png')}
            style={{ width: 26, height: 26, tintColor: tintColor }}
         />
    }
   };
   render() {
     return (
      <View style={styles.container}>
       <MessageContent />
      </View>
    );
 }
静态导航选项={ tabBarLabel:'消息', 标题:()=>( 消息 ), tabBarIcon:({focused,tintColor})=>( ), headerLeft:({focused,tinColor})=>{ } }; render(){ 返回( ); }
}
类消息扩展了React.Component{
静态导航选项={
tabBarLabel:'消息',
标题:()=>(
消息
),
tabBarIcon:({focused,tintColor})=>(
),
headerLeft:({focused,tinColor})=>{
}
};
render(){
返回(
);
}

}

您可以像这样使用左右标题:

static navigationOptions = ({navigation}) => {
    return {
        headerTitle: (
            <View style={{flex: 1, alignSelf: 'center'}}>
                <AppFontLoader>
                    <Text style={{
                        color: '#fff',
                        alignSelf: 'center',
                        ...Platform.select({
                            ios: {
                                fontFamily: 'Some implemented font',
                            },
                            android: {
                                fontFamily: 'Another font for android',
                            }
                        }),
                    }}>Place you title here</Text>
                </AppFontLoader>
            </View>
        ),
        headerRight: (
            <TouchableOpacity onPress={() => navigation.navigate({routeName: 'PriceList'})}
                              style={{right: Platform.OS === 'ios' ? Dimensions.get("window").height < 667 ?  '10%' : '5%' : '25%', backgroundColor: 'transparent', paddingLeft: 15}}>
                <Image style={{width: 25, height: 25}} source={require('../../assets/icons/info2.png')}/>
            </TouchableOpacity>
        ),
        headerLeft: (
            <TouchableOpacity onPress={() => navigation.goBack(null)} style={{left: Dimensions.get("window").height < 667 ? '8%' : '3%', backgroundColor: 'red', width: '100%'}}>
                <Image style={{width: 30, height: 30}} source={require('../../assets/icons/back-icon-50x50.png')}/>
            </TouchableOpacity>
        ),
        headerStyle: {
            backgroundColor: '#14b6e4',
        },
        headerTintColor: '#fff',

    };
};
静态导航选项=({navigation})=>{
返回{
标题:(
把你的头衔放在这里
),
头灯:(
导航({routeName:'PriceList'})}
style={{right:Platform.OS=='ios'?Dimensions.get(“window”)。高度<667?'10%:'5%:'25%,'backgroundColor:'transparent',paddingLeft:15}>
),
左校长:(
navigation.goBack(null)}style={{left:Dimensions.get(“window”)。高度<667?'8%:'3%',背景色:'red',宽度:'100%}>
),
头型:{
背景颜色:“#14b6e4”,
},
标题颜色:“#fff”,
};
};

您可以像这样使用左右标题:

static navigationOptions = ({navigation}) => {
    return {
        headerTitle: (
            <View style={{flex: 1, alignSelf: 'center'}}>
                <AppFontLoader>
                    <Text style={{
                        color: '#fff',
                        alignSelf: 'center',
                        ...Platform.select({
                            ios: {
                                fontFamily: 'Some implemented font',
                            },
                            android: {
                                fontFamily: 'Another font for android',
                            }
                        }),
                    }}>Place you title here</Text>
                </AppFontLoader>
            </View>
        ),
        headerRight: (
            <TouchableOpacity onPress={() => navigation.navigate({routeName: 'PriceList'})}
                              style={{right: Platform.OS === 'ios' ? Dimensions.get("window").height < 667 ?  '10%' : '5%' : '25%', backgroundColor: 'transparent', paddingLeft: 15}}>
                <Image style={{width: 25, height: 25}} source={require('../../assets/icons/info2.png')}/>
            </TouchableOpacity>
        ),
        headerLeft: (
            <TouchableOpacity onPress={() => navigation.goBack(null)} style={{left: Dimensions.get("window").height < 667 ? '8%' : '3%', backgroundColor: 'red', width: '100%'}}>
                <Image style={{width: 30, height: 30}} source={require('../../assets/icons/back-icon-50x50.png')}/>
            </TouchableOpacity>
        ),
        headerStyle: {
            backgroundColor: '#14b6e4',
        },
        headerTintColor: '#fff',

    };
};
静态导航选项=({navigation})=>{
返回{
标题:(
把你的头衔放在这里
),
头灯:(
导航({routeName:'PriceList'})}
style={{right:Platform.OS=='ios'?Dimensions.get(“window”)。高度<667?'10%:'5%:'25%,'backgroundColor:'transparent',paddingLeft:15}>
),
左校长:(
navigation.goBack(null)}style={{left:Dimensions.get(“window”)。高度<667?'8%:'3%',背景色:'red',宽度:'100%}>
),
头型:{
背景颜色:“#14b6e4”,
},
标题颜色:“#fff”,
};
};

你到底想做什么?你能给我们看看你试过的代码吗?什么不起作用?你到底想做什么?你能给我们看看你试过的代码吗?到底什么不起作用?请尝试删除此属性并以另一种方式操作({focused,tinColor})=>尝试删除此属性并以另一种方式操作({focused,tinColor})=>