How to switch from an activity to another designated one when the device back button is pressed?

Question

I am developing an app that is currently consists of 4 activities. What I want is, while I am for an example, accessing activity number 3, when I press the back button of the device, I want to be directed to activity number 1 and not to the immediate preceding activity. Any suggestions to achieve this?

Answer 1

override it in that one Activity with

@Override
public void onBackPressed()
{
     // code here to show your new activity
     Intent i=new Intent(MainActivity.this,MynextActivity.class);
     startActivity(i);
     super.onBackPressed();  // optional depending on your needs
}

don't put this code in any other Activity

Answer 2

You can intercept android back button event by overriding onBackPressed() method and do whatever you need (For example start Activity1)

Answer 3

Use below code:-

@Override
public void onBackPressed()
{
    startActivity(new Intent(ThisActivity.this, WhereYouGoActivity.class));
    finish();

}

Answer 4

Use this code in activity B

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) 
{
    if(keyCode==KeyEvent.KEYCODE_BACK)
    {
       //use intent to call activity A

    }
    return super.onKeyDown(keyCode, event);

}