[android-developers] back button in Tabactivity going to previous activity rather than dismissing the soft keyboard

HI friends,

Under my tabactivity in the activity group ,i have an edittext , when i touch on it the soft  keyboard appears,but when i press back button, the keyboard dismisses but it goes to the previous activity.It is happening in HTC mobile,in emulator it works fine.

How to resolve this?
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Regards,
Vani Reddy

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