Passing values from one Activity to other using Bundle

• In general Bundle is a bunch of things putting together.
• Here, in following example I am going to send the data from one activity(SenderActivity) to other activity (ReceiverActivity) through bundle.
• To start a new activity from existing activity we use Intents (description of an operation to be performed) in Android.
• In this example  , on button click event I am sending bundle of an employee information from SenderActivity to ReceiverActivity( to display the data sent by SenderActivity).

Step-1: Create a button in main.xml

            <Button         

                        android:layout_width="fill_parent"        

                        android:layout_height="wrap_content"        

                        android:id="@+id/button"        

                        android:text="send bundle data"        

            />

Step-2: Add a listener for the button in SenderActivity.

            Button button=(Button)findViewById(R.id.button);

            button.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

        

}

});

• Bundle of information will be send between activities through Intent objects.So, now we need to create an Intent object.

Step-3: Create an Intent object.

           While creating an Intent object specify  ReceiverActivity as the target  passing it to the Intent's constructor.

           Intent intent=new Intent(SenderActivity.this,ReceiverActivity.class);

Step-4: Create  ReceiverActivity in the package.

            public class  ReceiverActivity extends Activity{

    @Override

             public void onCreate(Bundle savedInstanceState) {

             super.onCreate(savedInstanceState);

             setContentView(R.layout.two);

           }

          }

Step-5: Design two.xml layout for  ReceiverActivity to display the bundled information.

• two.xml contains only TextView's to display the employee details.

        <TextView

        android:id="@+id/showName"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="" />

<TextView

        android:id="@+id/showOrg"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="" />

<TextView

        android:id="@+id/showAddr"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="" />

Step-6: Add newly created activity to AndroidManifest.xml

           <activity

                     android:name=". ReceiverActivity " >

            </activity>

Step-7: 

• Create a bundle object inside the intent and send data to the bundle using putExtras(). And now pass the bundle object to intent.

                        Bundle b=new Bundle();

       b.putString("Name", "GVR");

       b.putString("Organisation", "Kclink");

       b.putString("Address", "Hyderabad");

       intent.putExtras(b);

Step-8:

• To launch an activity call startActivity() method and pass intent object to it. Then the intent will generate to start  ReceiverActivity .

          startActivity(intent);

Step-9:

• Now call getIntent.getExtras () from  ReceiverActivity , which will return all extras previously added through putExtras() of the intent that started this activity.

        Bundle bundle=getIntent().getExtras();

        String name=bundle.getString("Name");

        String org=bundle.getString("Organisation");

        String addr=bundle.getString("Address");

Step-10:

• Finally, set these values to the TextView's to display.

        tv1.setText(name);

        tv2.setText(org);

        tv3.setText(addr);