react-native mapbox is not showing user location and annotation

问题

I am currently learning react-native with maps using mapbox https://github.com/mapbox/react-native-mapbox-gl I followed everything that the map shows, if I give it a lon and lat it does show a location on my emulator but the problem is the annotation and show user location doesn't show at all.

Does anyone have any idea what I might be missing? I have been rebuilding the app a few times and checked debugging that there is no errors though

here is my simple code

export default class App extends Component { data = [ { id: '' } ];

render() {
  return (
    <View style={styles.container}>
      <Mapbox.MapView
        showUserLocation={true}
        styleURL={Mapbox.StyleURL.Street}
        zoomLevel={16}
        centerCoordinate={[-123.1118716, 49.2847564]}
        style={styles.container}>
      </Mapbox.MapView>
      <Mapbox.PointAnnotation
        id='1'
        title='nooooooooooooooooooooo'
        coordinate={[-123.1118716, 49.2847560]}
      >
      </Mapbox.PointAnnotation>
    </View>
  );
}

}

回答1:

Ran into the same issue, on Android >=23 you have to ask for permissions first

import { PermissionsAndroid } from 'react-native';
...
componentDidMount() {
{
 PermissionsAndroid.requestMultiple(
            [PermissionsAndroid.PERMISSIONS.ACCESS_FINE_LOCATION,
            PermissionsAndroid.PERMISSIONS.ACCESS_COARSE_LOCATION],
            {
                title: 'Give Location Permission',
            message: 'App needs location permission to find your position.'
        }
    ).then(granted => {
        console.log(granted);
        resolve();
    }).catch(err => {
        console.warn(err);
        reject(err);
    });
}

来源：https://stackoverflow.com/questions/50195118/react-native-mapbox-is-not-showing-user-location-and-annotation