在应用程序中单击后退按钮时，如何定义活动？

Question

I am nearly finished with my first Android App, but there is one thing that still bothers me: I have an activity with EditText fields and a "Start"-button that leads to a new Activity. When the user presses the back-button (the one thats on the phone), I get back to my first Activity. Can I change this and define a whole new Activity? A modified version of my first Activity?

Here is what I want to achieve:

First Activity - - > (start-button clicked) - - > Second Activity - - > (back-button clicked) - - > First Activity, modified.

Thanks for any help!

Answer 1

Use startActivityForResult and onActivityResult .

An example of this is here .

You will put your layout manipulation code as it were in the onActivityResult method in your first activity, and start the second activity using startActivityForResult .

Answer 2

override onBackPressed() in your second activity and start your modified activity from there. Something like:

@Override
public void onBackPressed()
{
     //start your activity here
    //make sure you remove the super call
}