use fine location with no maximum age

js/apis/PositionApi.js

@@ -1,28 +1,51 @@
 // @flow
 import { emitter } from '../streams/LocationStream';
 import { getCoordsFromZip } from './GoogleMapsApi';
-import { AsyncStorage } from 'react-native';
+import { AsyncStorage, PermissionsAndroid, Platform } from 'react-native';
+
+const {
+	PERMISSIONS: { ACCESS_FINE_LOCATION },
+	RESULTS,
+	request: requestPermission,
+} = PermissionsAndroid;
+
+let locationPermissionResponse = false;
+
+const askLocationPermission = async () => {
+	if (Platform.OS === 'ios') {
+		locationPermissionResponse = RESULTS.GRANTED;
+	} else if (locationPermissionResponse !== RESULTS.GRANTED) {
+		locationPermissionResponse = await requestPermission(ACCESS_FINE_LOCATION, {
+			title: 'Aretherecookies? Location Permission',
+			message: 'Aretherecookies? would like to use your location to find some cookies. Is that OK?',
+		});
+	}
+	return locationPermissionResponse === RESULTS.GRANTED;
+};
 
 export const getCurrentPosition = () => {
 	return new Promise((resolve, reject) => {
-		navigator.geolocation.getCurrentPosition(
-			(pos: Position) => {
-				emitter(pos), resolve(pos);
-				return pos;
-			},
-			err => {
-				reject(err);
-			},
-			{
-				enableHighAccuracy: true,
-				timeout: 2000,
-				maximumAge: 1000,
+		askLocationPermission().then(granted => {
+			if (!granted) {
+				return reject('Permission was not given for location');
 			}
-		);
+			navigator.geolocation.getCurrentPosition(
+				(pos: Position) => {
+					emitter(pos), resolve(pos);
+					return pos;
+				},
+				err => {
+					reject(err);
+				},
+				{
+					enableHighAccuracy: true,
+					timeout: 5000,
+				}
+			);
+		});
 	});
 };
 
-// TODO actually implement geolocation for zipcode into lat/lng
 export const getPositionFromZip = async (zip: string) => {
 	const { lat: latitude, lng: longitude } = await getCoordsFromZip(zip);