GeoLocation within 'redux-saga'-context.

This library helps along to fetch geo-location within a saga (or any other generator function) and put the result into the redux-store.

yarn add redux-saga-location @react-native-community/geolocation

or

npm install redux-saga-location @react-native-community/geolocation --save

In the root reducer add the location-reducer. For instance:

reducer.js:

import { locationReducer as location } from "redux-saga-location";

const appReducer = combineReducers({
  appStates,
  routes,
  ...location
});

In the root saga spawn the channel watcher:

saga.js

import {
  watchLocationChannel,
  getCurrentPosition,
  watchCurrentPosition
} from "redux-saga-location";

export default function* rootSaga() {
  yield [
    // ... all your sagas here
    spawn(watchLocationChannel)
  ];
}

We call getCurrentPosition according to the web-standard-method and (if user permits) the current position will be put into the redux store.

yield call(getCurrentPosition)

The received data is the same as from navigator.geolocation.getCurrentPosition. Starting with react-native 0.60 navigator.geolocation has been removed and moved to Geolocation.getCurrentPosition

We call watchCurrentPosition according to the web-standard-method and (if user permits) the position will be put into the redux store as often as it gets updated.

yield call(watchCurrentPosition)

The received data is the same as from navigator.geolocation.watchPosition. Starting with react-native 0.60 navigator.geolocation has been removed and moved to Geolocation.watchPosition

We can listen to the event in our reducers per "REDUX_SAGA_LOCATION_SET_POSITION", while errors can be detected with "REDUX_SAGA_LOCATION_SET_ERROR".

If we want to use constants for the actions, we can import them with:

import {
  REDUX_SAGA_LOCATION_ACTION_SET_POSITION,
  REDUX_SAGA_LOCATION_ACTION_SET_ERROR
} from "redux-saga-location/actions";

We'll find the result in our redux-store like this:

Contributors are welcome! Feel free to submit pull requests or open discussions.