So what is the simplest approach for Caching in Flutter?
The app is a simple news reader which shows WordPress posts, nothing fancy, not using a BLOC, inherited Widget, Firebase.
I want it to show the cached data(which is the latest 10 posts) even when the user is offline.
So if the user is offline show Cached data; or somehow default data is cached data.
get the firstPost[Id] from WP REST API
If the cached Json file contains Post[id] then show cached data;
Else getPosts(); and show loading indicator. also please update the local JSON file.
code to get JSON data:
// Function to fetch list of posts
Future<String> getPosts() async {
var res = await http
.get(Uri.encodeFull(apiUrl + "posts?_embed&per_page=10"), //TODO make it unlimited
headers: {"Accept": "application/json"});
setState(() {
var resBody = json.decode(res.body);
posts = resBody;
});
return "Success!";
}
the future to get posts and shows loading indicator :
body: FutureBuilder<List<String>>(
future: getPosts(),
builder: (context, snapshot) {
if (snapshot.hasError) print(snapshot.error);
return snapshot.hasData
? ListViewPosts(posts: snapshot.data)
: Center(child: CircularProgressIndicator());
},
),
dart
flutter asked Nov 24 '18 at 15:31
HooshyarHooshyar
183
add a comment |
The app is a simple news reader which shows WordPress posts, nothing fancy, not using a BLOC, inherited Widget, Firebase.
I want it to show the cached data(which is the latest 10 posts) even when the user is offline.
So if the user is offline show Cached data; or somehow default data is cached data.
get the firstPost[Id] from WP REST API
If the cached Json file contains Post[id] then show cached data;
Else getPosts(); and show loading indicator. also please update the local JSON file.
code to get JSON data:
// Function to fetch list of posts
Future<String> getPosts() async {
var res = await http
.get(Uri.encodeFull(apiUrl + "posts?_embed&per_page=10"), //TODO make it unlimited
headers: {"Accept": "application/json"});
setState(() {
var resBody = json.decode(res.body);
posts = resBody;
});
return "Success!";
}
the future to get posts and shows loading indicator :
body: FutureBuilder<List<String>>(
future: getPosts(),
builder: (context, snapshot) {
if (snapshot.hasError) print(snapshot.error);
return snapshot.hasData
? ListViewPosts(posts: snapshot.data)
: Center(child: CircularProgressIndicator());
},
),
dart
flutter asked Nov 24 '18 at 15:31
HooshyarHooshyar
183
LruMapmaybe?
– pskink
Nov 24 '18 at 19:55
I know you stated NO FIREBASE in the question, but you know that it already provides that, right? You could fetch the posts, save it in the firebase database, and offline use will be available. (tbc)
– Feu
Nov 25 '18 at 12:47
I have made this search and found some interesting packages. This one looks like it's exactly what you looking for, and this one would be maybe something more appropriate to a mobile environment if you have large objects.
– Feu
Nov 25 '18 at 12:49
add a comment |
The app is a simple news reader which shows WordPress posts, nothing fancy, not using a BLOC, inherited Widget, Firebase.
I want it to show the cached data(which is the latest 10 posts) even when the user is offline.
So if the user is offline show Cached data; or somehow default data is cached data.
get the firstPost[Id] from WP REST API
If the cached Json file contains Post[id] then show cached data;
Else getPosts(); and show loading indicator. also please update the local JSON file.
code to get JSON data:
// Function to fetch list of posts
Future<String> getPosts() async {
var res = await http
.get(Uri.encodeFull(apiUrl + "posts?_embed&per_page=10"), //TODO make it unlimited
headers: {"Accept": "application/json"});
setState(() {
var resBody = json.decode(res.body);
posts = resBody;
});
return "Success!";
}
the future to get posts and shows loading indicator :
body: FutureBuilder<List<String>>(
future: getPosts(),
builder: (context, snapshot) {
if (snapshot.hasError) print(snapshot.error);
return snapshot.hasData
? ListViewPosts(posts: snapshot.data)
: Center(child: CircularProgressIndicator());
},
),
dart
flutter asked Nov 24 '18 at 15:31
HooshyarHooshyar
183
The app is a simple news reader which shows WordPress posts, nothing fancy, not using a BLOC, inherited Widget, Firebase.
I want it to show the cached data(which is the latest 10 posts) even when the user is offline.
