I'm new to android sync so I really need ideas to get started. Actually my app's requirement is like this: My app needs to connect to my database online. But my android app can be used offline meaning, the user can add records to a local db, say sqlite. And then when the user connects to the Internet, the app should automatically connect to the server and add the record the user added when he is not online. Can you give me some considerations and ideas on how to do this? I really need your help guys. Thanks.
I will recommend you to go for Sync Adapter. See these links
AbstractThreadedSyncAdapter and Creating Sync Adapter.
I have used them long time ago. I will say that it is the best approach for syncing data between device and server. Usually, email apps use these sync adapters.
Sample is also given there. Download it if you want to go deep inside of "HOW".
Thank You!
You need to run background service like android alarm manager. You need to check that device is connected via internet or not. if device is connected via internet then sync the data to server.
Check this like to the way of data sync
How to sync SQLite database on Android phone with MySQL database on server?
Thanks
Related
I am currently working on a project, this project is about an android application but it is currently on my friend's GitHub and it is currently connected to Firebase. I am not sure how to disconnect the project from Firebase. If someone could help that would be awesome. Please refer to this screenshot for further information:
Firebase Realtime Database is basically a Google program that hosts a database for you. In terms of being connected, generally we would be talking about a client connection to the host (the database). For that to happen you would have to be coding a program to connect to the database.
Are you talking about programmatically disconnecting the database? If not, I don't believe there's actually a connection there. It may just be Firebase telling you that you're on the right track to using the database in your program.
To double check that you aren't connected to the database, go in to your Firebase Console and double check that there isn't any usage happening on the Realtime Database. If there's not, I don't believe there's any connection you need to worry about.
Personally I've worked with Firebase before and used it in programs, and I've never come across a time when Firebase was anything other than a library or API for me to use. I doubt you need to worry!
If you're looking to delete the "App" on Firebase's end, you can go in to the Firebase Console and do that manually as well (to do this, you can go into your Apps card in the Firebase Console and select "Remove this app").
Furthermore, to delete the project itself in the Firebase Console, you can go to General Settings and click "Delete project".
I have an Android app that needs to retrieve info from a server that isn't related to the app.
I'll try to be more clear:
There's a server that is being updated every once in a while, and I need the devices to retrieve data from that server. How can I achieve this?
I thought about SQLite but I don't seem to understand how it will connect to an external database that isn't on the device
I have a problem, I build an application for android that can open a single led with the use of bluetooth module and it succesfully works, now my problem is what if I want to open my led in my home while im at my office. What will I do is I will left another android that can open the led in my office and I will make another android application that will pass a data in my database and that data will retrieve by my android in my office and will trigger to open the LED.. I need tips on how I will gonna do that.. thanks
What you can do is have a realtime database like Firebase Realtime Database to store your data you need to communicate. So when a data is changed or updated your Phones will have the fresh data in sync. and then you can trigger changes accordingly
For eg, if the device in your office, clicks (Turn On LED), it will update the Firebase database with a value like (true), on the other side the device at your home would read the value, and check if the value is (true), then run the code to turn on the LED
I'm Working in an Android project that generates data and then it registers that connecting to a WebService, the data can be created even if the user doesn't have an active internet connection in that moment. So, I want a way to run a function that calls the webservice and pass the data when a valid internet connection is detected, all in background. I have read about SyncAdapter and JobScheduler, but I'm very confused about these options because I'm very new in Android development, any help or suggestion to decide which option is better to accomplish this would be very appreciated, thanks in after hand.
You should use broadcast receiver. By that way you can check internet connection in a broadcast receiver and then do some stuff in background.
this is a good tut to how use it.
Theme : Newspaper updates in android application.
How to fetch or retrieve data from server and post updates on android application . How to manage offline storage means whenever there is no internet connection how the data gone be updated on android application , atleast how it consider showing updates on android application . If any one known this issue please answer about it .
I am actually using php or json as intermediate files for fetching data from server and send updates to android application but its seems to be more complex and if i wont get the permission to access the server side files , how do i manage for updates ? whether is it necessary to have permission to access the server files ?
More about the topics : if i want to syncronise the update with website , how do i handle it or implement it ? i am not asking any sort of coding here .
How to fetch or retrieve data from server and post updates on android application
use HTTPClient.
How to manage offline storage means whenever there is no internet connection how the data gone be updated on android application
I think you don't understand what offline storage means. If there is no internet connection, that's it. You are not able to update your content. Offline storage is useful if you have internet connection, but not everytime. The content you downloaded when you had internet connection can be saved to SQLLite to be loaded when you don't have internet connection.
I am actually using php or json as intermediate files for fetching data from server and send updates to android application but its seems to be more complex and if i wont get the permission to access the server side files , how do i manage for updates ? whether is it necessary to have permission to access the server files ?
Create WebService as an interface. Do not let other system to be able to directly access your files. Or just create a PHP files that basically return Json or XML Data.
Other option : create an RSS.
More about the topics : if i want to syncronise the update with website , how do i handle it or implement it ? i am not asking any sort of coding here .
Create an event to start sync using HTTPClient. If there is new update, save it to SQLLite(for offline storage) and display the content. The event can be triggered during the start of your application or clicking refresh button and if Internet exist.
Update :
There is a new framework called couchbase mobile. You can sync the local mobile db from a couch server. You can insert/update the data locally(offline mode) and then the data can be synced also to the couch server, whenever you have internet connection. This means the need to create HTTPClient is no longer necessary.
For the database, try cloudant.