I wanted to make an android app where data will retrieve and users can saved those data so that they can read it offline.I know how to retrieve data from mysql but no idea how to add save option for offline use.
Thanks
Solution:-
You will prefer the various options for storing data :-
Intent
SharedPreference
SQLite
Content Provides
Refer this link also:-http://www.androidinterview.com/how-many-ways-data-stored-in-android/
you can store data in SQLite database for offline purpose.
First fetch all data from server and saved to local database for local database use SQLite.
In offline mode, if you made change in local db then once internet connection available send that data to server.
So SQLite is best way to handle app in offline mode.
Related
I'm new to MySQL database and past week I was trying to understand sending and receiving data from android app to MySQL database. what I'm confused about and tried to find it by google or stackOverFlow or even youtube is that what is the best way to save android app user setting (like leveling up feature for specific user)to MySQL database. I can do it easily by shared preference if I had plan to do it locally but I need to save it to online database, so can I save SharedPreferences to MySQL?. what is the best way ?
If you need to store data online either use a given service or build your own API by implementing a backend you can then communicate with e.g. by https://github.com/square/retrofit with https://github.com/square/okhttp. You could have an API call which you just pass your SharedPreferences as JSON data and store it in a MySQL text type. But of course building your own API for just storing some preferences might be too much effort.
Recently I stored data on firebase by converting excel file data into .json and then importing it into firebase database. I don't know how I should proceed with below problem-
How to store data in Sqlite such that it checks firebase only if new data is available. For example- when new user opens the app, it fetches the data and stores all data in sqlite database. When he opens app again, it checks in splash screen if same data is available on firebase, then it won't store in sqlite. If some new data available, append to Sqlite. How should I proceed with this? If any other best way also commment.
If my approach is right. Can you guide me in using the approach. I m new.
Firebase can persist the data itself locally.
You can enable disk persistence with just one line of code.
FirebaseDatabase.getInstance().setPersistenceEnabled(true);
Do you really need to store the data in another sqlite database?
I have software that connects to an SQL database. I am now working on the software on Android, using SQLite, and need to transfer the SQL database (with the data) to SQLite.
How can I do this?
One way would be to create the SQLite database on the device and download and persist the data into the local SQLite data base. A good place to read up on how to do this is in the Android docs.
Another possible solution would be to create the SQLite database at the server level and download it directly within the Android app then open it. But if you modify anything locally within the app you would need to send data back to the server to keep in sync.
Create Rest API that will fetch my SQL data in JSON format.
Now from android app access that API to get data and insert that data in in your SQLite.
or if you want to fetch it in background process use sync Adapter.
I am android beginner and I am developing a mobile application which fetches the data from MySQL server when connected to internet but I want to fetch the data in offline for that i need to store the data in SqLite when it is loaded from
server.How can I get the data from MySQL and store it in sqlite ,so that whenever I need data it have to fetch from sqlite?
please provide me solution
Thanks in advance
When your application launched first time, fetch the data from the server. It could be in json or xml format. Parse the data and using sqliteopenhelper class store it is local sqlite db. You have to do this on splasscreen. When next time application launch just check whether local data is empty or not. If not fecth data from local db and display it.
I want to be able to store multiple List<NameValuePairs> for when multiple users enter information into my Android application using the same device. Later on, the user should then be able to send their data to the server at a click of a button. But this should only be for later upload for example when there is wifi/network connectivity.
What is the best way to go about storing these List<NameValuePairs>?
Well, your best bet is to store the data in Android's SQLite database:
http://developer.android.com/guide/topics/data/data-storage.html#db
As an alternative you can just serialize your objects to a file, but that might be too much of a hussle if the data is big.
Then you can have a service that runs in the background and sends data from the local db to the server when possible.
Here are your storage options:
http://developer.android.com/guide/topics/data/data-storage.html
I would imagine that depending on the kind of data and size, SharedPreferences or SqlLite could be useful for you. You can back DB with a ContentResolver and implement sync (SyncService) to upload to server. In this case, the Android OS will intelligently sync your data on the cloud when network is reachable.
Decided to save everything as a long string of name value pairs seperated by ampersands for easy upload to database when sending to php server.