从一项活动到另外两项活动

Question

Is it possible for one Activity to have two others. What I mean is I have 2 buttons for two parent activities - Button 1 and Button 2 . When I click on Button 1 it is opening activity 1 which also has activity 2 . When I click Button 2 it is opening same activity 1 like on Button 1 and here is the catch. I want 3rd activity of button 2 to be different. Currently it opens 3rd activity which is on button 1. I will try to illustrate it

Button 1(Activity 1) -> listView (Activity 2) -> TextView (Activity 3)
Button 2(Activity 1) -> listView (Activity 2) -> TextView (Activity 3) <- this must be different from above activity 3

I use same Activity 2 for both menu buttons and then activity 3 must be different for both. I cansee from where this problem come. Because second activity on button 2 is the second activity on button 1. But I don't want to make another activity and to load same thing and to duplicate code/activities. Or should I? Update:

Button1.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View v) {
        Intent intent = new Intent(MainActivity.this, Menu.class);
        intent.putExtra("button", "button1");
        startActivity(intent);

    }
});
Button2.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View v) {
        Intent intent = new Intent(MainActivity.this, Menu.class);
        intent.putExtra("button", "button2");
        startActivity(intent);

    }
});

Here is activity 3 for button1

    @Override
 protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.act3);

Bundle b = getIntent().getExtras();
if (b != null) {
    String button = b.getString("button"); 
}
}

Here is activity 3 for button2

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.act3_1);

    Bundle b = getIntent().getExtras();
    if (b != null) {
        String button = b.getString("button"); 
    }
}

Answer 1

Use this for button 1 onCLick :

intent.putExtra("button", "button1");

For button 2 onCLick :

intent.putExtra("button", "button2");

Pass that value through from Activity 1 to Activity 3, through Activity 2.

In Activity 3's onCreate , use :

Bundle b = getIntent().getExtras();

if(b != null)
   String btn = b.getString("button"); 

You can use this String to know, whether its from button1 or button2.