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search through web-service with json

In my android application im using web-service to get information about food the problem that if i write appl instead of apple,row,skin it dosent fill automatically and an error message will be shown,, what i did i stored 2000 name from web service in sqlite and search through them is it wrong to do this ? and how can i search with misspelling in web-service without the error message ?
The api url http://api.nal.usda.gov/ndb/search/?format=json&q=apple&sort=n&max=25&offset=0&api_key=DEMO_KEY

Salam Enas,
If the data do change frequently (like a movies list) then it's not ok to store it in the sqlite and it's better to be stored in the server database.
If the data does not change frequently, then it's ok to store them on the sqlite database although the app size will increase by 2 Mb which is a drawback.
You may also want to consider other APIs if you are not committed to use this one.
When storing data on the server, HTTP requests burden can be alleviated by caching data on the mobile.
good luck :)

How can I create a sqlite database file to be returned by a webservice

I want to create a sqlite database file in a web service, so I dont have to read a json in the android device and wait for it to read the json, convert it to an object and then insert it to the database.
When the json is huge, with a lot of data, that process its to long for be waiting in an android device.
I would like to generate the database file of sqlite in the webservice, so that, instead of returning the json, it returns the sqlite database, and in android, I just need to save the database, so that, it is ready to use.
That would save a lot of time!

SQLite have libraries for almost any kind of server side language.
SQLite db is just a file so after is created you shall compress is in a zip and use volley library to dl the file over http.
Decompress the zip and connect to it.
I have no idea about which kind of data and which amount you need to transfer but if the data is organised properly the processing should be so long. Also you have to take in consideration that using JSON you can "ask" to receive only updates (delta) and this is something that is not possible if you download all the db each time.
Update: for this kind a data I would go to a different approach. Use docs from google publishing api to upload every specific period of time the db in an extension pack for your app. so most of the dl'ing process is even before the "install" on the device itself. When the app is first running will contact your server and get the latest updates since the db was created (I suppose that even that is a week you are talking about less than a hundred rows)...

Android data best practices

I am building an Android app that that involves taking pictures and adding text to it. In other apps I have built I have been storing the data locally as JSON data. I read that you should always save locally(JSON) at every step because you can never be sure when an activity will be stop.
In the app I am currently building I want to upload the data to a SQL database. For example want to take a picture, save it locally and edit it(while saving at every edit), and then upload it to server. Then I would want to display a list that accesses the database to display finished photos.
Can I continue to save things with JSON and then only upload certain things to the database or should I skip JSON and just go directly to database?
Is there any built in methods for sending JSON data to a SQL database? Just trying to figure out the best way to go about this. Any advice would be appreciated.

I would not store the data as JSON because you might need later to query the data or filter it which will be cumbersome to do it with JSON.
What I suggest that you store your data in sqlite (the text only) and then when you are about to send to the server you can serialize it as JSON.
There is no special method to send JSON data, it is just normal plain text over HTTP.
As general rule, data storage should be in a database and then you can use JSON (or XML) to exchange the data (e.g. sync it with the server)
Also, if you are sending large amount of data, consider compressing it before sending to the server

Updating a SQL database on an Android app with data from an SQL database on a server

I need some help, my app created a database on creation at the minute.
What I want is to get the information in a database on a server or PC and load it into my app.
It just needs to be from server to app, not back again.
I have no idea how I would do this, does anyone have any ideas?

first, I should say that your question is so wide. It contains alot of technologies.
So, I'll give you a breif walk through here. you should figure out the rest on your own. and then, you can come back and ask more specific questions.
That said, here is the path you should take:
On the server, implement a REST API that respond to the caller with the data in the server database.
example: http://your.server.com/api/somedata
calling this url with GET method should return the data you want in JSON format.
from your android application, call this url and save the response in a String.
parse the JSON String ( you can use gson ).
save the parsed data to your local database.
If you are the one developing the server api, then this book is a recommended reading:
RESTful Web Services
Update
Say you have a table in your server database called (TABLE) with the columns COL_1, COL_2, COL_3.
You could implement a php page called 'TABLE.php' that return the following:
{
"items": [
{"COL_1": "value_1", "COL_2": "value_2", "COL_3": "value_3"},
{"COL_1": "value_2", "COL_2": "value_3", "COL_3": "value_4"},
{"COL_1": "value_4", "COL_2": "value_5", "COL_3": "value_6"},
...
]
}
In your android application call http://your.server.com/api/TABLE.php page with GET method, parse the JSON returned (above) and save it to your local database.
You can do this for each database table on your server, until you have all your data saved locally in your android application.
This probably wont be the best design decision, but considering your knowledge about the topics, this could be a fair starting point.

Using HttpClient you can set things up to execute a POST to some servlet or similar app on the server. That app needs to then send data back to your Android app which is waiting for a response from the server. Then your app can parse the data and stuff it's own database.

How to achieve pagination?

I am dealing with huge data (downloading from webserver to client/phone). Currently I am trying to parse and load complete data into sqlite database when the application launches.
This is taking a lot of time. I want to load the data based on the screen navigation.
How do I achieve that?

You'll want to pass information between your server and the device as XML.
This way the device can request URLs for specific information such as example.com/news/latest (return headlines of the latest 20 news articles), example.com/news/americas (the latest 20 article headlines from the Americas) or example.com/news/article/177309/ (one full article).
The server can then query its database for the needed information based on the query and output it for the client as XML. The client can parse the XML and add the data to it's local SQLiteDatabase.

Is this not restricting the dataset returned from the source first, then downloading it onto the client device?

If you are looking for performance boost up , i prefer running an async task in which the data gets uploaded or downloaded to the server. Its similar to threads but much better.