Android: Change Screens

Question

Possible Duplicate:
How do I pass data between activities in Android?

My App starts and loads the first screen, then the users changes to the next screen by clicking a button with:

    Intent intent = new Intent(DashboardActivity.this, LoginActivity.class);
            startActivity(intent);

and then from there, the user changes to the next screen, again with:

    Intent intent = new Intent(LoginActivity.this, NextActivity.class);
            startActivity(intent);

now there should be 3 screens on the stack and in this last screen, I want to go all the way back to the first screen, how do I do that with one click? I want to send putExtra("") data from that last screen to the first screen.

Answer 1

You can do this by

Intent intent = new Intent(NextActivity.this, DashboardActivity.class);
// This will remove all activities which are on the top of DashboardActivity
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
intent.putExtra("<Your data will be here>");
startActivity(intent);

Hope this will help you

Answer 2

Add this

In NextActivity,

Intent myIntent = new Intent(NextActivity.this, DashBoardActivity.class);
 intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
  myIntent.putExtra("UserName",UserName);
   startActivity(myIntent);

In DashBoardActivity,

Intent intent = getIntent();
UserName=intent.getStringExtra("UserName");

Answer 3

its very simple , again you have to make one Intent which directs to the first activity and get your data there:

Answer 4

 Intent intent = new Intent(LoginActivity.this, DashboardActivity.class);
 intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
 intent.putExtra("string",strValue);
 startActivity(intent);

Answer 5

Intent intent = new Intent(NextActivity.this, LoginActivity.class);
 intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
   startActivity(intent );

this will clear all the Activities on the Top of current activity from activity Stack.