stub 2.0.8

Ejectable/App.tsx

@@ -20,12 +20,15 @@ export function setAdvised() : void    { advised = true; }
 export default function App() {
   const isLoadingComplete = useCachedResources();
   const colorScheme = useColorScheme();
+
   const [isKM, setIsKM] = useState(false);
   const toggleUnits = () => setIsKM(previousState => !previousState);
-  const [location, setLocation] = useState(Object);
-  const [errorMsg, setErrorMsg] = useState("");
+  
+  
+   const [location, setLocation] = useState(Object);
+   const [errorMsg, setErrorMsg] = useState("");
 
-  useEffect(() => {
+   useEffect(() => {
     (async () => {
       let { status } = await Location.requestForegroundPermissionsAsync();
       if (status !== 'granted') {
@@ -41,15 +44,15 @@ export default function App() {
       Trips.deltaLoc(location);
       }
     })();
-  }, []);
+   }, []);
 
-  expoGeoState = 'Waiting..';
-  if (errorMsg) {
+   expoGeoState = 'Waiting..';
+   if (errorMsg) {
     expoGeoState = errorMsg;
-  } else if (location) { 
+   } else if (location) { 
     expoGeoState = JSON.stringify(location);
-  }
-
+   }
+  
 
   if (!isLoadingComplete) {
     return null;

Ejectable/GT2.tsx

@@ -4,11 +4,11 @@ import { Text, View } from './components/Themed';
 import { StyleSheet } from 'react-native';
 import * as geolib from 'geolib';
 
-export const ver:string         = "2.0.7"
+export const ver:string         = "2.0.8"
        var   debug:number       = 0;
        var   endIsNigh:boolean  = false;
        var   testCount          = 0;
-       var   bgEnabled:boolean  = false;
+export var   bgOps:boolean      = false;
        var   expoGeoState:any   = null;
 export var   locEnabled:boolean = false;
 
@@ -20,7 +20,8 @@ export var   locEnabled:boolean = false;
        const minExpoAccuracy:number  = 5;
 
 export function getEndIsLast() : boolean       { return endIsNigh;  }  
-export function setEndIsLast(value:boolean)    { endIsNigh = value;  }       
+export function setBgOps(value:boolean)        { bgOps = value;  } 
+export function setEndIsLast(value:boolean)    { endIsNigh = value;  }
 
 const styles = StyleSheet.create({
     tripText: {
@@ -133,7 +134,7 @@ class Trip {
                    }       
 
     public start()   { this.interval = setInterval(() => this.tick(), heartbeat);
-                       if (!bgEnabled) startTracking(this);
+                       if (!bgOps) startTracking(this);
     }
 
     public resume()  { this.lastFix.mLatitude = 0.0;
@@ -143,7 +144,7 @@ class Trip {
     public stop()    { Trips.distance += this.ds;
                        this.ds = 0.0;
                        clearInterval(this.interval); 
-                       if (!bgEnabled) stopTracking(this);              
+                       if (!bgOps) stopTracking(this);              
                      }
 
 }

Ejectable/app.json

@@ -2,7 +2,7 @@
   "expo": {
     "name": "GT2 Green Travel Carbon App",
     "slug": "GT2standalone",
-    "version": "2.0.7",
+    "version": "2.0.8",
     "orientation": "default",
     "description": "Travel Carbon Footprint (simplified version)",
     "icon": "./assets/images/icon.png",
@@ -22,7 +22,7 @@
     "ios": {
       "supportsTablet": true,
       "bundleIdentifier": "app.greentravel.gt2",
-      "buildNumber": "3",
+      "buildNumber": "4",
       "infoPlist": {
         "UIBackgroundModes": [
           "location",

