I want to play a movie file or any animation file till the time application not loaded completely.
Is there any simple way to do it?
Depends on what you mean.
The iPhone shows a still image (Default.png) while the application loads, prior to your code getting any control.
Once your code has control, you can use MPMoviePlayer to play a video. You could launch a separate thread to do whatever takes so long that you want to hide it behind a video...