In EditText typed-text missing

I have an editText , the text typed in ediText is not showing-up until back key is pressed means when am typing it shows nothing.

and my editText is in ScrollView.

Phone am using is of size 240*320 (QVGA).

how to resolve this weird-issue..

*edited:*In scrollView there is a 开发者_运维问答LinearLayout . In LinearLayout having editText

after back press i can see what i typed.

Thanks...