self.window.rootViewController.view.alpha = ;

     UIImageView *splashImageView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"Defauit_o"]];

     splashImageView.frame=CGRectMake(, , ScreenWidth, ScreenHeight);

     [self.window addSubview:splashImageView];

     [UIView animateWithDuration:1.7 animations:^{

         self.window.rootViewController.view.alpha = 1.0;

     } completion:^(BOOL finished) {

         [splashImageView removeFromSuperview];

     }];