How do I get old activity window

Issue

I will explain my problem on basic case. Assume I have 2 activities, A and B. They have 1 EditText and 1 Button both. Buttons are for navigate between activities. EditTexts are for holding the data. Assume EditTexts are filled in both activities, but when I click to any of the button, I don't want to lose data of EditTexts. I have method onClickListener() for buttons;

for button in A:

Intent intent=new Intent(A.this, B.class);
startActivity(intent);

for button in B:

Intent intent=new Intent(B.this, A.class);
startActivity(intent);

But when I click buttons, EditTexts texts are disappearing. I need help for keeping the data. Thanks in advance for all replies.

Solution

If you just want to flip back and forth between the 2 activities, you can do the following:

When you want to go from A to B, do this:

Intent intent=new Intent(A.this, B.class);
intent.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
startActivity(intent);

This will take an existing instance of B and rearrange it so that it is now on top of the task stack (ie: shown to the user). The existing instance of A is now underneath it.

In B, to go to A, modify the code with the same additional line to add the REORDER_TO_FRONT flag.

Keeping data in EditText is not a good or robust "persistency" solution, but for simple applications it can certainly be used for that.

Answered By - David Wasser