Ejectable/components/ScreenInfo.tsx

@@ -2,7 +2,8 @@ import React from 'react';
 import { StyleSheet, TouchableOpacity } from 'react-native';
 import { Text, View } from './Themed';
 import * as Device from 'expo-device';
-import { ver } from '../GT2';
+import { bgOps, ver } from '../GT2';
+import PermissionsButton from '../BGEO';
 
 export default function ScreenInfo() {
   return (
@@ -55,6 +56,7 @@ export function ScreenInfo5() {
 }
 
 export function ScreenInfo3() {
+  if (bgOps)
   return (
     <View style={styles.splashContainer}>
         <Text
@@ -77,6 +79,30 @@ export function ScreenInfo3() {
         </Text>  
     </View>
   );
+  else
+  return (
+    <View style={styles.splashContainer}>
+        <Text
+          style={styles.titleText}
+          lightColor="rgba(0,0,0,0.8)"
+          darkColor="rgba(255,255,255,0.8)">
+          {'Green Travel Calculator v. ' + ver }
+        </Text>  
+        <Text
+          style={styles.versionText}
+          lightColor="rgba(0,0,0,0.8)"
+          darkColor="rgba(255,255,255,0.8)">
+          expo {Device.osName == 'iOS' ? 'iOS ' : 'android '} version
+        </Text>  
+        <PermissionsButton />
+        <Text
+          style={styles.cautionText}
+          lightColor="rgba(0,0,0,0.8)"
+          darkColor="rgba(255,255,255,0.8)">
+          {'\nNote: accuracy depends on sensitivity setting, your device, and carrier.'}
+        </Text>  
+    </View>
+  );
 }
 
 const styles = StyleSheet.create({

Ejectable/screens/TripScreen.tsx

@@ -1,11 +1,11 @@
 import * as React from 'react';
 import { useState } from 'react';
-import { Alert, BackHandler, Button, StyleSheet } from 'react-native';
+import { Alert, Button, StyleSheet } from 'react-native';
 import { Text, View } from '../components/Themed';
 import { ScreenInfo2 } from '../components/ScreenInfo';
-import { ver, locEnabled, TripDisplay, LastTrip, Trips, setEndIsLast } from '../GT2';
+import { bgOps, TripDisplay, LastTrip, Trips, setEndIsLast } from '../GT2';
 import { RootTabScreenProps } from '../types';
-import { getAdvised, setAdvised } from './ModalScreen';
+import * as Device from 'expo-device';
 
 var debug:number    =  0;
 
@@ -32,11 +32,12 @@ const styles = StyleSheet.create({
 });
 
 
-function startTrip() {
+function startTrip() { 
 
-  if (!locEnabled) {
-    Alert.alert("Location services unavailable can't start trip.");
-    return;
+  if (!bgOps) {
+    if (Device.osName === 'iOS')
+         Alert.alert("Background location not enabled. Must be in foreground and awake during trip!");
+    else Alert.alert('Stay in foreground, awake during trip!');    
   } 
 
   Trips.start();
@@ -71,10 +72,6 @@ export default function TripScreen( { navigation }: RootTabScreenProps<'Trip'>)
        <Button
         title={sButtonText}
         onPress={() => {
-          if (!getAdvised()) {
-            Alert.alert("Note: " + ver + " doesn't run while in background or sleeping.");
-            setAdvised();
-          }
           if (!Trips.inProgress) {startTrip();
                                   if (Trips.inProgress) { setSButtonText("End"); setPButtonText('Pause');}}
           else                   {setSButtonText('Start'); LastTrip.from(Trips);  endTrip(); navigation.push('Modal'); }}
@@ -101,10 +98,6 @@ export default function TripScreen( { navigation }: RootTabScreenProps<'Trip'>)
        <Button
         title={sButtonText}
         onPress={() => {
-          if (!getAdvised()) {
-            Alert.alert("Note: GT2" + ver + " doesn't run while in background or sleeping.");
-            setAdvised();
-          }
           if (!Trips.inProgress) {startTrip();
                                   if (Trips.inProgress) { setSButtonText("End"); setPButtonText('Pause');}}
           else                   {setSButtonText('Start'); endTrip(); LastTrip.from(Trips); navigation.push('Modal'); }}

Ejectable/tsconfig.json

@@ -1,4 +1,4 @@
-{ 
+{   
    "extends": "expo/tsconfig.base",
    "compilerOptions": {
     "suppressImplicitAnyIndexErrors": true,