So if the user is offline show Cached data; or somehow default data is cached data.
get the firstPost[Id] from WP REST API
If the cached Json file contains Post[id] then show cached data;
Else getPosts(); and show loading indicator. also please update the local JSON file.
code to get JSON data:
// Function to fetch list of posts
Future<String> getPosts() async {
var res = await http
.get(Uri.encodeFull(apiUrl + "posts?_embed&per_page=10"), //TODO make it unlimited
headers: {"Accept": "application/json"});
setState(() {
var resBody = json.decode(res.body);
posts = resBody;
});
return "Success!";
}
the future to get posts and shows loading indicator :
body: FutureBuilder<List<String>>(
future: getPosts(),
builder: (context, snapshot) {
if (snapshot.hasError) print(snapshot.error);
return snapshot.hasData
? ListViewPosts(posts: snapshot.data)
: Center(child: CircularProgressIndicator());
},
),
dart
flutter dart
flutter asked Nov 24 '18 at 15:31
HooshyarHooshyar
183
asked Nov 24 '18 at 15:31
HooshyarHooshyar
183
asked Nov 24 '18 at 15:31
HooshyarHooshyar
183
asked Nov 24 '18 at 15:31
HooshyarHooshyar
183
asked Nov 24 '18 at 15:31
HooshyarHooshyar
183
183
LruMapmaybe?
– pskink
Nov 24 '18 at 19:55
I know you stated NO FIREBASE in the question, but you know that it already provides that, right? You could fetch the posts, save it in the firebase database, and offline use will be available. (tbc)
– Feu
Nov 25 '18 at 12:47
I have made this search and found some interesting packages. This one looks like it's exactly what you looking for, and this one would be maybe something more appropriate to a mobile environment if you have large objects.
– Feu
Nov 25 '18 at 12:49
add a comment |
LruMapmaybe?
– pskink
Nov 24 '18 at 19:55
I know you stated NO FIREBASE in the question, but you know that it already provides that, right? You could fetch the posts, save it in the firebase database, and offline use will be available. (tbc)
– Feu
Nov 25 '18 at 12:47
I have made this search and found some interesting packages. This one looks like it's exactly what you looking for, and this one would be maybe something more appropriate to a mobile environment if you have large objects.
– Feu
Nov 25 '18 at 12:49
LruMap maybe?– pskink
Nov 24 '18 at 19:55
LruMap maybe?– pskink
Nov 24 '18 at 19:55
I know you stated NO FIREBASE in the question, but you know that it already provides that, right? You could fetch the posts, save it in the firebase database, and offline use will be available. (tbc)
– Feu
Nov 25 '18 at 12:47
I know you stated NO FIREBASE in the question, but you know that it already provides that, right? You could fetch the posts, save it in the firebase database, and offline use will be available. (tbc)
– Feu
Nov 25 '18 at 12:47
I have made this search and found some interesting packages. This one looks like it's exactly what you looking for, and this one would be maybe something more appropriate to a mobile environment if you have large objects.
– Feu
Nov 25 '18 at 12:49
I have made this search and found some interesting packages. This one looks like it's exactly what you looking for, and this one would be maybe something more appropriate to a mobile environment if you have large objects.
– Feu
Nov 25 '18 at 12:49
add a comment |
1 Answer
1
active
oldest
votes
I don't think this is the Best way but it works.
every time app starts it shows the latest cached posts to the user if exist.
then it checks if new posts available, if found then it will delete the DB, and create a new one with new data.
answered Dec 13 '18 at 8:20
HooshyarHooshyar
183
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
I don't think this is the Best way but it works.
every time app starts it shows the latest cached posts to the user if exist.
then it checks if new posts available, if found then it will delete the DB, and create a new one with new data.
answered Dec 13 '18 at 8:20
HooshyarHooshyar
183
add a comment |
I don't think this is the Best way but it works.
every time app starts it shows the latest cached posts to the user if exist.
then it checks if new posts available, if found then it will delete the DB, and create a new one with new data.
answered Dec 13 '18 at 8:20
HooshyarHooshyar
183
add a comment |
I don't think this is the Best way but it works.
every time app starts it shows the latest cached posts to the user if exist.
then it checks if new posts available, if found then it will delete the DB, and create a new one with new data.
answered Dec 13 '18 at 8:20
HooshyarHooshyar
183
I don't think this is the Best way but it works.
every time app starts it shows the latest cached posts to the user if exist.
then it checks if new posts available, if found then it will delete the DB, and create a new one with new data.
answered Dec 13 '18 at 8:20
HooshyarHooshyar
183
answered Dec 13 '18 at 8:20
HooshyarHooshyar
183
answered Dec 13 '18 at 8:20
HooshyarHooshyar
183
answered Dec 13 '18 at 8:20
HooshyarHooshyar
183
183
add a comment |
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LruMapmaybe?– pskink
Nov 24 '18 at 19:55
I know you stated NO FIREBASE in the question, but you know that it already provides that, right? You could fetch the posts, save it in the firebase database, and offline use will be available. (tbc)
– Feu
Nov 25 '18 at 12:47
I have made this search and found some interesting packages. This one looks like it's exactly what you looking for, and this one would be maybe something more appropriate to a mobile environment if you have large objects.
– Feu
Nov 25 '18 at 12:49