How to avoid data reload on android device back button
I am using android tab based application with TabGroupActivity, the application have a ListActivity "A" which drills down to a detail activity "D", on detail activity when i click device back button it navigate back to ListActivtiy "A" and relaods the data (ProgressBar shows progress on back button).  
How can i avoid reloading of data on back buttuon ?  
Any help would be appreciated.
How to avoid data reload on android device back button
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I am using android tab based application with TabGroupActivity, the application have a ListActivity "A" which drills down to a detail activity "D", on detail activity when i click device back button it navigate back to ListActivtiy "A" and relaods the data (ProgressBar shows progress on back button).  
How can i avoid reloading of data on back buttuon ?  
Any help would be appreciated.