UIView动画

//在windows上显示

    UIWindow *window = [UIApplication sharedApplication].keyWindow;

     [window addSubview:self.DiningDetailView];

     self.DiningDetailView.alpha = 0;

     

     // 3.执行动画

     [UIView animateWithDuration:1 animations:^{

         // 3.1.阴影慢慢显示出来

         self.DiningDetailView.alpha = 1;

         self.DiningDetailView.hidden = NO;

       }];

//在windows上隐藏

  self.DiningDetailView.alpha = 1;

        // 3.执行动画

        [UIView animateWithDuration:1 animations:^{

            // 3.1.阴影慢慢显示出来

            self.DiningDetailView.alpha = 0;

           

        } completion:^(BOOL finished) {

             [self.DiningDetailView removeFromSuperview];

             [self.DiningDetailView setHidden:YES];

        }];