Android EditText going to blank when i hide soft input keyboard

Question

I have previously posted

1. EditText in GridView : How to get value from Multiple EditText
2. Android : newView() and bindView() with SimpleCursorAdapter

I got a little bit of success on the second question but I have one more problem like:

My GridView has 1 ImageView, 1 TextView and 3 EditText, when I am pressing the back button for hiding soft input keyboard, I got the blank value of every EditText.

Showing images:

1.First time Viewing GridView:

2.While filling up value of EditText:

3.Click on Next of Soft Input Keyboard, Its displaying QWERT keypad:

4.Cleaning all Edited EditText :

What is the reason behind this??

Please help,

You help would be appreciated...