Simple example for Intent and Bundle [duplicate]

Question

I'm new to android with almost no knowledge about Java and XML. I'm learning it through pdfs that i'm getting on net. I have learnt about Toast, a bit about Intents but me not able to understand anything about Bundles. I have understood that they are used to pass data from one activity to another but I'm not able to implement this.

please give a simple example to implement the same.

as for example I have just created two activities namely , Main_Activity and Other_Activity, and i haven't done anything to them yet.

Please give the simplest example so that i can learn to implement.

Thanks in advance!!

Answer 1

For example :

In MainActivity :

Intent intent = new Intent(this, OtherActivity.class); intent.putExtra(OtherActivity.KEY_EXTRA, yourDataObject); startActivity(intent); 

In OtherActivity :

public static final String KEY_EXTRA = "com.example.yourapp.KEY_BOOK";  @Override protected void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);    String yourDataObject = null;    if (getIntent().hasExtra(KEY_EXTRA)) {       yourDataObject = getIntent().getStringExtra(KEY_EXTRA);   } else {       throw new IllegalArgumentException("Activity cannot find  extras " + KEY_EXTRA);   }   // do stuff } 

More informations here : http://developer.android.com/reference/android/content/Intent.html

Answer 2

Try this: if you need pass values between the activities you use this...

This is code for Main_Activity put the values to intent

 String name="aaaa";  Intent intent=new Intent(Main_Activity.this,Other_Activity.class);  intent.putExtra("name", name);  startActivity(intent); 

This code for Other_Activity and get the values form intent

    Bundle b = new Bundle();     b = getIntent().getExtras();     String name = b.getString("name");