Save JSON from url for local development

Question

I have an android app that downloads json data from a url, parses and then displays it. Unfortunately, I will be away from internet for awhile, but would like to continue to work on the app.

Is there a way that I can save that data for offline use?

Essentially, is there a way I can hard code a JSONObject to use the data found at link

So that I will have it locally?

Try Sqlite it is right option of storing Jsonobject & increase performance of Your App. — Dixit Patel, Jan 06 '13 at 07:16
You can get the json data then save it internally in a database or a persistent file then read from file for now — dchhetri, Jan 06 '13 at 07:17
Or just copy and hardcode it, nothing wrong with that for testing use — dchhetri, Jan 06 '13 at 07:17
u can store your json string on sdcard and read it as json object for off-line use — ρяσѕρєя K, Jan 06 '13 at 07:20

Paritosh · Answer 1 · 2014-07-18T10:30:11.990

You have following options:

use RoboSpice library
use android volley library

Both above libraries have caching capability. Conditionally you can invalidate cache to retrieve updated data.

Use shared preferences to store JSON string and update that as and when required.

To store data:

SharedPreferences settings = getApplicationContext().getSharedPreferences("PREF_NAME", MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
editor.putString("strJSON", "" + strJSONfromServer);
editor.commit();

To retrieve data :

SharedPreferences settings = getApplicationContext().getSharedPreferences("PREF_NAME", MODE_PRIVATE);
String strData = settings.getString("strJSON", "");

To clear data :

SharedPreferences settings = getApplicationContext().getSharedPreferences("strJSON",MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
editor.remove("strJSON");
editor.commit();

score 0 · Answer 2 · edited May 23 '17 at 11:48

if you have http server installed in your machine , you can save that json data as text file, and access it from the device with the url: "http://10.0.2.2:PORT_NUMBER"

another solution, no need for http server, you can save the data as text file and access it from your device, as explained in this answer: Reading a simple text file

Edit: simpler way would be just save the data in a String:

String stringJson = "{\"Baseball\":[{\"Opponent\": ... "

(be aware you will have to escape the characters with \")

to parse the json data, all you need to do is

JSONObject jsonObject = new JSONObject(stringJson);

score 0 · Answer 3 · answered Jan 07 '13 at 12:37

0

Another option in to store your json in file under the assets directory. Then you will be able to acces it like any other file in your application:

http://developer.android.com/reference/android/content/res/AssetManager.html

answered Jan 07 '13 at 12:37

SpdyMx

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Save JSON from url for local development

3 Answers3