Edittext, on submit need to show on another window in android

In android,i want to get a string from user using EditText and on click of submit button the string need to be show on another page/pane.

here is my fragment.xml

<LinearLayout xmlns:android="http://ift.tt/nIICcg"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"   
>
<EditText android:id="@+id/msg"
    android:hint="@string/entertheip"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/text"
    />

<Button android:id="@+id/button1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/Button1"
    />
<TextView android:id="@+id/tv"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/thetext"
    android:visibility="invisible"
    />
</LinearLayout>

and corresponding java class is this

public class MainActivity extends ActionBarActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.fragment_main);

    Button bu = (Button)findViewById(R.id.button1);
    bu.setOnClickListener(new View.OnClickListener() {

        private TextView tv = (TextView)findViewById(R.id.tv);

        @Override
        public void onClick(View v) {
            // to view the ip in another page
            try{
                EditText et = (EditText)findViewById(R.id.msg);
                String t = et.getText().toString();
                tv.setText(t);

            }catch(NullPointerException e){
                e.printStackTrace();
            }
        }
    });




}   

}

But i am getting the Edit Text and Button only, the text is not showing in another page. Kindly help in this.