Привет, я хочу нарисовать стрелку на каждой ломаной линии, как это изображение: 
прочитайте этот пост: Как нарисовать стрелку на каждом сегменте полилинии в Google Maps V3
это ответ на мой вопрос, но этот пост для javascript
но я использую его, и это мой код:
<View style={{ height: hp('50%'), width: wp('100%') }}>
<MapView
provider={PROVIDER_GOOGLE}
onLayout={this.onMapLayout}
style={styles.containerMap}
initialRegion={{
latitude: this.props.data ? this.props.data[0].YPOINT : '',
longitude: this.props.data ? this.props.data[0].XPOINT : '',
latitudeDelta: 0.0922,
longitudeDelta: 0.0421,
}} >
{this.state.isMapReady && <Polyline
strokeWidth={2}
strokeColor="red"
geodesic={true}
icons={
icon = { path: google.maps.SymbolPath.FORWARD_CLOSED_ARROW },
offset = '100%'
}
coordinates={[...this.props.data.map((value, index) => {
return { latitude: value.YPOINT, longitude: value.XPOINT }
})]}
/>
}
</MapView>
</View>
но при запуске я получаю сообщение об ошибке "Google не определен'.
ОБНОВЛЕНИЕ это функция:
import React, { Component } from 'react'
import { Text, View, StyleSheet, ScrollView, AsyncStorage, ActivityIndicator, Alert, FlatList } from 'react-native'
import { widthPercentageToDP as wp, heightPercentageToDP as hp } from 'react-native-responsive-screen';
//import arrowIcon from '../../../assets/images/icon/Arrow/090.ico'
import SegmentedControlTab from "react-native-segmented-control-tab";
import { Dropdown } from 'react-native-material-dropdown';
import { getTraceOfHardware } from '../../../Store/actions';
import { connect } from 'react-redux';
import MapView, { Marker, PROVIDER_GOOGLE, Polyline } from 'react-native-maps';
import Icon from 'react-native-vector-icons/Entypo';
var moment = require('jalali-moment');
let dataDay = [{
value: 'امروز',
}, {
value: 'یک روز پیش',
}, {
value: 'دو روز پیش',
}, {
value: 'سه روز پیش',
}, {
value: 'چهار روز پیش',
}, {
value: 'پنج روز پیش',
}, {
value: 'شش روز پیش',
}, {
value: 'هفت روز پیش',
},];
const airplin = <Icon name="aircraft" size={30}/>
class mainRoutsReport extends Component {
constructor () {
super()
this.state = {
selectedIndex: 0,
selectedIndices: [0],
customStyleIndex: 0,
daySelected: '',
isMapReady: false,
tableHead: ['Head', 'Head2', 'Head3', 'Head4', 'Head5', 'Head6', 'Head7', 'Head8', 'Head9'],
widthArr: [40, 60, 80, 100, 120, 140, 160, 180, 200],
data: [],
latlon: []
// tableData: [
// ['1', '2', '3', '4', '5', '6'],
// ['1', '2', '3', '4', '5', '6']
// ]
}
}
//GET UDID
_retrieveUDID = async () => {
try {
return await AsyncStorage.getItem('@IranTracking:UDID', (error, result) => { return result })
} catch (error) {
// Error retrieving data
console.log(error)
}
};
//GET TOKEN
_retrieveToken = async () => {
try {
return await AsyncStorage.getItem('@IranTracking:Token', (error, result) => { return result })
} catch (error) {
// Error retrieving data
console.log(error)
}
};
//This method creat XML to send action.js to get List of Hardware from SOAP
async _makXML(value, index) {
udid = await this._retrieveUDID()
token = await this._retrieveToken()
var yesterday = moment().locale('fa').subtract(index + 0, 'day').format('YYYY-MM-DD')
