EditText don't show keyboard

Hi, i have a problem like one editext box on activity.

This edittext box is in layout ( make in designer mode). This Layout is in TabHost.

When i click on this Edittext box , the EditText don't show keyboard ??
To show the keybord, i do a long clic on the edittext box. The options of keyboard appeared then i close this popup to return to the activity. So , when i click on my editText box, the keyboard Appeared !!!??

Any solution ?

Thancks

(I hope you understand my Query, sorry form my bad English)

Can you please upload a small project that demonstrates this problem?

Sorry, i can't....

Make sure you did not accidently set the TextBox input type to none.

My textbox is not in Input type " none"...