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Android data sharing between activities 

freyo
Joined:
07/27/2010
Posts:
128

July 27, 2011 13:49:26    Last update: July 27, 2011 13:52:03
Some ways to pass data from one activity to another:
  1. Add data to the Intent:
    • The sending side: 
      // create Intent
Intent intent = new Intent();
intent.setAction("the-action");
intent.setData(Uri.parse("a-valid-uri-for-the-second-activity"));

// add data
intent.putExtra("key", "value");

// start the second activity
startActivity(intent);

    • The receiving side: 
      Bundle bundle = getIntent().getExtras();
String value = bundle.getString("key");


  2. Use SharedPreferences (data is persisted in this case):
    • The sending side: 
      SharedPreferences prefs = getSharedPreferences("prefID", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = prefs.edit();
editor.purString("key", "value");
editor.commit();

    • The receiving side: 
      SharedPreferences prefs = getSharedPreferences("prefID", Context.MODE_PRIVATE);
String value = prefs.getString("key");


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