// console.log(yesterday)
let xml = `<?xml version="1.0" encoding="utf-8"?>\
<x:Envelope xmlns:x="http://schemas.xmlsoap.org/soap/envelope/" xmlns:tra="http://Trackinguri.org/">\
<x:Header>\
<tra:SOAPHeaderContent>\
<tra:UserName></tra:UserName>\
<tra:Password></tra:Password>\
<tra:Token>${token}</tra:Token>\
<tra:UID>${udid}</tra:UID>\
</tra:SOAPHeaderContent>\
</x:Header>\
<x:Body>\
<tra:GetTraceByHardwareID>\
<tra:HardwareID>${this.props.navigation.state.params.HID}</tra:HardwareID>\
<tra:FromDate>${yesterday} 00:00:00</tra:FromDate>\
<tra:ToDate>${yesterday} 23:59:59</tra:ToDate>\
<tra:HijriDates>true</tra:HijriDates>\
<tra:Time_Zone>Tehran</tra:Time_Zone>\
<tra:Lang>fa</tra:Lang>\
</tra:GetTraceByHardwareID>\
</x:Body>\
</x:Envelope>`;
console.log(" xml to get Tarce reports " + xml)
this.props.getTraceOfHardware(xml)
}
componentWillMount() {
this._makXML()
this.props.getTraceOfHardware()
}
componentDidMount() {
}
//this function use for day
_HandelDay(value, index) {
// var yesterday = moment().locale('fa').subtract(index,'day').format('YYYY-MM-DD')
//console.log('index of drop down is : ' + value + ' \nindex is : '+ index + '\n and date is : ' + yesterday)
//Alert.alert(yesterday)
}
handleMultipleIndexSelect = (index: number) => {
const { selectedIndices } = this.state
if (selectedIndices.includes(index)) {
this.setState(prevState => ({
...prevState,
selectedIndices: selectedIndices.filter((i) => i !== index),
}))
} else {
this.setState(prevState => ({
...prevState,
selectedIndices: [
...selectedIndices,
index,
],
}))
}
}
handleCustomIndexSelect = (index: number) => {
this.setState(prevState => ({ ...prevState, customStyleIndex: index }))
}
onMapLayout = () => {
this.setState({ isMapReady: true });
}
_renderItem = ({ item, index }) => (
// console.log(item)
<View style={{ flex: 1, height: hp('15%'), flexDirection: 'row', backgroundColor: index % 2 ? '#f3f3f3' : '#dedede', marginHorizontal: 5, alignItems: 'center' }} >
<View style={{ width: wp('15%'), alignItems: 'center', }}>
<Text style={{ marginLeft: 4, fontFamily: 'IRANSansMobile', }}>{item.TRUCKSTATE}</Text>
</View>
<View style={{ width: wp('12%'), alignItems: 'center' }}>
<Text style={{ marginLeft: 4, fontFamily: 'IRANSansMobile', }}>{item.SPEED}</Text>
</View>
<View style={{ width: wp('50%'), alignItems: 'center' }}>
<Text style={{ marginLeft: 4, fontFamily: 'IRANSansMobile', }}>{item.POSDESCRIPTION}</Text>
</View>
<View style={{ width: wp('10%'), alignItems: 'center' }}>
<Text style={{ marginLeft: 4, fontFamily: 'IRANSansMobile', }}>{item.SENTDATE}</Text>
</View>
<View style={{ width: wp('10%'), alignItems: 'center' }}>
<Text style={{ marginLeft: 4, fontFamily: 'IRANSansMobile', }}>{index + 1}</Text>
</View>
</View>
);
_renderHeadr = () => (
<View style={{ flexDirection: 'row', alignContent: 'space-between', alignItems: 'center', backgroundColor: '#5e9dcb' }}>
<View style={{ borderWidth: 0.5, width: wp('15%'), alignItems: 'center', borderTopLeftRadius: 5 }}>
<Text style={{ fontSize: 15, fontFamily: 'IRANSansMobile', }}>وضعیت</Text>
</View>
<View style={{ borderWidth: 0.5, width: wp('12%'), alignItems: 'center' }}>
