Can't Input Chinese in Fedora

omit2

  I installed Fedora Core just a few weeks ago.I'm sure that I installed Chinese font(simplified)during my system installation.Now  my system can display Chinese font,but can't input Chinese. The problem occurred just after I've switched from the English font environment(to Chinese font environment,which is the default environment).
  I just installed the fcitx-2.0.2-3.i386.rpm ,and no error arosed during its installation.And I changed the value of $XMODIFIERS  ,$XIM,$XIM_PROGRAM  in ~/.bashrc as follows:

  export XMODIFIERS="@im=fcitx"
  export XIM=fcitx
  export XIM_PROGRAM=fcitx


But,it doesn't work!!!
I still can't input Chinese now.Please help me!