Passing data between activities in Android(BIG JSON DATA STRING)

Question

How can I pass an big json-string between activities fast?

a) My Activity one look like this.

JsonDataTask jdt = new JsonDataTask(c);

AsyncTask<String, Integer, String> rdataJSON = jdt.execute("https://job.jobnet.dk/FindJobService/V1/Gateway.ashx/annonce?fritekst=akutjob&sortering=match");

try {   
   Intent i = new Intent(c, JoblistActivity.class);
   i.putExtra("rdataJSON", rdataJSON.get());
   startActivity(i);
} catch (InterruptedException e1) {
   e1.printStackTrace();
} catch (ExecutionException e1) {
   e1.printStackTrace();
}

b) Then Activity two below.

Intent intent = getIntent();
JobPosting_json = intent.getStringExtra("rdataJSON");

The problem is where the 'jdt.execute()' a.k.a json-string return too must data.. Then the 'getStringExtra("rdataJSON")' can´t holde the hule string..

kumar_android · Accepted Answer · 2012-11-30 13:43:37Z

1

You want to use Parcelable class to one activity to another, Refer http://developer.android.com/reference/android/os/Parcelable.html

answered Nov 30, 2012 at 13:43

kumar_android

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1 Comment

Pavel Shorokhov Over a year ago

It is not good approach for big data. Parcelable allow to pass data no more than 1mb, but on some platforms no more than 512kb. It is not so many. If you trying to pass more than possible, your application will crash with TransactionTooLarge exception.

Romain Piel · Accepted Answer · 2012-11-30 13:44:17Z

0

So two solutions:

or you cache the data in your first activity then get it in the second
or you do the request in the second activity

I usually go for the second option but it all depends on your requirements.

answered Nov 30, 2012 at 13:44

Romain Piel

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3 Comments

Voidcode Over a year ago

hmm if I use 2 option then the 'ProgressDialog' in the 'AsyncTask'-class do not show before swith to activity to.

Romain Piel Over a year ago

well you can start the activity which start an asynctask with its progress dialog

Voidcode Over a year ago

Ok I just use option one, for this.. :)

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