Not sure what setText should write

In my claims.xml, I have 2 + button and they used to open the radio button dialog. The textView in these two button are used to get the user input from other activities by using startActivityForResult().

claims.xml

 <RelativeLayout ....>

       <Button
            android:id="@+id/button10"
            android:layout_width="41dp"
            android:layout_height="40dp"
            android:background="#454545"
            android:text="+"
            android:textColor="#FFFFFF"
            android:textSize="30sp"
            android:layout_alignParentTop="true"
            android:layout_alignParentRight="true"
            android:layout_alignParentEnd="true" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="New Text"
            android:id="@+id/textView49"
            android:layout_alignParentTop="true"
            android:layout_alignParentBottom="true"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:layout_toLeftOf="@+id/button10"
            android:layout_toStartOf="@+id/button10" />

    </RelativeLayout>

 <RelativeLayout...>

        <Button
            android:id="@+id/button9"
            android:layout_width="41dp"
            android:layout_height="40dp"
            android:background="#454545"
            android:text="+"
            android:textColor="#FFFFFF"
            android:textSize="30sp"
            android:layout_alignParentTop="true"
            android:layout_alignParentRight="true"
            android:layout_alignParentEnd="true" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="New Text"
            android:id="@+id/textView51"
            android:layout_alignParentTop="true"
            android:layout_alignParentBottom="true"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:layout_toLeftOf="@+id/button9"
            android:layout_toStartOf="@+id/button9" />
    </RelativeLayout>

Below is my code for Claims.java

Claims.java

   Button button1 = (Button) claims.findViewById(R.id.button10);
   Button button = (Button) claims.findViewById(R.id.button9);

  button1.setOnClickListener(listener);
  button.setOnClickListener(listener);

    c=(TextView)claims.findViewById(R.id.textView49);
    d=(TextView)claims.findViewById(R.id.textView51);

  View.OnClickListener listener = new View.OnClickListener() {
            public void onClick(View v) {
                AlertDialogRadio();

            }
        };

  public void AlertDialogRadio() {
        final CharSequence[] ClaimsModel = {"Project", "Petrol", "Car };

        AlertDialog.Builder alt_bld = new AlertDialog.Builder(getActivity());
        alt_bld.setTitle("Select a Claims");
        alt_bld.setSingleChoiceItems(ClaimsModel, -1, new DialogInterface
                .OnClickListener() {
            public void onClick(DialogInterface dialog, int item) {
                if (item == 0) {
                    Intent intent = new Intent(getActivity().getApplicationContext(), Project1.class);
                    startActivityForResult(intent, 0);
                } else if (item == 1) {
                    Intent intent = new Intent(getActivity().getApplicationContext(), Petrol.class);
                    startActivityForResult(intent, 1);
                } else if (item == 2) {
                    Intent intent = new Intent(getActivity().getApplicationContext(), CarMainten.class);
                    startActivityForResult(intent, 2);
                }
                }
                dialog.dismiss();

            }
        });
        AlertDialog alert = alt_bld.create();
        alert.show();

    }

Assume the user select Petrol on the first + button then follow by Project.

In Petrol.java, it has an editText for user to key in the amount, and a save button. Once the same button get clicked, returnIntent.putExtra("text", text); will be called and back to Claims.java

Same as Project.java,it has an editText for user to key in the amount, and a save button.

Continue in Claims.java....

    @Override
        public void onActivityResult(int requestCode, int resultCode, Intent data) {
        switch(requestCode)
        {
            case 0:
                String result = data.getStringExtra("text");
                c.setText( "RM " + result); 
                break;

            case 1:
                String result1=data.getStringExtra("text");
                c.setText( "RM " + result1);
                break;


            case 2:
                String result2 = data.getStringExtra("text");
                c.setText("RM " + result2);
                break;

         }
}

The things that confused me is that I don't know how to write the setText. I came out with a concept, if button1 get clicked, go to selected page, then c.setText(result) and if button get clicked, go to selected page, then d.setText(result). But where can I put the if-else statement? Anyone can help me or have an idea ? Thanks and sorry for my poor English.