Question on Tab of the android

I have a Tab with class A and class B,

In class A i have a text and a button, when i add some value in text and press the button
it should display  the value in the activity  b with the tab, instead it displays only class b, not the tab

Any body can find out what is the issue
 
            Button rajset = (Button) findViewById(R.id.setappidButton);
            rajset.setOnClickListener(new OnClickListener() {

              public void onClick (View v) {

        
           Intent i = new Intent(A.this, B.class);
       
                EditText appIdStrVal = (EditText) findViewById(R.id.editText1);
                  String appIdStr = appIdStrVal.getEditableText().toString();
                 Log.d("Application ID", appIdStr + "");
                 i.putExtra("appIdStr", appIdStr);
                 startActivity(i);

In the B class i am having

  EditText appIdStrVal = (EditText) findViewById(R.id.editText1);
                appIdStr = appIdStrVal.getEditableText().toString();
                Log.d("Application ID", appIdStr + "");
          i.putExtra("appIdStr", appIdStr);