优化PhoneGAP的Splashscreen 类

- (void) __show:(BOOL)show {     // Legacy support - once deprecated classes removed, clean this up     id<UIApplicationDelegate> delegate = [[UIApplication sharedApplication] delegate];          if ([delegate respondsToSelector:@selector(viewController)]) {         id vc = [delegate performSelector:@selector(viewController)];         if ([vc isKindOfClass:[CDVViewController class]]) {             [UIView beginAnimations:nil context:nil];             [UIView setAnimationDuration:0.9];             [UIView setAnimationTransition:UIViewAnimationTransitionNone forView:((CDVViewController*)vc).view cache:YES];             [UIView setAnimationDelegate:((CDVViewController*)vc)]; 　　　　　　　// 动画结束后执行隐藏操作             [UIView setAnimationDidStopSelector:@selector(showAnimationDone:vc:show:finished:context:)];             ((CDVViewController*)vc).p_w_picpathView.alpha = 0.0;//让Splashscreen 的填充图片的透明度渐渐变为0;             ((CDVViewController*)vc).activityView.alpha = 0.0; //让Splashscreen 的活动视图的透明度渐渐变为0;             [UIView commitAnimations];         }     } }  //动画结束后隐藏Splashscreen - (void) showAnimationDone:(id*)viewController showOrhide:(BOOL)show animationID:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context {     ((CDVViewController*)viewController).p_w_picpathView.hidden = !show;     ((CDVViewController*)viewController).activityView.hidden = !show; }