<Text style={{ fontSize: 15, fontFamily: 'IRANSansMobile', }}>سرعت</Text>
</View>
<View style={{ borderWidth: 0.5, width: wp('50%'), alignItems: 'center' }}>
<Text style={{ fontSize: 15, fontFamily: 'IRANSansMobile', }}>موقعیت</Text>
</View>
<View style={{ borderWidth: 0.5, width: wp('10%'), alignItems: 'center' }}>
<Text style={{ fontSize: 15, fontFamily: 'IRANSansMobile', }}>زمان</Text>
</View>
<View style={{ borderWidth: 0.5, width: wp('10%'), alignItems: 'center', borderTopRightRadius: 5 }}>
<Text style={{ fontSize: 15, fontFamily: 'IRANSansMobile', }}>ردیف</Text>
</View>
</View>
);
render() {
const { customStyleIndex } = this.state
//console.log(this.props.navigation.state.params.HID)
//console.log(this.props.data)
return (
<View style={{ width: wp('100%'), height: hp('100%') }}>
<Dropdown animationDuration={100}
dropdownMargins={{ min: 0, max: 0 }}
dropdownOffset={{ top: 0, left: 0 }}
style={{ textAlign: 'center' }}
containerStyle={{ textAlign: 'right', backgroundColor: '#fcee97', borderWidth: 0.5, borderRadius: 13, margin: 8 }}
absoluteRTLLayout={true}
data={dataDay}
dropdownPosition={-5}
onChangeText={(value, index) => this._makXML(value, index)}
value={dataDay[0].value} />
<SegmentedControlTab
values={['نمایش متنی', 'نمایش نقشه']}
selectedIndex={customStyleIndex}
onTabPress={this.handleCustomIndexSelect}
borderRadius={0}
tabsContainerStyle={{ height: 50, backgroundColor: '#F2F2F2' }}
tabStyle={{ backgroundColor: '#ffffff', borderWidth: 0, borderColor: 'transparent' }}
activeTabStyle={{ backgroundColor: '#5e9dcb', marginTop: 2 }}
tabTextStyle={{ color: '#000000', fontWeight: 'bold', fontFamily: 'IRANSansMobile' }}
activeTabTextStyle={{ color: '#ffffff', fontFamily: 'IRANSansMobile' }}
/>
{//table
customStyleIndex === 0
&&
<View style={{ paddingBottom: wp('20%') }}>
{this.props.isLoading ? <ActivityIndicator /> : <FlatList
ListHeaderComponent={this._renderHeadr}
stickyHeaderIndices={[0]}
data={this.props.data}
renderItem={this._renderItem}//({item})=>(this._renderItem)
keyExtractor={(item, index) => index.toString()}
/>}
</View>
}
{//Map
customStyleIndex === 1
&&
<View style={{ height: hp('50%'), width: wp('100%') }}>
<MapView
provider={PROVIDER_GOOGLE}
onLayout={this.onMapLayout}
style={styles.containerMap}
initialRegion={{
latitude: this.props.data ? this.props.data[0].YPOINT : '',
longitude: this.props.data ? this.props.data[0].XPOINT : '',
latitudeDelta: 0.0922,
longitudeDelta: 0.0421,
}} >
{this.state.isMapReady &&
<Polyline
strokeWidth={2}
strokeColor="red"
geodesic={true}
icons={
icon = {airplin },
offset = '100%'
}
coordinates={[...this.props.data.map((value, index) => {
return { latitude: value.YPOINT, longitude: value.XPOINT }
})]}
/>
}
</MapView>
</View>
}
</View>
)
}
}
function mapStateToProps(state) {
console.log(state)
return {
data: state.GetTraceHardware.data,
isLoading: state.GetTraceHardware.isLoading,
error: state.GetTraceHardware.error
}
}
function mapDispatchToProps(dispatch) {
return {
getTraceOfHardware: (data) => dispatch(getTraceOfHardware(data))
}
}
export default connect(mapStateToProps, mapDispatchToProps)(mainRoutsReport);