iPhone上实现Default.png动画

原理： 添加一张和Default.png一样的图片，对这个图片进行动画，从而实现Default动画的渐变消失的效果。 操作： 在- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions中添加如下代码： // Make this interesting. UIImageView *splashView = [[UIImageView alloc] initWithFrame:CGRectMake(0,0, 320, 480)]; splashView.image = [UIImage imageNamed:@"Default.png"]; [self.window addSubview:splashView]; [self.window bringSubviewToFront:splashView]; [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:2.0]; [UIView setAnimationTransition:UIViewAnimationTransitionNone forView: self.window cache:YES]; [UIView setAnimationDelegate:self]; [UIView setAnimationDidStopSelector:@selector(startupAnimationDone:finished:context:)]; splashView.alpha = 0.0; splashView.frame = CGRectMake(-60, -85, 440, 635); [UIView commitAnimations]; 就ok了