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YourLocations persist refactor

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This commit is contained in:
vjrj 2018-06-30 08:17:45 +02:00
parent a9329e3824
commit b22df7a8e2
2 changed files with 18 additions and 30 deletions
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33
lib/models/yourLocationPersist.dart
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@ -2,37 +2,20 @@ import 'dart:async';
import 'dart:convert';
import 'package:fires_flutter/models/yourLocation.dart';
import 'package:shared_preferences/shared_preferences.dart';
import '../globals.dart' as globals;
final String locationKey = 'yourlocations';
Future<List<YourLocation>> loadYourLocations() async {
return await globals.prefs.then((prefs) {
return loadYourLocationsWithPrefs(prefs);
});
}
persistYourLocations(List<YourLocation> yl) {
globals.prefs.then((prefs) {
List<String> yourLocationsAsString = [];
yl.forEach((location) {
yourLocationsAsString.add(json.encode(location.toJson()));
});
prefs.setStringList(locationKey, yourLocationsAsString);
});
}
Future<List<YourLocation>> loadYourLocationsWithPrefs(
SharedPreferences prefs) async {
return await globals.prefs.then((prefs) {
List<String> yourLocations = prefs.getStringList(locationKey);
List<YourLocation> persistedList = List<YourLocation>();
if (yourLocations == null) {
yourLocations = [];
persistYourLocations(<YourLocation>[]);
// first run, init with empty list
persistYourLocations(persistedList);
}
List<YourLocation> persistedList = List<YourLocation>();
yourLocations.forEach((locationString) {
Map locationMap = json.decode(locationString);
persistedList.add(YourLocation.fromJson(locationMap));
@ -40,3 +23,13 @@ Future<List<YourLocation>> loadYourLocationsWithPrefs(
return persistedList;
});
}
persistYourLocations(List<YourLocation> yl) {
globals.prefs.then((prefs) {
List<String> ylAsString = [];
yl.forEach((location) {
ylAsString.add(json.encode(location.toJson()));
});
prefs.setStringList(locationKey, ylAsString);
});
}